Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Massachusetts Institute of Technology Patents
Assignee:
Massachusetts Institute of Technology
Address:
Cambridge, MA
No. of patents:
3846
Patents:












Patent Number Title Of Patent Date Issued
RE43661 Nanocrystalline apatites and composites, prostheses incorporating them, and method for their pro September 18, 2012
Methods for synthesis of nanocrystalline apatites are presented, as well as a series of specific reaction parameters that can be adjusted to tailor, in specific ways, properties in the recovered product. Particulate apatite compositions having average crystal size of less than 150 nm
RE43612 Biodegradable poly(.beta.-amino esters) and uses thereof August 28, 2012
Poly(.beta.-amino esters) prepared from the conjugate addition of bis(secondary amines) or primary amines to a bis(acrylate ester) are described. Methods of preparing these polymers from commercially available starting materials are also provided. These tertiary amine-containing poly
RE42903 Electronically controlled prosthetic knee November 8, 2011
The present invention relates to a variable-torque magnetorheologically actuated prosthetic knee which utilizes a plurality of interspersed and alternating rotors and stators to shear magnetorheological fluid in gaps formed therebetween. Advantageously, by operating in the "shear mode"
RE42072 Compositions and methods for enhancing receptor-mediated cellular internalization January 25, 2011
Compositions and methods for improving cellular internalization of one or more compounds are disclosed. The compositions include a compound to be delivered and a biocompatible viscous material, such as a hydrogel, lipogel, or highly viscous sol. The composition also include, or are a
RE42012 Compositions and methods for enhancing receptor-mediated cellular internalization December 28, 2010
Compositions and methods for improving cellular internalization of one or more compounds are disclosed. The compositions include a compound to be delivered and a biocompatible viscous material, such as a hydrogel, lipogel, or highly viscous sol. The composition also include, or are a
RE41584 Nanocrystalline apatites and composites, prostheses incorporating them, and method for their pro August 24, 2010
Methods for synthesis of nanocrystalline apatites are presented, as well as a series of specific reaction parameters that can be adjusted to tailor, in specific ways, properties in the recovered product. Particulate apatite compositions having average crystal size of less than 150 nm
RE41461 Purification, composition and specificity of Heparinase I, II, and III from Flavobacterium hepar July 27, 2010
A single, reproducible scheme to simultaneously purify all three of the heparin lyases from F. heparinum to apparent homogeneity is disclosed herein. The kinetic properties of the heparin lyases have been determined as well as the conditions to optimize their activity and stability.
RE41328 Purification of Heparinase I, II and III from Flavobacterium heparinum May 11, 2010
A purified heparinase I, II and III free of lyase activity and each having a molecular weight of 42,800 84,100, 70,800, respectively, are produced by culturing Flavobacterium heparinum. The kinetic properties of the heparinases have been determined as well as the conditions to optimize
RE40691 Encoding decoding and compression of audio-type data using reference coefficients located within March 31, 2009
An audio type signal is encoded. The signal is first divided into bands. For each band, a yardstick signal element is selected. The yardstick may be the signal element having the largest magnitude in the band, the second largest, closest to the median magnitude, or having some other
RE39196 Nanocrystalline apatites and composites, prostheses incorporating them, and method for their pro July 18, 2006
Methods for synthesis of nanocyrstalline apatites are presented, as well as a series of specific reaction parameters that can be adjusted to tailor, in specific ways, properties in the recovered product. Particulate apatite compositions having aveage crystal size of less than 150 nm
RE37932 Supermicrocellular foamed materials December 10, 2002
A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system
RE37410 Controlled local delivery of chemotherapeutic agents for treating solid tumors October 16, 2001
A method and devices for localized delivery of a chemotherapeutic agent to solid tumors, wherein the agent does not cross the blood-brain barrier and is characterized by poor bioavailability and/or short half-lives in vivo, are described. The devices consist of reservoirs which release d
RE37134 Heat exchanger containing a component capable of discontinuous movement April 17, 2001
Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while
RE37053 Particles incorporating surfactants for pulmonary drug delivery February 13, 2001
Improved aerodynamically light particles for drug delivery to the pulmonary system, and methods for their synthesis and administration are provided. In a preferred embodiment, the aerodynamically light particles are made of a biodegradable material and have a tap density less than 0.4 g/
RE36986 Apparatus and methods for measuring permeability and conductivity in materials using multiple wa December 12, 2000
Devices and analytical techniques are disclosed for measuring spatial profiles of complex permeability and conductivity of a material by multiple wavenumber interrogations. Coil array structures are disclosed which define a number of different fundamental wavelengths (or wavenumbers)
RE36478 Processing of acoustic waveforms December 28, 1999
A sinusoidal model for acoustic waveforms is applied to develop a new analysis/synthesis technique which characterizes a waveform by the amplitudes, frequencies, and phases of component sine waves. These parameters are estimated from a short-time Fourier transform. Rapid changes in t
RE36352 High-efficiency, multilevel, diffractive optical elements October 26, 1999
The method utilizes high resolution lithography, mask aligning, and reactive ion etching. In particular, at least two binary amplitude masks are generated. A photoresist layer on an optical element substrate is exposed through the first mask and then etched. The process is then repea
RE36041 Face recognition system January 12, 1999
A recognition system for identifying members of an audience, the system including an imaging system which generates an image of the audience; a selector module for selecting a portion of the generated image; a detection means which analyzes the selected image portion to determine whe
RE35747 Method for determining tissue of origin and presence and extent of cellular abnormalities March 17, 1998
A biochemical procedure for identification and characterization of cells in a biopsy or sample of a body fluid. The method can be used to determine cell type, i.e. epidermal, neuronal; tissue of origin, i.e. breast tissue, liver tissue; and degree of abnormality. The procedure can also b
RE35068 Collapsible gel compositions October 17, 1995
Ionized crosslinked polyacrylamide gels are provided that are capable of drastic volume changes in response to minor changes in solvent concentration, temperature of pH or salt concentration of the solvent. The gels can contain a metal ion.
