| Patent Number |
Title Of Patent |
Date Issued |
| 7042617 |
Optical devices having flakes suspended in a host fluid to provide a flake/fluid system providin |
May 9, 2006 |
| Optical devices utilizing flakes (also called platelets) suspended in a host fluid have optical characteristics, such as reflective properties, which are angular dependent in response to an AC field. The reflectivity may be Bragg-like, and the characteristics are obtained through the use |
| 6958215 |
Methods and compositions for inhibition of RNA splicing |
October 25, 2005 |
| A method of inhibiting the self-splicing of a Group I intron is disclosed. The method uses an oligonucleotide having a sequence essentially identical to a guide sequence found in the 5' flanking exon and terminates with a 3' ribonucleoside. Usually the oligonucleotide has N3'.fwdarw.P5' |
| 6927922 |
Imaging using a multifocal aspheric lens to obtain extended depth of field |
August 9, 2005 |
| A system for imaging with a circularly symmetric multifocal aspheric lens is provided for obtaining an extended depth of field. The system includes a camera for capturing an image of at least one object through a circularly symmetric multifocal aspheric lens to provide a blurred image, |
| 6829075 |
Electrically addressable optical devices using a system of composite layered flakes suspended in |
December 7, 2004 |
| Composite or layered flakes having a plurality of layers of different materials, which may be dielectric materials, conductive materials, or liquid crystalline materials suspended in a fluid host and subjected to an electric field, provide optical effects dependent upon the angle or |
| 6730242 |
Glass-forming liquid crystalline compositions and optical devices formed therefrom |
May 4, 2004 |
| A glass-forming liquid crystal composition comprises a compound having a molecular weight in the range of about 1000 to 5000 grams per mole and having the formulawherein CYC is a substituted cycloaliphatic core moiety containing about 24 to about 60 carbon atoms or a substituted aromatic |
| 6665042 |
Electrically switchable polymer liquid crystal and polymer birefringent flake in fluid host syst |
December 16, 2003 |
| Flakes or platelets of polymer liquid crystals (PLC) or other birefringent polymers (BP) suspended in a fluid host medium constitute a system that can function as the active element in an electrically switchable optical device when the suspension is either contained between a pair of rig |
| 6642499 |
System for photometric calibration of optoelectronic imaging devices especially streak cameras |
November 4, 2003 |
| A system for the photometric calibration of streak cameras and similar imaging devices provides a precise knowledge of the camera's flat-field response as well as a mapping of the geometric distortions. The system provides the flat-field response, representing the spatial variations in |
| 6633386 |
Optical pulse measurement using shearing interferometry, especially suitable for characterizing |
October 14, 2003 |
| Pulse measurement for characterization of ultra-short optical pulses using spectral phase interferometry for direct electric field reconstruction (SPIDER) is enhanced by utilizing a plurality of spectral phase differences derived from the pulse and measured and frequency sheared repl |
| 6611336 |
Pulse measurement using frequency shifting techniques |
August 26, 2003 |
| Amplitude and phase relative to an interferometrically established phase of ultrashort replica pulses (15) utilizes spectral phase interforemetry for direct electric field reconstruction by frequency shifting chirp replica pulses (16) of an optical pulse to be measured. The replicas of t |
| 6583932 |
Optical system for diffusing light |
June 24, 2003 |
| An improved optical system is provided for diffusing light uniformly over a wide angle, including, a diffractive element for diffracting light received by the system in multiple diffraction orders, and a diffusing element which diffuses the diffracted light. The diffractive element p |
| 6366127 |
Digital CMOS voltage interface circuits |
April 2, 2002 |
| CMOS voltage interface circuits have low power consumption, and minimal delays and power dissipation for the driving strength of the output. The circuits use a interface block which is operative upon the applied input signal, depending upon its state and timing, to generate the output at |
| 6307962 |
Document data compression system which automatically segments documents and generates compressed |
October 23, 2001 |
| Data representing a compressed document, referred to as a smart document, is produced from a document page composed of an array of pixel signals having values representative of gray scale. The system initially subdivides the pixel signals of the document page into a matrix of blocks, |
| 6259561 |
Optical system for diffusing light |
