Patents Examined by Isabelle Rodriguez
  • Patent number: 5071529
    Abstract: A method for immobilizing proteins and large polypeptides on a carrier support for solid-phase sequence. Upon irradiation, a functional group bound to the carrier is excited to a triplet biradical state and thereby rendered capable of bonding to amino acid units; unbound functional groups return to their starting state upon removal of the radiation.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: December 10, 1991
    Assignee: Hewlett-Packard Company
    Inventor: Marcus J. Horn
  • Patent number: 4976837
    Abstract: A blocked polyisocyanate of the formulaR-Y.sub.mwhere R is an m valent aliphatic, cycloaliphatic, heterocyclic or aromatic residue;each Y, which may be the same or different, is ##STR1## where R.sub.1 is, or, when n is more than 1, each R.sub.1, which may be the same or different, is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen or ##STR2## group where R.sub.2 is a C.sub.1 -C.sub.4 alkyl group; n is 0, 1, 2 or 3; andm is an integer greater than 1 is useful in paint compositions.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: December 11, 1990
    Assignee: The Baxenden Chemical Co.
    Inventors: Anthony H. Hughes, Arthur Topham
  • Patent number: 4970154
    Abstract: Disclosed are an apparatus and a method for the poration and fusion of cells using high-power radiofrequency electrical pulses. The electrodes of the apparatus can be hand held or part of integrated equipment with special containers for cells. The electrodes, which are positioned equidistant from each other, are attached to a high power function generator. The power function generator can apply a continuous AC electrical field and/or a high-power pulsed radiofrequency electrical field across the electrodes. The alternating electrical field induces cell congregation by the process of dielectrophoresis. The high-power pulsed radiofrequency electrical field porates or fuses the cells. The method has the ability to porate or fuse biological cells with a very high efficiency. The method can be used to fuse or porate a variety of cells including animal cells, human cells, plant cells, protoplasts, erythrocyte ghosts, liposomes, vesicles, bacteria and yeasts.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: November 13, 1990
    Assignee: Baylor College of Medicine
    Inventor: Donald C. Chang
  • Patent number: 4963236
    Abstract: The present invention includes novel apparatus and methods for isoelectric focusing of amphoteric substances within fluids containing carrier ampholytes. The present invention utilizes multichannel recycling isoelectric focusing techniques which eliminate mixing of fluid which passes through the isoelectric focusing cell with the original crude fluid sample. Mixing is avoided by preferably using a dual reservoir system and alternating the fluid flow into and out of each reservoir after each pass through the isoelectric focusing cell. Fluid flow is alternated into and out of each reservoir of each reservoir pair through use of reservoir inlet and outlet valves. The reservoir inlet and outlet valves preferably operate in response to the fluid level within the reservoir supplying fluid to the isoelectric focusing cell. When the reservoir empties the corresponding reservoir outlet valve automatically engages to stop fluid flow from the empty reservoir and to start fluid flow from the full reservoir.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: October 16, 1990
    Assignees: Ampholife Technologies, The Board of Regents University of Texas System
    Inventors: L. Scott Rodkey, G. David Huff
  • Patent number: 4960533
    Abstract: A solvent based upon a volatile silicone (cyclomethicone) which has a prime utility of removing soap scum or alkaline earth oxide stearates. The composition is utilized as a bi-composition of dimethycyloxane or cyclomethicone and Silwet L-77 (Union Carbide), a polyalkylene oxide modified dimethyl polysiloxane. The addition of glutaric acid to the composition adds a dicarboxylic acid which assists in emulsifying and loosening soil and an optimum pH aqueous solution.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: October 2, 1990
    Assignee: Colgate-Palmolive Company
    Inventors: Karen L. Wisniewski, Mary L. Knudson
  • Patent number: 4959211
    Abstract: The instant invention relates to a process in which important improvements are introduced in virus production and inactivation steps, as well as in the vaccine formulation step. The virus is reproduced in animals immuno-depressed through ionizing radiations, thus making it possible to use adult host animals, not naturally sensitive to the virus, with the advantage of using all types of tissues thereof. Bacterial infections are prevented by antibiotic administration. Virus inactivation is also obtained through ionizing radiations. Radiation doses do not affect antigenic properties, as may be noted from the interpretation of the Target Theory.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: September 25, 1990
    Inventors: Jorge H. Lombardo, Eduardo E. Smolko, Rodolfo A. Ugalde, Scholein Rivenson
  • Patent number: 4957648
    Abstract: A spin fiber lubricant composition is disclosed. The composition is essentially comprised of a liquid carrier having therein an ester of the general structural formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are hydrocarbyl groups preferably in the form of alkyl groups containing 1-6 carbon atoms. The composition has been found to be useful in connection with providing materials with lubricating properties which are desirable for the spinning of fibers.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: September 18, 1990
    Assignee: The Lubrizol Corporation
    Inventors: Richard Yodice, Gregory A. Lentz
  • Patent number: 4954286
    Abstract: An aqueous clear, homogeneous liquid composition is provided for the pretreatment of fabric in advance of laundering. The composition includes a mixture of nonionic surfactants with a respective HLB less than 10 and greater than 10. Also present will be a hydrocarbon solvent and the salt of a C.sub.12 -C.sub.22 fatty acid. One embodiment of the composition is an aerosol mousse discharging as a foam that will a number of times alternately expand and collapse.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: September 4, 1990
    Assignee: Lever Brothers Company
    Inventors: Ralph R. Sepulveda, Jesse L. Lynn, Jr.