RE34812 Coupled-cavity Q-switched laser December 27, 1994
A Q-switched laser having a gain medium disposed within a first cavity and a second cavity whose optical path length is adjustable such that the quality of the first resonant cavity is affected. One aspect of the invention is the changing of the physical path length of the second cavity
RE33865 Detector for three-dimensional optical imaging March 31, 1992
The detector includes a focusing lens for focusing pulsed laser light reflected from an object onto a fiber optic array. The fiber optic array is configured to receive a two-dimensional image from the focusing lens and to convert the two-dimensional image into a line image. A streak
RE32782 Method for determining in vivo, bone strength November 15, 1988
A system for establishing, in vivo, the strength of bone in a live being such as, for example, a horse. The system permits determination of the speed of travel of sound through the bone and the strength of the bone is assessed on the basis of said speed of travel.The questions raised in
RE31287 Asynchronous logic array June 21, 1983
An asynchronous logic array capable of directly implementing Petri net specification of digital systems is disclosed. The array can be used in general synthesis of asynchronous digital circuits and systems. The parallel nature of the array gives the realized systems the speed and oth
RE30384 Solar cell August 26, 1980
An improved solar cell designed for optimum efficiency is comprised of a plurality of series connected unit solar cells formed from a common substrate of semiconductor material. Each unit solar cell has spaced elongate sidewalls, and a "dead space" area between adjoining sidewalls of
RE30383 High-intensity, solid-state-solar cell device August 26, 1980
A semiconductor solar cell capable of converting incident radiation to electrical energy at high efficiency includes a plurality of series-connected unit solar cells formed on a common wafer of semiconductor material. The unit solar cells each include a semiconductor substrate of one
RE30336 Solar-cell array July 15, 1980
The invention contemplates a solar-cell construction wherein plural spaced elongate unit cells of an array are formed from a parallel-grooved single wafer of substrate material of a first conductivity type, with adjacent sidewalls of adjacent units at each inter-unit groove formation. In
RE30131 Generating and using coherent optical radiation October 30, 1979
Optical radiation generation and detection using metal-to-metal diode junctions. Coherent optical radiation is generated by using an antenna connected to a metal-to-metal diode junction with non-linear current-voltage characteristics and by coupling to the junction electromagnetic ra
RE29578 Electron tunneling device March 14, 1978
Tunneling electronic devices responsive to infrared and far infrared radiation are formed by overlapping deposits which define ultra-thin dielectric layers (less than aout 10 Angstrom thickness) between metal layers, and contact areas of the order of 1 micron.sup.2 or less. Preferred
D596084 Motorcycle July 14, 2009
8589084 Detection of ethanol emission from a spark ignition engine operating on gasohols November 19, 2013
Ethanol emissions from a direct ignition spark ignition are measured using mass spectrometry. The method exploits specific fragment ions from ethanol. Ethanol contributes ions of mass number 31, and no other gas species produces ions at this mass number. The method and a device for i
8587106 Wide band and radio frequency waveguide and hybrid integration in a silicon package November 19, 2013
A device includes a device wafer having a circuit component formed thereon and having vias formed therein and a cap wafer bonded to the device wafer. The cap wafer has a cavity therein. The cavity has a post formed therein, and the post is positioned to mechanically support the vias
8587031 Dual-gate normally-off nitride transistors November 19, 2013
A dual-gate normally-off nitride transistor that includes a first gate structure formed between a source electrode and a drain electrode for controlling a normally-off channel region of the dual-gate normally-off nitride transistor. A second gate structure is formed between the first
8586708 Monovalent streptavidin compositions November 19, 2013
The invention relates, in part, to monovalent streptavidin compositions. The invention also relates to methods of preparing and using monovalent streptavidin compositions. In some aspects of the invention, the compositions are monovalent streptavidin with a single femtomolar biotin-b
8586570 Sox-based kinase sensor November 19, 2013
Peptidyl sensors comprise a metal-binding peptide and one or two kinase recognition sequences with a hydroxyamino acid that can be phosphorylated in the presence of a kinase.