July 10, 2001 |
| An improved optical system is provided for diffusing light uniformly over a wide angle, including, a diffractive element for diffracting light received by the system in multiple diffraction orders, and a diffusing element which diffuses the diffracted light. The diffractive element p |
| 6239866 |
Temporal measurements of ultrashort far infrared electromagnetic pulses |
May 29, 2001 |
| Dithered-edge sampling (DES) enables ultra-wideband measurement of terahertz pulses (far infrared electromagnetic pulses) using photoconductive antennas. The terahertz pulse is sampled by first passing it through a triggered photoconductive attenuator whose fast attenuation edge (lim |
| 6226113 |
Coherence filters and systems utilizing same |
May 1, 2001 |
| Optical filters and filter systems operate in accordance with correlation-induced spectral changes and are applied for spectral line resolution in spectrometry, for optical data processing and for cryptography, as by having prescribed filtering properties in different directions of o |
| 6166590 |
Current mirror and/or divider circuits with dynamic current control which are useful in applicat |
December 26, 2000 |
| Circuit useful as current mirror and/or current divider has a circuit topology containing mirror and reference transistor pairs, respectively provided by MOS P and N type transistors for the up and down mirrors. The mirror transistor in each pair is followed by a buffer transistor which |
| 6163174 |
Digital buffer circuits |
December 19, 2000 |
| CMOS buffer circuits are provided having multiple stages of driving transistors defining a fast "1" data path and a fast "0" data path for transmitting data signals from the input to output of the buffer. Each stage before the last stage in each of the data paths has at least one nul |
| 5920415 |
Transmission of optical signals |
July 6, 1999 |
| A system, method and apparatus for transmission of optical signal in which two laser beams, operating at different frequencies, travel nearly loss-free and shape-invariant within an absorbing medium whereby the nonlinearity of the beams cause an adiabatic interaction of their optical |
| 5917845 |
Devices that produce a super resolved image for use in optical systems |
June 29, 1999 |
| Superresolution elements which provide masks and are integrated into superresolution lenses, and in confocal imaging, optical disk and reprographic systems and laser pattern generation systems. The elements are phase-only elements, where the phase transmittance varies across the diam |
| 5854882 |
Halftone correction systems |
December 29, 1998 |
| Halftone correction systems are provided for producing dot overlap corrected halftone images at a digital printer. In the first embodiment, a system is provided for halftone correction on a black-and-white digital printer. The system first calibrates the black-and-white digital printer |
| 5838480 |
Optical scanning system with diffractive optics |
November 17, 1998 |
| An improved optical system having diffractive optic elements is provided for scanning a beam. This optical system includes a laser source for emitting a laser beam along a first path. A deflector, such as a rotating polygonal mirror, intersects the first path and translates the beam into |
| 5756875 |
Thin film phantoms and phantom systems |
May 26, 1998 |
| Phantoms for testing and measuring the performance of ultrasonic imaging systems have regions of precisely controlled scattering or echogenicity which contain sub-resolvable scatterers. The regions are precisely positioned so as to define patterns which form images from which the per |
| 5700786 |
Analogues of adenosine 5'diphosphate and pharmaceutical compositions thereof |
December 23, 1997 |
| This invention provides a compound having the structure: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are same or different, and are hydrogen, hydroxyl, or fluorine; Z is O, CH.sub.2 or CF.sub.2 ; R is chlorine, bromine, iodine, carbonitrile, carboxylic ester, or carboxamide; a |
| 5654771 |
Video compression system using a dense motion vector field and a triangular patch mesh overlay m |
August 5, 1997 |
| In a temporal sequence of digitized image frames of video signals, the spatial and temporal image gradients and the pixel-to-pixel motion vectors (dense motion vectors) are obtained between two consecutive image frames. A shape-adaptive triangular patch mesh model overlay is provided on |
| 5639606 |
Method for quantitative measurement of gene expression using multiplex competitive reverse trans |
June 17, 1997 |
| A method for quantitative measurement of gene expression through multiplex competitive reverse transcriptase polymerase chain reaction amplification is established. This method is especially useful for analysis of small specimens of cells and tissues. |
| 5616066 |
Magnetorheological finishing of edges of optical elements |
