Patents Examined by Catherine S. Kilby
  • Process and reagent for increasing the quantum yield in chemiluminescent reactions
    Patent number: 4834918
    Abstract: The present invention provides a process for increasing the quantum yield in the case of the oxidation of luminol or of a 7-dialkylaminonaphthalene-1,2-dicarboxylic acid hydrazide, each alkyl radical of which contains up to 3 carbon atoms, by a peroxide compound in the presence of peroxidase ( POD), wherein the reaction is carried out in the presence of fluorescein, the concentration of the fluorescein being in a concentration range which gives a quantum yield which is greater than the sum of the quantum yields of the individual chemiluminescing materials.The present invention also provides a reagent for the determination of POD, wherein it contains luminol or a 7-dialkylaminonaphthalene-1,2-dicarboxylic acid hydrazide, each alkyl radical of which contains up to 3 carbon atoms, fluorescein, a hydrogen peroxide provider, a buffer substance (pH 7.5 to 9) and optionally a sequestering agent.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: May 30, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Karl Wulff, Marin Berger
  • Immersion oil for microscopy
    Patent number: 4832855
    Abstract: The present invention provides an immersion oil for microscopy, especially suitably a fluorescence microscopy which is superior in properties required for immersion oil for microscopy. This immersion oil comprises a phthalic acid dialkyl ester and a chlorinated paraffin.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: May 23, 1989
    Assignee: Idemitsu Petrochemical Company Limited
    Inventor: Toshiaki Tanaka
  • Photochromic spiropyran compounds
    Patent number: 4826977
    Abstract: A series of novel photochromic spiropyrans are disclosed in which a spiro-adamantane group is introduced into the 2-position of the benzopyran or naphthopyran ring. The spiropyran compounds of the invention exhibit heliochromic properties, i.e. they color in sunlight and fade rapidly at ambient temperatures in the absence of U.V. light, making them good candidates for use in the manufacture of sunglasses. The invention includes lenses which darken in sunlight and incorporate the novel spiropyrans and a process for the preparation of the spiropyran compounds.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: May 2, 1989
    Assignee: The Plessey Company plc
    Inventors: Harry G. Heller, Stephen N. Oliver, John Whittall, Ian Tomlinson
  • Proteinaceous emulsifier, process for preparing same and emulsion type cosmetic compositions containing same
    Patent number: 4826818
    Abstract: A proteinaceous emulsifier can be obtained by reacting an amino acid ester with a hydrophilic protein in the presence of an endopeptidase to form decomposition products of the hydrophilic protein having a carboxyl end group joined to the amino group of the amino acid ester by amide linkage.This proteinaceous emulsifier has a typical surfactant structure in which a hydrophobic portion consisting of the amino acid ester is attached to the rear end of a hydrophilic portion consisting of the protein, and is characterized by causing little irritation to the skin, exhibiting strong emulsifying power and possessing moisture retention properties. Thus, it is very suitable for use as an emulsifier in various cosmetics such as creams, milky lotions and the like.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: May 2, 1989
    Assignee: Kanebo Ltd.
    Inventors: Kenji Mori, Kazuyoshi Morita, Shizume Takemoto, Hisanao Nagasawa, Yasuhisa Ohtani, Masashi Matsui, Sohichi Arai
  • Homogeneous microemulsion compositions based on halogenated polyhydroxylated compounds and halogenated alkanes and their application to the manufacture of rigid foams
    Patent number: 4826623
    Abstract: A stable homogeneous composition in the form of a microemulsion suitable for making rigid foams comprising a halogenated polyhydroxylated compound, a halogenated alkane, and a surfactant in an amount sufficient to maintain a stable microemulsion.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: May 2, 1989
    Assignee: Atochem
    Inventors: Evelyne Bonnet, Francois Tilquin
  • Polarizing film
    Patent number: 4824882
    Abstract: Disclosed is a polarizing film comprising a hydrophobic polymer containing a dichroic organic colorant in an oriented state which is characterized in that the dichroic organic colorant is substantially insoluble in water, organic solvents and liquid crystals and the dichroic ratio of the colorant is not less than 7 when it is measured with the film obtained by blending the colorant intimately with polyethylene terephthalate, melting the resulting blend and forming it into a film. This polarizing film has exceptionally excellent moisture resistance and thermal resistance.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: April 25, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Katsuji Nakamura, Junichi Fujio, Shin Hosonuma, Masakatsu Nakatsuka, Tsutomu Nishizawa
