| Patent Number |
Title Of Patent |
Date Issued |
| 4948211 |
Method and apparatus for optical imaging using a small, flat, reflecting surface |
August 14, 1990 |
| An image forming technique using a small, flat mirror is disclosed. A real, inverted image of an object is formed with infinite depth of field when the diameter of this mirror is between 0.15 and 0.4 millimeters. In smaller diameters, this forms a diffraction pattern image of an object. |
| 4937520 |
Instrument to measure the errors of apparent power meters |
June 26, 1990 |
| An instrument to determine, under actual field conditions, which type of VA demand meters are most appropriate for a particular consumer. The type of electrical load that the consumer places on an electrical supply system can introduce harmonics and phase distortion in the system resulti |
| 4913730 |
Recovery of gold from aqueous solutions |
April 3, 1990 |
| Gold is recovered from aqueous solutions which include a solubilizing reagent by contacting the solution with hydrogen under selected conditions until the gold precipitates, and removing the precipitate from the solution. The reagent comprises a thiourea or a thiosulfate and the solu |
| 4906577 |
Cell culture bioreactor |
March 6, 1990 |
| There is disclosed a cell culture apparatus particularly suitable for the culture of viable, shear sensitive cells, either grown in suspension or attached to a substrate such as microcarrier beads. The apparatus comprises a cell culture compartment and a compensation chamber disposed |
| 4905601 |
Explosive entry and cutting device and a method of explosive entry and cutting |
March 6, 1990 |
| This invention relates to an explosive-containing device for cutting dense material, the device being particularly useful in forced entry situations, e.g. in law enforcement situations or where an immediate entry into a burning building through its wall is required. |
| 4870014 |
Cloning of thermolabile glucoamylase gene into saccharomyces cerevisiae |
September 26, 1989 |
| This inverntion concerns a glycoamylase gene cloned into the yeast Saccharomyces cerevisiae, method for cloning such a gene into such yeasts and cloning vehicles containing such a gene, suitable for use in Saccharomyces cerevisiae. Yeast containing a glucoamylase gene are of potentia |
| 4867515 |
All-optical modulator with a channel waveguide |
September 19, 1989 |
| All optical modulators are disclosed which include a channel waveguide made of an optically nonlinear material and transmitting an infrared beam. A control light whose wavelength is shorter than the bandgap energy of the channel of the guide is directed to the guide to bring it to cutoff |
| 4830965 |
Transposable linkers to transfer genetic information |
May 16, 1989 |
| Transposable linkers are DNA sequences recognized and employed by transposition proteins, including transposases, in the insertion of genetic information into the genetic architecture of an organism and in the movement of genetic information from one location to another in the geneti |
| 4816533 |
Epoxy fortifiers based on aromatic amines |
March 28, 1989 |
| Epoxy resins have been found to be fortified (increased strength and modulus yet not brittle) by compounding(a) a resin-forming polyepoxide,(b) an amine curing agent for (a),(c) a fortifier for (a)+(b) comprising the reaction product of(i) an aromatic amine having an amine group attached to an a |
| 4786859 |
RMS measuring apparatus for AC/DC voltages |
November 22, 1988 |
| A true RMS instrument using a multijunction thermal converter with two beaters automatically determines and displays the RMS value of an unknown voltage using two steps or modes. In an AC mode, the unknown voltage is attenuated and balanced in the thermal converter with a DC voltage. DC |
| 4775483 |
Method to reduce plasma cholesterol |
October 4, 1988 |
| Cholesterol in liquids such as blood plasma can be reduced by passing such liquids over an insoluble matrix such as agarose or treated glass beads to which is attached a C-reactive protein capable of binding cholesterol. An eluent such as sodium chloride or phosphorylcholine can be used |
| 4752946 |
Gas discharge derived annular plasma pinch x-ray source |
June 21, 1988 |
| This invention describes a pulsed plasma pinch x-ray source. In the device the initial plasma annulus is derived from an electrical gas discharge in a chamber having constricted openings arranged on a circle. This low mass plasma annulus is imploded and pinched by passing high current ax |
| 4751723 |
Multiple vacuum arc derived plasma pinch x-ray source |
June 14, 1988 |