  • Patent number: 4954280
    Abstract: A stable liquid automatic dishwashing compositions as well as a process for its preparation is disclosed. The composition is an aqueous thixotropic fluid possessing a yield point. The composition may include swellable clays, synthetic polymers, a specified amount of multivalent cations, builder salts, an alkaline source, a hypochlorite source, nonionic or anionic surfactants, and defoamers. The system containing clay, polymer, and ions thickens the composition to provide structure to suspend finely divided solid components, while maintaining good salt tolerance and stability against hypochlorite.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: September 4, 1990
    Assignee: Lever Brothers Company
    Inventors: David L. Elliott, Steven P. Christiano, David J. Lang, Rosemary M. Sisco
  • Patent number: 4954231
    Abstract: The subject of the invention is functional chlorofluoro compounds of general formula: ##STR1## in which R.sub.F denotes a perfluoroalkyl radical, n is equal to 0 or 1, X denotes a chlorine or fluorine atom or a trichloromethyl or trifluoromethyl radical, and Y denotes a chlorine atom, an optionally salified or esterified hydroxyl group or an optionally substituted amino group, the arrangement R.sub.F --CCl.sub.2 --(CCl.sub.2 --O).sub.n containing at least 3 carbon atoms.By photochlorination of the esters R.sub.F --CH.sub.2 CH.sub.2 --O--CO--X, the compounds I (n=1) are obtained, which are then rearranged to acid chlorides I (n=0, Y.dbd.Cl) from which the corresponding acids, salts, esters and amides are optionally formed (formula I with n=0 and Y=optionally salified or esterified hydroxyl or optionally substituted amino).
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: September 4, 1990
    Assignee: Societe Atochem
    Inventors: Yves Correia, Gilles Drivon, Jean Lesparre
  • Patent number: 4952557
    Abstract: A method for depositing superconducting ceramic materials on an article by electrodeposition including the steps of obtaining a dispersion of the components of a superconducting ceramic material in a non-aqueous medium and creating an electrical field within the medium such that the material will migrate to and deposit on an electrode placed within the medium. After deposition, the article is sintered and then reoxygenated to achieve the composition required for the superconducting ceramic material.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: August 28, 1990
    Assignee: Ametek, Inc.
    Inventor: Ferenc Schmidt
  • Patent number: 4948520
    Abstract: A softener composition comprises a mixture of (A) a mono(long-chain) quaternary ammonium salt such as monotallowalkyl trimethyl ammonium chloride, (B) a di(long-chain) quaternary ammonium salt such as ditallowalkyl dimethyl ammonium chloride and (C) a tri(long-chain) quaternary ammonium salt such as tritallowalkyl monomethyl ammonium chloride), the weight ratio of the components (A):(B):(C) falling within the range of from 2 to 30: 96 to 50: 2 to 20, and iodine value of the mixture being in the range of 35 to 100; and (D) a polyoxyethylene adducted nonionic surfactant such as polyoxyethylene octylphenyl ether (P=40). The softener composition improves the softness of natural fibers without impairing the water absorption properties thereof. It also improves the softness of chemical fibers and gives them excellent antistatic property.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: August 14, 1990
    Assignee: Lion Corporation
    Inventor: Hisami Sasaki
  • Patent number: 4943360
    Abstract: A method for regenerating a waste liquor containing nitric acid and hydrofluoric acid to recover highly pure nitric and hydrofluoric acids therefrom. The method comprises adding hydrofluoric acid, or an acid mixture of nitric and hydrofluoric acids having a major content of the hydrofluoric acid, to a nitric acid and hydrofluoric acid waste liquor, and subjecting the resulting mixture to dialysis with an ion-exchange electrodialyzer to recover the dialyzed acids. The acid-removed solution is neutralized to cause a precipitate to form and the precipitate is separated. The resultant solution is subjected to an ion-exchange membrane electrodialyzer using a combination of a bipolar membrane, an anion-exchange membrane and a cation-exchange membrane for separation into the acids and the alkali, which are subsequently recovered. The process has a high current efficiency and high recovery rates for acids.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: July 24, 1990
    Assignee: Shinko Pantec Company, Limited
    Inventors: Masanori Sugisawa, Takashi Sasaki, Yoshihito Nishimoto
  • Patent number: 4939119
    Abstract: A process for producing a superconducting article having a layer of compound oxide of quasi-perovskite type oxide crystal structure by electrodeposition technique. The process is characterized by dispersing a material powder in a liquid containing a carrier, driving ionized material particles towards a substrate by applying a direct current between a substrate and a counter electrode, and then sintering a thin layer of powders deposited on the substrate to convert the deposited powders to a superconducting compound oxide.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: July 3, 1990
    Assignee: Sumitomo Electric Industries, Inc.