  • Optical nonlinearity in organic and organometallic molecules via lattice inclusion complexation
    Patent number: 4818898
    Abstract: There are disclosed a nonlinear optical element capable of second harmonic generation comprising a crystalline inclusion complex of a lattice-forming host compound crystallized with continuous channel cavities in the presence of a nonlinearly polarizable guest compound in a noncentrosymmetric space group, said guest compound having specified properties, and both said guest and host being selected from specified classes; a nonlinear optical device; a method of generating second harmonic radiation; and an electro-optic modulator.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: April 4, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Albert G. Anderson, David F. Eaton, Wilson Tam, Ying Wang
  • Photoreactive lenses with adamantane spiro compounds
    Patent number: 4818096
    Abstract: Photoreactive plastics lenses are disclosed which are coated or impregnated with an adamantane 2-spiro-benzo or naphthopyran and with a blue coloring photochromic benzo- or naphthopyran having a nitrogen containing substituent in the 2-position in the pyran ring. The lenses darken in sunlight and fade rapidly at ambient temperatures in the dark or in white light which does not contain a U.V. component. The combination of the yellow/orange coloring adamantane 2-spiro pyran compound with the purple/blue coloring pyran gives a desired brown/grey coloration in the sunlight-darkened lens. The invention includes novel blue-coloring pyran compounds in which the nitrogen-containing substituent in the 2-position is a phenyl group having an amino or substituted amino or nitrogen-containing heterocyclic substituent in the ortho- or para-position of the phenyl group.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 4, 1989
    Assignee: The Plessey Company plc
    Inventors: Harry G. Heller, Stephen N. Oliver, John Whittall, Jack Brettle, Clive Trundle, Martin W. Baskerville
  • Second harmonic generation by carbamic acid derivatives
    Patent number: 4818899
    Abstract: Devices for and method of generating coherent second harmonic light radiation. The devices comprise a laser source of coherent light radiation at a fixed fundamental frequency, a crystalline N-aryl carbamyl compound that crystallizes in a non-centrosymmetric configuration, means for directing the output radiation of the laser onto the crystalline chiral N-aryl carbamyl compound, and output means for utilizing the second harmonic frequency.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: April 4, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: George V. D. Tiers
  • Polymer blends exhibiting nonlinear optical response
    Patent number: 4807968
    Abstract: In a preferred embodiment this invention provides novel organopolysiloxane/liquid crystalline polymer blends which exhibit nonlinear optical response.Illustrative of an invention composition is a blend of (1) organopolysiloxane corresponding to the formula: ##STR1## where n is an integer of at least 5; and (2) a liquid crystalline polymer corresponding to the formula: ##STR2## where m is an integer of at least 3.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Thomas M. Leslie
  • Immunological lipid emulsion adjuvant
    Patent number: 4806352
    Abstract: An immunological adjuvant is provided which enhances the immune response against antigens, and accordingly is useful in vaccines. The adjuvant system is comprised of (1) a lipid emulsion system containing a metabolizable oil, a low molecular weight polyol and lecithin and (2) at least one refined detoxified bacterial biological adjuvant.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: February 21, 1989
    Assignee: Ribi ImmunoChem Research Inc.
    Inventor: John L. Cantrell
  • Vaccine formulation
    Patent number: 4806350
    Abstract: A highly immunogenic aqueous vaccine formulation adjuvanted with a saponin and an oil.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: February 21, 1989
    Assignee: Norden Laboratories, Inc.
    Inventor: Jay D. Gerber
  • Immunological emulsion adjuvants for polysaccharide vaccines
    Patent number: 4803070
    Abstract: An immunological adjuvant for polysaccharide vaccines is provided whereby polysaccharide antigens are rendered more immunogenic and thus stimulate more antibody production including an IgG response and immunological memory. The adjuvant is comprised of (1) either (A) an emulsion system containing a metabolizable oil, a low molecular weight polyol and lecithin, or (B) an oil-in-water emulsion system containing a light hydrocarbon non-biodegradable oil or a biodegradable oil, and a detergent; and (2) a refined detoxified endotoxin. The adjuvant can optionally also contain trehalose dimycolate.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: February 7, 1989
    Assignee: Ribi ImmunoChem Research Inc.