| With the intent of satisfying the requirement of x-ray lithography a plasma pinch x-ray source has been developed in which the initial plasma annulus is derived from a plurality of electrical arcs in vacuum. This gives a low mass liner for the standard imploding plasma liner configuratio |
| 4748329 |
Method for on-line thickness monitoring of a transparent film |
May 31, 1988 |
| An optical system is described for monitoring the thickness of a translucent film either free-standing or coated on a reflective substrate. A polychromatic light beam is projected onto the surface of the sheet, and the transmitted light is detected at, at least, three wavelengths of whic |
| 4744807 |
Method of manufacturing a cellulose acetate membrane and the membrane so produced |
May 17, 1988 |
| A cellulose acetate membrane is provided, capable of separating gaseous hydrogen from a gaseous mixture of hydrogen and hydrocarbon, by casting a 0.02 to 0.05 cm cellulose acetate film into an atmosphere at 20.degree. to 40.degree. C. and a relative humidity of 30 to 70%, from a casting |
| 4743870 |
Longitudinal mode fiber acoustic waveguide with solid core and solid cladding |
May 10, 1988 |
| An elastic waveguide, for propagating acoustic waves, consists of an elongated solid core region and an elongated solid outer cladding region. The acoustic waves propagate in a mode where the principle particle displacement is substantially parallel to the longitudinal axis of the wa |
| 4729755 |
Elevator for delicate articles |
March 8, 1988 |
| An elevator comprising a rotating cylinder having a resilient surface, and an endless belt that engages a circumferential segment of the cylinder. Articles are captured between the resilient surface and the belt as they come into contact and are released when they separate at an elevated |
| 4727136 |
Modified meningococcal group B polysaccharide for conjugate vaccine |
February 23, 1988 |
| The group B polysaccharide of Neisseria meningitidis is chemically modified to enhance the immune response thereto, thereby providing cross-reactive antibodies of high affinity. The N-acetyl group of the sialic acid residues of the polysaccharide has been substituted by the N-propionyl |
| 4720457 |
Selective production of ethyl acetate and acetaldehyde by microorganisms |
January 19, 1988 |
| This invention is concerned with the selective production of ethyl acetate and acetaldehyde by microorganisms, for example of the genus Candida and of the genus Hansenula. Ethyl acetate or acetaldehyde may be produced by altering the concentration of ethanol in the medium. |
| 4720287 |
Low temperature thermal-chemical pretreatment process for peat dewatering |
January 19, 1988 |
| This invention concerns dewatering peat by heating it and subjecting it to a surface active agent, preferably a cationic polymeric surface active agent and subsequently pressing the product to yield a peat product with lowered moisture content. |
| 4719008 |
Solvent extraction spherical agglomeration of oil sands |
January 12, 1988 |
| Oil sands and similar hydrocarbon-solids mixtures are separated into their components by steps comprising: mixing with a solvent for the hydrocarbon in an extraction-contacting stage including a controlled light milling action, in the presence of hydrophilic bridging liquid, under select |
| 4713185 |
Sacrificial agents for enhanced oil recovery |
December 15, 1987 |
| Sacrificial agents employed in methods of obtaining oil from rock formations by surfactant flooding comprising oxidized and/or chlorinated lignin and lignin-like derivatives obtained form inexpensive and readily available sources. In one form of the invention such derivatives present |
| 4668342 |
Recausticizing kraft green liquor |
May 26, 1987 |
| A process of recausticizing kraft green liquor in which the green liquor containing sodium carbonate is passed in a stream in admixture with particles comprising slaked lime, in which stream the liquid phase becomes progressively weaker in sodium carbonate and stronger in sodium hydroxid |
| 4601729 |
Aqueous phase continuous, coal fuel slurry and a method of its production |
July 22, 1986 |
| An aqueous phase continuous, fuel slurry is claimed, and its method of production from agglomerates consisting essentially of carbonaceous particles, agglomerating oil and residual water. The slurry may be formed by thoroughly mixing with agglomerates an agglomerate dispersing and co |
| 4424346 |
Derivatives of chitins, chitosans and other polysaccharides |
January 3, 1984 |
| Derivatives have been formed from chitins and chitosans in which the amine residues on the polyglucosamine have been modified to form the groups:(a) --N.dbd.CHR or --NHCH.sub.2 R(b) --NHR'(c) --NHR" and(d) --NH--CH.sub.2 CO.sub.2 H or --NH--glycerylwhereR is an aromatic moiety having at least on |