    Inventors: Kouichi Iwata, Hiroyuki Fujikawa, Shuji Yazu, Tetsuji Jodai
  • Patent number: 4931202
    Abstract: Highly alkaline detergent compositions are prepared by mixing together, in a mixing device, a melt of alkaline material with a hardness sequestering agent, such as an alkali metal complex phosphate sequestrant. The resulting mixture is, then, pelletized on a chill belt. A source of solid active chlorine pellets is combined with the pelletized mixture. Chlorine degradation is essentially eliminated by combining the alkaline material pellets with the pelletized chlorine source.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: June 5, 1990
    Assignee: Diversey Corporation
    Inventors: Terrence Cotter, Theodore Anderson, Robert Gansser, Lewis R. Kryk, Theodore R. Rieple
  • Patent number: 4931205
    Abstract: Certain mixtures of the ethylene oxide adducts of higher carbon number tertiary thiols, having a reduced content of free thiols and lower (i.e., 1 to 3 mol) ethylene oxide adducts, exhibit improved detergency performance, particularly in high temperature laundry applications.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: June 5, 1990
    Assignee: Shell Oil Company
    Inventors: Charles L. Edwards, Herbert E. Fried, Werner Lilienthal
  • Patent number: 4929318
    Abstract: A halogenated alkane of the formulaR--CHXY (I)wherein R is a trifluoromethyl group, a chlorodifluoromethyl group, a dichlorofluoromethyl group, a chlorofluoromethyl group, a difluoromethyl group, a fluoromethyl group or a 2-chloro-1,1,2,2-tetrafluoroethyl group, and X and Y are the same or different and a hydrogen atom, a chlorine atom or a fluorine atom can be prepared at a high yield by reducing a halogenated alkane of the formula:R--CClXY (II)wherein R, X and Y are the same as defined above with the irradiation of light having a wavelength of not longer than 300 nm in an oxygen-free reaction atmosphere in the presence of 3 to 10 moles of an alcohol per mole of the halogenated alkane of the formula (II) or in the presence of 0.1 to 10 moles of an alcohol per mole of the halogenated alkane of the formula (II) and an alkali.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: May 29, 1990
    Assignee: Daikin Industries Ltd.
    Inventors: Yasuhisa Furutaka, Hirokazu Aoyama, Tsunetoshi Honda
  • Patent number: 4927429
    Abstract: Synthetic textile fibers are dyed in a waterless coloring composition composed of a high-boiling ester solvent and a dye that (a) is soluble to the extent of at least 1.5% in the solvent, (b) provides a depth of coloration, expressed as yield, of at least 25%, (c) imparts to the dyed fibers a lightfastness value of at least 3, and (d) provides the dyed fibers with a washfastness value of at least 3.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: May 22, 1990
    Assignee: Burlington Industries, Inc.
    Inventor: George L. Brodmann
  • Patent number: 4927555
    Abstract: Process for making a thixotropic detergent slurry, particularly suitable for use in making compositions useful in household automatic dishwashers. A slurry of particles of alkaline water-soluble builder salt, particularly sodium tripolyphosphate, is formed in a liquid containing dissolved alkaline builder salt, such as alkali metal carbonate. The proportion of solid particles is so high that the slurry has a viscosity of about 20,000 to 60,000 centipoises. This viscous slurry is subjected to wet grinding with a high speed disperser. Water and powdered clay are then added and the clay is deagglomerated in the mixture by mechanical action. Improved compositions containing limited amounts of potassium compounds and water-soluble polymers are also disclosed.
    Type: Grant
    Filed: July 26, 1988
    Date of Patent: May 22, 1990
    Assignee: Colgate-Palmolive Company
    Inventor: Remo J. Colarusso, Jr.
  • Patent number: 4925538
    Abstract: A method of electrolytically treating metals with an a.c. current or alternating pulsive current using an electrode comprising a metal substrate having a coating that comprises an oxide of ruthenium, iridium or rhodium as a counter electrode.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: May 15, 1990
    Assignee: Permelec Electrode Ltd.
    Inventors: Yukiei Matsumoto, Yoshinori Nishiki, Kazuhiro Hirao, Takayuki Shimamune