8586238 Battery structures, self-organizing structures, and related methods November 19, 2013
An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first m
8585954 Method and apparatus for embossing a deformable body November 19, 2013
A deformable body is embossed using a stamp as a function of a pressure distribution. The pressure distribution is obtained by running a deformation model determined based on convolving a contact pressure distribution with a mechanical response of a surface topography of the deformab
8583291 Methods and apparatus for energy demand management November 12, 2013
To manage energy demands of a plurality of appliances, a meter controller apparatus receives a first message from a first appliance controller apparatus coupled to a first appliance of the plurality of appliances. The first message comprises first information regarding a first power
8581698 Method, apparatus and computer program product for facilitating location discovery November 12, 2013
A method, apparatus and computer program product are provided to permit location discovery, including location discovery in indoor settings. The method may identify a wireless signature present at a geographical location and determine whether the wireless signature corresponds to a p
8581525 Compensated precessional beam extraction for cyclotrons November 12, 2013
A plurality of magnetic extraction bumps are incorporated into a cyclotron that further includes (a) a pair of magnetic coils encircling a central axis and positioned on opposite sides of a median acceleration plane and (b) a magnetic yoke encircling the central axis and including a
8580430 Battery structures, self-organizing structures, and related methods November 12, 2013
An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first m
8580253 Immunomodulating compositions and methods of use November 12, 2013
This invention is directed to .beta.-1-6-glucans, compositions and devices comprising the same, and methods of use thereof in modulating immune responses. The .beta.-1-6-glucans of certain embodiments of the invention are enriched for O-acetylated groups and/or conjugated to a solid
8580100 Metal deposition using seed layers November 12, 2013
Methods of forming a conductive metal layers on substrates are disclosed which employ a seed layer to enhance bonding, especially to smooth, low-roughness or hydrophobic substrates. In one aspect of the invention, the seed layer can be formed by applying nanoparticles onto a surface of
8577997 Global hosting system November 5, 2013
Network architecture supports hosting and content distribution on a global scale. The architecture allows a Content Provider to replicate and serve its most popular content at an unlimited number of points throughout the world. The inventive framework comprises a set of servers opera
8577535 System and method for providing perceived first-order control of an unmanned vehicle November 5, 2013
A system for providing perceived first order control of an unmanned vehicle contains a memory and a processor configured by the memory to perform the steps of: receiving instructions for updating x-axis location, y-axis location, z-axis location, and/or heading of the unmanned vehicl
8574914 Methods for mobile zinc measurement November 5, 2013
This invention relates to a method for using a zinc sensor compound to detect a disease associated with the disruption of zinc homeostasis, such as prostate cancer. The zinc sensor compound comprises an optical reporter having two or more recognition units where each of the recogniti
8574832 Methods for preparing sequencing libraries November 5, 2013
Improvements in chromatin immunoprecipitation-high throughput sequencing techniques has allowed the creation of chromatin maps from limited biological sample sizes that cannot be evaluated using conventional chromatin immunoprecipitation-sequencing protocols. For example, a modified
8574713 Superhydrophobic fibers and methods of preparation and use thereof November 5, 2013
The present invention relates to fibers exhibiting a water contact angle of above 150.degree. and water contact angle hysteresis of below 15.degree., methods of producing the same, and applications thereof. The present invention further relates to superhydrophobic fiber mats, methods
8574704 Liquid-impregnated surfaces, methods of making, and devices incorporating the same November 5, 2013
The invention is directed to an article with a liquid-impregnated surface, the surface having a matrix of features thereupon, spaced sufficiently close to stably contain a liquid therebetween or therewithin, and preferable also a thin film thereupon. The surface provides the article
8571214 Secure network coding for multi-resolution wireless video streaming October 29, 2013
Described herein is a method and system for hierarchical wireless video with network coding which limits encryption operations to a critical set of network coding coefficients in combination with multi-resolution video coding. Such a method and system achieves hierarchical fidelity level

 
 
  Recently Added Patents
(4941
System and method for investing public deposits
Light-emitting diode package and method for manufacturing the same
Image processing device, image forming apparatus, and non-transitory computer readable recording medium
Plural component proportioner
Method for decoding a spatially multiplexed data signal using a maximum likelihood detection
Process for shaping polymeric articles
  Randomly Featured Patents
Vehicle fender
Method of making an intraocular lens with fracture resistant haptics
Resilient mounting of crawler tractor frame
Pipeline analog-to-digital converter with programmable gain function
Apparatus and method of block acknowledgements with reduced recipient state information
Tablet handle and stand
Vessel level sensor mounting structure with positive mechanical lock
Absorbent pant diaper having friction increasing means
Network transport driver interfacing
Method of forming thin film structure with tensile and compressed polysilicon layers