    Inventors: John L. Cantrell, Jon A. Rudbach
  • Light-polarizing film
    Patent number: 4803014
    Abstract: The present invention relates to a high-performance light-polarizing film assuming a neutral gray wherein are absorbed and oriented, in a polymer film, (A) iodine as a main polarizing coloring matter and additionally (B) a dichroism dye having a absorption characteristics and polarization characteristics in the low wavelength region of visible light and showing, when absorbed and oriented together with iodine in a polymer film, a direction of transition moment substantially identical with that of iodine and/or a dichroism dye having absorption characteristics and polarization characteristics in the high wavelength region of visible light and showing, when absorbed and oriented together with iodine in a polymer film, a direction of transition moment substantially identical with that of iodine.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: February 7, 1989
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Takuzo Okumura, Toyokazu Okada, Hitoshi Kikui
  • Variable light transmittance glass board functional as electrochromic cell
    Patent number: 4801195
    Abstract: The invention relates to a variable light transmittance glass board which is an electrochromic cell in principle and is comprised of oppositely arranged two transparent glass substrates each of which is laid with a transparent electrode film, first and second electrochromic layers formed on the two electrode films, respectively, by using tungsten trioxide for the first layer and Prussian blue for the second layer and an electrolyte liquid which fills up the space remaining between the two electrode films. The electrolyte liquid is a solution of a conventional supporting electrolyte such as lithium perchlorate in an organic polar solvent such as propylene carbonate. Durability of both electrochromic layers at elevated temperatures is greatly improved by adding 0.2-3.0 wt % of water to the organic polar solvent.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: January 31, 1989
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Mikio Kawai, Harutoshi Miyagi, Mikio Ura
  • Process for the production of a foam inhibitor mixture
    Patent number: 4801401
    Abstract: To prepare a highly effective foam inhibitor mixture consisting of paraffin hydrocarbons, hydrophobicized silica and liquid paraffin hydrocarbons, a finely divided silica is dispersed in paraffin hydrocarbons melting above 40.degree. C. and reacted with alkyl trichlorosilanes wherein the alkyl groups contain from 4 to 22 carbon atoms.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: January 31, 1989
    Assignee: Henkel Kommanditsegellschaft auf Aktien
    Inventors: Paul Schulz, Martin Witthaus, Juergen Waldmann
  • Organopolysiloxanes exhibiting nonlinear optical response
    Patent number: 4801659
    Abstract: In a preferred embodiment this invention provides novel organopolysiloxanes which exhibit nonlinear optical response.Illustrative of an invention organopolysiloxane is a polymer corresponding to the formula: ##STR1## where n is an integer of at least 5.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: January 31, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Thomas M. Leslie
  • Oil-in-water emulsions with increased viscosity under shear stress
    Patent number: 4798682
    Abstract: Oil-in-water emulsions show improved viscosity behavior, more especially an increased viscosity under shear stress, when the continuous aqueous phase contains a combinations of hydrocolloids comprising: (a) at least one water-soluble nonionic cellulose ether; and (b) a cross-linked acrylic acid polymer or copolymer having a weight average molecular weight of from 1,000,000 to 5,000,000; in the form of a water-soluble salt in a quantitative ratio a:b of from 9:1 to 1:9. Cosmetic O/W-creams according to the invention show more "body" when applied to and spread over the skin.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: January 17, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Achim Ansmann
  • Functional fluids containing associative polyether thickeners, certain dialkyl-dithiophosphates, and a compound which is a source of molybdate ion
    Patent number: 4797229
    Abstract: The invention relates to thickened fuctional fluids. The functional fluids can be used in hydraulic systems or as metalworking compositions to cool and lubricate surfaces which are in frictional contact during operations such as the turning, cutting, peeling, or grinding of metals.The functional fluid contains a diluent, a dialkyldithiophosphate, a compound which is a source of molybdate ion, a polyether nonionic surfactant, and an associative polyether thickener.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: January 10, 1989
    Assignee: BASF Corporation
    Inventors: Mark A. Frentrup, Joseph R. Gibson, James E. Carson, Pauls Davis
  • Macrophage-activating composition and a process for its manufacture
    Patent number: 4795745
    Abstract: Macrophage-stimulatory composition containing a water-soluble .beta.-1.3-bound glucan and a water-insoluble carrier to which the glucan has been immobilized; its use; and a process for its manufacture.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: January 3, 1989
    Inventors: Karl O. P. Larm, James Hoffman, Rolf Seljelid, Jarl Bogwald