April 1, 1997 |
| Method and apparatus using magnetorheological fluid for finishing a non-image-forming edge of an optical element to a very high degree of smoothness and for removing microscopic fissures from such edges, the method comprising positioning an optical element near a continuous carrier s |
| 5569650 |
C-nucleoside isosters of analogs thereof and pharmaceutical compositions |
October 29, 1996 |
| This invention provides a compound having the structure: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are same or different, and are hydrogen, hydroxyl, or fluorine; Z is O, CH.sub.2 or CF.sub.2 ; R is chlorine, bromine, iodine, carbonitrile, carboxylic ester, or carboxamide; a |
| 5540908 |
Detection of hypoxia with reagents containing 2-nitroimidazole compounds and methods of making s |
July 30, 1996 |
| Novel nitroaromatic compounds and immunogenic conjugates comprising a novel nitroaromatic compound and a carrier protein are disclosed. The invention further presents monoclonal antibodies highly specific for the claimed nitroaromatic compounds, the compounds' protein conjugates, the com |
| 5514296 |
Glassy low molar mass chiral nematic liquid crystalline compositions and optical articles formed |
May 7, 1996 |
| A glassy thermotropic chiral nematic liquid crystalline composition comprises a glassy chiral nematic compound of low molar mass that includes a cycloaliphatic radical, a nematogenic moiety, and a chiral moiety, or a mixture of a nematic liquid crystalline compound of low molar mass that |
| 5469267 |
Halftone correction system |
November 21, 1995 |
| Prior to printing on a digital printer a halftone reproduction of a continuous one original image, digital image signals are corrected for the effects of printed dot overlap generated by a particular chosen digital printer. The dot overlap correction is based upon superimposing a virtual |
| 5453844 |
Image data coding and compression system utilizing controlled blurring |
September 26, 1995 |
| Data representing the image of an original picture having high resolution are first acquired. The data are then processed in accordance with a blurring function, which can be a randomly distributed point spread function. Processing can be carried out either in object space or in spat |
| 5446588 |
Wide-angle eyepiece optical system employing refractive and diffractive optical elements |
August 29, 1995 |
| Eyepiece optical systems having arrangements of surfaces where light is refracted or diffracted provide eyepieces with fewer elements and more compact designs than comparable, conventional eyepiece designs. These eyepiece optical systems have three elements each with positive focussing |
| 5419331 |
System for estimating target velocity from pulse echoes in response to their correspondence with |
May 30, 1995 |
| In order to avoid the use of complex transform and correlation techniques for estimating the velocity of a target from which ultrasonic RF bursts are received as return echoes, the time of occurrence of successive returns are compared with a plurality of delay trajectories each repre |
| 5409457 |
Intraretinal delivery and withdrawal instruments |
April 25, 1995 |
| An intraretinal delivery and withdrawal instrument which has (a) a curved, distal frame for insertion into an orbit, which insertion is effected (i) inferior to the supraorbital ridge, (ii) superior to the eye, and (iii) in a caudal direction so as to reach the retina; (b) a tip for pene |
| 5378393 |
Glassy chiral nematic liquid crystalline compositions of low molar mass and optical devices form |
January 3, 1995 |
| A glassy thermotropic chiral nematic liquid crystalline composition comprises a glassy chiral nematic compound of low molar mass that includes a cycloaliphatic radical, a nematogenic moiety, and a chiral moiety, or a mixture of a nematic liquid crystalline compound of low molar mass that |
| 5374940 |
System for operating a plurality of graphics displays from a single computer |
December 20, 1994 |
| Multiple video boards of the general purpose type (e.g. EGA or VGA boards) and their associated monitors are operated by a single computer of the personal computer type, without modification of the computer hardware and while the video boards reside in their usual expansion slots which a |
| 5371570 |
Refractive/diffractive optical system for broad-band through-the-lens imaging of alignment marks |
December 6, 1994 |
| A chromatic aberration-corrected optical system for broad-band through-the-lens (TTL) imaging and position detection of alignment marks deposed on a substrate located at the exposure plane of an exposure apparatus, for example, a stepper machine, uses a first projection lens capable |
| 5360897 |
Immunogenic conjugates of streptococcus pneumonial capsular polymer and toxin or in toxiad |
November 1, 1994 |
