Patents Examined by Christine A. Skane
  • Patent number: 5679280
    Abstract: A homogeneous electro rheological fluid of the invention comprises a poly(.alpha.-amino acid) or a poly(.gamma.-glutamate), and an electric insulating liquid in a specific amount to. To provide a homogeneous electro rheological fluid of good stability, with long lasting and consistent performance in the presence of a trace of water. The fluid also exerts a good electro rheological effect wherein a hydrocarbon oil or an ester-type oil is used as an electric insulating liquid.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: October 21, 1997
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Makoto Sasaki, Takafumi Ishii, Katsuhiko Haji
  • Patent number: 5670740
    Abstract: A gas generant charge comprises a heterogeneous mixture of between about 80 and about 95 wt % of a first gas generant composition 1) and between about 5 and about 20 wt % of a second gas generant composition 2), based on the total weight of 1) plus 2). The first gas generant composition 1) comprises between about 20 and about 40 wt % fuel A) and between about 20 and about 60 wt % oxidizer B). Between about 50 and about 85 wt % of the fuel A) is a triazole or tetrazole compound A.sup.1), and between about 15 and about 50 wt % of the fuel is, a water-soluble fuel A.sup.2). At least about 20 wt % of the oxidizer B), up to 100%, a transition metal oxide B.sup.1); balance of the oxidizer is selected from the group B.sup.2) consisting of alkali and/or alkaline earth metal nitrates, chlorates or perchlorates.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: September 23, 1997
    Assignee: Morton International, Inc.
    Inventors: Michael W. Barnes, Robert D. Taylor, Christopher Hock, Michael P. Jordan, Matthew A. Cox, Alan J. Ward
  • Patent number: 5670643
    Abstract: The present invention relates to a process for the preparation of finasteride, the compound of formula (I), comprising the reaction of the compound of formula (II) with t-butylamine.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: September 23, 1997
    Assignee: Glaxo Wellcome Inc.
    Inventors: Roman Davis, Alan Millar
  • Patent number: 5670080
    Abstract: A nonazeotropic working fluid medium for use in a thermodynamic cycle system, comprising a mixture of compounds and characterized in that one or more vaporization loss/replenishment cycles of each less than about 15% of the total weight of the medium and cumulative up to about 50% of the total weight of the medium result in a total decrease in the coefficient of performance of said medium of no more than about 5%, or a loss in electric power generating efficiency of not more than about 3 percent.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 23, 1997
    Inventor: Chujun Gu
  • Patent number: 5667532
    Abstract: A liquid alkali composition for use in fiber reactive dyeing of cotton and cotton blended fabrics or the like. The liquid alkali is a solution of an alkali metal hydroxide and its carbonate formed by reaction of liquid CO.sub.2 with the alkali metal hydroxide solution. The resulting supersaturated solution has a high enough Total Alkalinity to achieve reaction between the dye and fiber but is sufficiently buffered to achieve this reaction slowly so that the fiber reactive dyes fix in a level, uniform fashion. Preferably the composition is a mixture of potassium hydroxide, potassium carbonate, potassium citrate, and potassium polyacrylate. The citrate and polyacrylate act as dispersants in the dyeing process and also act as crystallization inhibitors in solution. The use of the carbonate compounds of the present invention in place of conventional silicates or phosphorus prevents the discharge of untreatable toxic wastewater into natural waterways.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: September 16, 1997
    Assignee: Burlington Chemical Co., Inc.
    Inventor: Samuel B. Moore
  • Patent number: 5665692
    Abstract: A process wherein the particle size of high density detergent agglomerates produced via agglomeration of a high active surfactant paste can be effectively and inexpensively controlled. More particularly, the process invention includes the step of regulating the level of carbonate in a highly active surfactant paste which is combined with other detergent ingredients in an agglomeration process. The agglomeration process also includes the step of treating the surfactant paste and other detergent ingredients in a high speed mixer/densifier followed by a low or moderate speed mixer/densifier resulting in detergent agglomerates.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: September 9, 1997
    Assignee: The Procter & Gamble Company
    Inventor: George John Kaminsky
  • Patent number: 5662825
    Abstract: 1,1,1,3,3,3-Hexafluoropropane is disclosed as a refrigerant.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: September 2, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald Bernard Bivens, Richard Edward Fernandez, Mark Brandon Shiflett, Tuneen Chisolm-Carter
  • Patent number: 5656793
    Abstract: A gas generator contains hydrazodicarbonamide serving as a reducing agent, oxoacid salt serving as an oxidizing agent, and a combustion controller which is catalytic or combustible. As a combustible combustion controller, boron, and zirconium are preferred. The gas generator includes a flame coolant containing at least one compound selected from the group consisting of hydrates of metal sulfates, hydrates of metal nitrates, hydrates of metal carbonates, metal hydroxides, and hydrates of metal hydroxides in which the metal moieties are selected from the III, IV, V, and VI Period metal of the Periodic Table. As a flame coolant, magnesium hydroxide is preferred.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: August 12, 1997
    Assignee: Eiwa Chemical Ind. Co., Ltd.
