Patents Examined by Margaret Argo
  • Patent number: 5059723
    Abstract: This invention relates to the use of triorganophosphine compounds as catalyst for the reaction of phenols or thiophenols with cyclic organic carbonates.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: October 22, 1991
    Assignee: Indspec Chemical Corporation
    Inventor: Hans Dressler
  • Patent number: 5053555
    Abstract: A method is provided for making certain hydroxy-terminated arylene ethers useful as spacers in liquid crystalline polyesters. There is initially formed a dicarbonyl adduct from a dihydroxyaromatic compound, such as hydroquinone and a haloarylcarbonyl compound. The adduct formed is oxidized to the corresponding diester. Hydrolysis of the diester provides the hydroxy-terminated arylene ether.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: October 1, 1991
    Assignee: General Electric Company
    Inventors: Gary W. Yeager, David N. Schissel
  • Patent number: 5051353
    Abstract: A hemoglobin-containing blood substitute preparation is protected from oxtion to methemoglobin. The protected preparation comprises between 10 mM and 60 mM of a compound selected from the group consisting of glutathione (GSH), nicotinamide adenine dinucleotide (NADH), nicotine adenine dinucleotide phosphate (NADPH) and mixtures of these in the aqueous phase of a hemoglobin-containing fluid. Oxidized hemoglobin in a preparation can be restored by adding between 10 mM and 60 mM of a compound selected from the group consisting of glutathione (GSH), nicotinamide adenine dinucleotide (NADH), nicotine adenine dinucleotide phosphate (NADPH) and mixtures of these to a hemoglobin-containing fluid in which the hemoglobin has converted in whole or part to methemoglobin, and storing the fluid at storage temperatures for blood products above the freezing point of the fluid for a time sufficient to convert methemoglobin to hemoglobin.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: September 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Lewis P. Stratton, Martha C. Farmer, Alan S. Rudolph
  • Patent number: 5051534
    Abstract: The present invention relates to a group of compounds which are novel squalene derivatives containing the cyclopropyloxy functionality and which act to inhibit the synthesis of cholesterol in mammals and in fungi.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: September 24, 1991
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael R. Angelastro, Norton P. Peet, Philippe Bey
  • Patent number: 5047593
    Abstract: This invention encompasses a compound of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are the same or different members of the group consisting of 1,1-dimethylethyl, halo, phenyl and substituted phenyl; Alk is straight or branched chain lower alkylene; R.sub.4 is hydrogen or lower alkyl; R.sub.3 is hydrogen or lower alkyl; or a cycloalkyl group of from 3 to 8 carbon atoms. The formulation of this invention are useful as anti-inflammatory and anti-allergy agents.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: September 10, 1991
    Assignee: G. D. Searle & Co.
    Inventor: Richard A. Mueller
  • Patent number: 5041689
    Abstract: Purified L-quebrachitol is recovered in increased quantities from rubber latex by dissolving concentrated solutions or pulverized solids of the serums in methyl alcohol under specified extraction conditions.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: August 20, 1991
    Assignees: The Yokohama Rubber Co., Ltd., The Board of the Rubber Research Institute of Malaysia
    Inventors: Yoshitaka Udagawa, Morihisa Machida, Seiichiro Ogawa
  • Patent number: 5032688
    Abstract: A process for the preparation of aralkyl hydroperoxides having the formula (I) is described ##STR1## in which n=1, 2 or 3, Ar means a phenyl group which can be substituted with halogen or one or more branched or straight chain alkyl groups with 1 to 5 C-atoms, or a naphthyl group, and each radical R.sup.1 and R.sup.2 means a low alkyl radical, the alkyl radicals R.sup.1 and R.sup.2 together having 2 to 4 carbon atoms, by reaction of aralkyl carbinols having the formula (II) ##STR2## in which Ar, R.sup.1, R.sup.2 and n have the meaning given for formula (I), with hydrogen peroxide under acid conditions, the reaction being carried out in the presence of an acid-combining agent. An alkali sulphate, ammonium sulphate, alkali hydrogen sulphate and/or ammonium hydrogen sulphate is used in preference as the acid-combining agent. Tert.aralkyl hydroperoxides can be prepared in high yield with a high purity in a simple and safe manner with this process.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: July 16, 1991