| An immunogenic conjugate which is the reductive amination product of an immunogenic capsular polymer fragment having at least one reducing group and derived from a bacterial capsular polymer of a bacterial pathogen, and a bacterial toxin or toxoid. The invention also relates to methods f |
| 5349471 |
Hybrid refractive/diffractive achromatic lens for optical data storage systems |
September 20, 1994 |
| A diffractive/refractive hybrid lens for use in an optical data storage system as an objective is provided by a convex-plano singlet having a refractive element defined by plano-convex surfaces and a diffractive element defined by a Fresnel zone-like pattern on the plano surface which |
| 5339062 |
High power energy transfer system utilizing high temperature superconductors |
August 16, 1994 |
| Electrical energy is transferred or switched by selectively holding off the coupling of a magnetic field to a secondary inductive element (a coil) through a path which contains a high temperature superconductive element (HTS) which is capable of holding off the field when in its supe |
| 5332522 |
Thermotropic chiral nematic liquid crystalline copolymers |
July 26, 1994 |
| A thermotropic chiral nematic liquid crystalline copolymer composition comprises ##STR1## wherein --NEM-- and --NEM'-- are each independently nematogenic units of formula ##STR2## wherein R is H or CH.sub.3, --Q-- is an alkylene radical having 1 to about 8 carbon atoms,-- |
| 5308802 |
Sol-gel process of making glass, particulary gradient-index glass |
May 3, 1994 |
| The present invention relates to a process for making glass by the sol-gel process. A mixture of silicon alkoxide, at least two other metal alkoxides, and alcohol in a solution sufficiently acidic to hydrolyze partially the silicon alkoxide is formed. Water is then added under agitat |
| 5305232 |
Chromatography system |
April 19, 1994 |
| A system (method and apparatus) for optimizing the relationship between resolution and time in chromatograms, especially chromatograms obtained by supercritical fluids (CSF) chromatography. The pressure or temperature or fluid density of the solution caring the material under analysis is |
| 5273530 |
Intraretinal delivery and withdrawal instruments |
December 28, 1993 |
| An intraretinal delivery and withdrawal instrument which has (a) a curved, distal frame for insertion into an orbit, which insertion is effected (i) inferior to the supraorbital ridge, (ii) superior to the eye, and (iii) in a caudal direction so as to reach the retina; (b) a tip for pene |
| 5263039 |
System for generating shaped optical pulses and measuring optical pulses using spectral beam def |
November 16, 1993 |
| A temporally shaped or modified optical output pulse is generated from a bandwidth-encoded optical input pulse in a system in which the input pulse is in the form of a beam which is spectrally spread into components contained within the bandwidth, followed by deflection of the spectrally |
| 5253103 |
Nonlinear optics utilizing composite optical material architectures for providing enhanced nonli |
October 12, 1993 |
| Nonlinear optical systems are provided which exhibit an enhanced nonlinear response to applied optical radiation. These systems are useful for processing radiation by nonlinear optical interactions, for example harmonic generation, mixing (sum and difference frequency generation), pa |
| 5236980 |
Polyazomethine complexes and method for making optical devices and other materials therewith |
August 17, 1993 |
| A novel composition is a solution in an organic solvent of an electron donor-acceptor complex of a conjugated aromatic polyazomethine compound and a Lewis acid compound. This composition is coated on a transparent support and the solvent is evaporated to produce an optical device. De |
| 5220749 |
Grinding apparatus |
June 22, 1993 |
| Apparatus is described for grinding glass to form optical elements, especially prisms. The apparatus has an improved mounting for grinding wheels which are used for different grinding purposes, specifically roughing, finishing and polishing. The finishing wheel is usually an expensiv |
| 5218676 |
Dynamic routing system for a multinode communications network |
June 8, 1993 |
| A communication network having a multiplicity of nodes provides efficient exchange of messages between the nodes. The messages may be originated and received by the computers of a parallel computer system, the processors and associated memories of which are connected to each node. Each n |
| 5139024 |
Resonators for magnetic resonance imaging |
August 18, 1992 |
| Single-turn loop-gap solenoidal resonators for establishing RF fields (B.sub.1) transverse to the static B.sub.0 field of a magnetic resonance imaging system. Tubular forms of dielectric (plastic) material have conductive foil bands attached to their outside walls with one or more ga |