    Assignee: Peroxid-Chemie GmbH
    Inventors: Maximilian Dorn, Eberhard Hagel, Werner Zeiss
  • Patent number: 5030752
    Abstract: A formylated alkylbenzenesulfonyl halide compound represented by the following general formula (I): ##STR1## wherein R.sub.1 is an alkyl group having 1 to 5 carbon atoms; R.sub.2 and R.sub.3 are each a member selected from the group consisting of a hydrogen atom and alkyl groups having 1 to 5 carbon atoms; X is a halogen atom; the sulfonyl halide group is present at the ortho or para position while the formyl group at the para or ortho position relative to the group R.sub.1 when R.sub.2 and R.sub.3 are both a hydrogen atom, while the sulfonyl halide group and the formyl group are present at the para positions relative to the groups R.sub.1 and R.sub.2, respectively, when R.sub.2 is an alkyl group and R.sub.3 is a hydrogen atom, or the sulfonylhalide group and the formyl group are present at the para positions relative to the groups R.sub.1 and R.sub.2, respectively, when R.sub.2 and R.sub.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: July 9, 1991
    Assignee: Agency of Industrial Science and Technology
    Inventors: Yoshie Souma, Jun Iyoda, Hirosi Sano
  • Patent number: 5012011
    Abstract: This invention relates to fluorinated vinyl ethers having the formula ##STR1## wherein t has a value of from 1 to 22; R' is C.sub.2 to C.sub.20 alkylene, alkoxyalkylene, arylene or aryloxyalkylene which radicals are optionally fluorinated; R" is a divalent radical having from 1 to 100 carbon atoms and is selected from the group of alkylene, arylene, alkarylene, aralkylene which groups are optionally substituted with lower alkyl or the radical ##STR2## wherein R is a polyvalent linear, branched or cyclic hydrocarbon radical having from 2 to 20 carbon atoms, optionally substituted with alkyleneoxy; A is a divalent radical selected from the group of ##STR3## where each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is independently hydrogen or ##STR4## B is lower alkyl; m has a value of from 0 to 4 and n has a value of from 0 to 20. The invention also relates to the manner of synthesizing the present fluorinated vinyl ethers and to their uses as release agents and stain protective coatings.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: April 30, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Kou-Chang Liu, Paul D. Taylor
  • Patent number: 5003098
    Abstract: A method of reducing or eliminating adverse effects of a pharmaceutical composition or a drug is disclosed. The method comprises administering to an animal or a human an amount of at least one specific isomer of inositol triphosphate sufficient to reduce or eliminate said adverse effects.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: March 26, 1991
    Assignee: Perstorp AB
    Inventors: Matti Siren, David Blake
  • Patent number: 5003105
    Abstract: A process for preparing 2-chloroterephthaloyl chloride which comprises reacting terephthaloyl chloride with chlorine in the presence of an anhydrous ring chlorination catalyst. When the reaction mixture contains the desired amount of the monochloro product, the mixture is cooled to room temperature and the 2-chloroterephthaloyl chloride is isolated.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: March 26, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert L. Seagraves
  • Patent number: 4987267
    Abstract: An oligohexafluoropropylene oxide compound having the general formula (I): ##STR1## wherein n represents an integer of 2 to 5. The compound is useful for preparing a polymer having good thermal resistance, chemical stability, non-adhesion properties, water and oil repellencies, and flexibility, when copolymerized if other monomers.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: January 22, 1991
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Akio Takaoka, Noriyuki Koike, Hideki Fujii
  • Patent number: 4987272
    Abstract: Novel dipropargyl ether of alpha, alpha'-bis(4-hydroxyphenyl)-para-diisopropylbenzene is useful in preparing resins having desirable properties as laminates and the like.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: January 22, 1991
    Assignee: Shell Oil Company
    Inventor: Anthony M. Pigneri