    Inventors: Koji Ochi, Nobukazu Asano, Kenji Harada, Keiji Sakumoto
  • Patent number: 5654264
    Abstract: The present invention includes compositions of octafluorobutane and a compound of the formula C.sub.a F.sub.b H.sub.2a+2-b, where a=3 or 4 and b=1 to 8 are disclosed. These compositions, which may be azeotropic or azeotrope-like, may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, refrigerants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents or displacement drying agents.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barbara Haviland Minor
  • Patent number: 5653908
    Abstract: The invention includes compositions of 1,2,2,3,3,4,4,4-octafluorobutane and bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1-difluoromethoxy-1,1,2,2-tetrafluoroethane, 1-difluoromethoxy-1,2,2,2-tetrafluoroethane, 2,2,3,3,4,5,5-heptafluorotetrahydrofuran or 2,2,3,3,4,4,5-heptafluorotetrahydrofuran; 1,1,1,2,3,4,4,4-octafluorobutane and bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1-difluoromethoxy-1,1,2,2-tetrafluoroethane, 1-difluoromethoxy-1,2,2,2-tetrafluoroethane, 2,2,3,3,4,5,5-heptafluorotetrahydrofuran, or 2,2,3,3,4,4,5-heptafluorotetrahydrofuran; 1,1,1,2,2,4,4,4-octafluorobutane and bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane or 2,2,3,3-tetrafluorooxetane; or 1,1,2,2,3,3,4,4-octafluorobutane and methyl tert-butyl ether, bis(fluoromethyl) ether or 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barbara Haviland Minor
  • Patent number: 5653909
    Abstract: A refrigerating machine oil composition suitable for a compressor using a hydrofluorocarbon as a refrigerant, which comprises 100 parts by weight of a polyol ester as a base oil, from 7.0 to 15.0 parts by weight of a phosphate, and from 0.2 to 3.0 parts by weight in total of a 1,2-epoxyalkane and/or a vinylcyclohexene dioxide. The use of the refrigerating machine oil composition improves wear resistance of sliding portions of compressors and is free from the formation of sludges derived from the polyol ester used as a base oil of the oil composition. A rotary compressor using the oil composition is also disclosed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 5, 1997
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Oil Company, Limited
    Inventors: Masayoshi Muraki, Yukiharu Beppu, Shozaburo Konishi, Susumu Kawaguchi, Noboru Masuda, Sou Suzuki
  • Patent number: 5643341
    Abstract: A system and method for the on-site formulation of a personalized hair color maintenance shampoo product. The system and method are used to produce on-site of the salon a hair color maintenance shampoo product which is appropriately tailored to the color and tone of each individual's hair. A database information chart containing formulations of stock colored shampoos is correlated to a pair of sequential axes representative of hair colors and tones. A mixing bottle is provided which is calibrated to the formulations on the chart to obtain a shampoo product tailored to the individual's hair tone and color. The system and method yield a hair color maintenance shampoo personalized to the hair of the individual; eliminates the need to maintain an inordinate stock of pre-mixed hair colored maintenance shampoos and colors; and eliminates the necessity for an individual user to experiment with various stock shampoos.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: July 1, 1997
    Assignee: Artec Systems Group, Inc.
    Inventors: Leland Hirsch, Michael Mazzei
  • Patent number: 5643492
    Abstract: Ternary mixtures of pentafluoroethane, difluoromethane and tetrafluoroethane are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes, and as power cycle working fluids.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: July 1, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark Brandon Shiflett
  • Patent number: 5635100
    Abstract: A nonazeotropic working fluid medium for use in a thermodynamic cycle system, comprising a mixture of compounds and characterized in that one or more vaporization loss/replenishment cycles of each less than about 15% of the total weight of the medium and cumulative up to about 50% of the total weight of the medium result in a total decrease in the coefficient of performance of said medium of no more than about 5%, or a loss in electric power generating efficiency of not more than about 3 percent.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 3, 1997
    Inventor: Chujun Gu
  • Patent number: 5622644
    Abstract: A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane, with the n-butane being at least present in trace amounts and specifically between 1% and up to 4%.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: April 22, 1997
    Assignee: Intercool Energy
    Inventors: Richard Stevenson, Mikhail Boyarsky, Boris V. Yudin, Oleg N. Podcherniev
  • Patent number: 5622645
    Abstract: A nonazeotropic working fluid medium for use in a thermodynamic cycle system, comprising a mixture of compounds and characterized in that one or more vaporization loss/replenishment cycles of each less than about 15% of the total weight of the medium and cumulative up to about 50% of the total weight of the medium result in a total decrease in the coefficient of performance of said medium of no more than about 5%, or a loss in electric power generating efficiency of not more than about 3 percent.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 22, 1997
    Inventor: Chujun Gu
  • Patent number: 5612301
    Abstract: Disclosed are hair conditioning shampoo compositions, containing a detersive surfactant component, a silicone hair conditioning agent, and water and preferably comprising a suspending agent for the silicone conditioning agent. The detersive surfactant component comprises, at least in part, polyethylene glycol glyceryl fatty ester nonionic surfactant. The compositions hereof provide improved silicone deposition.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: March 18, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Everett J. Inman
  • Patent number: 5607617
    Abstract: An electroviscous fluid which consists essentially of a non-conductive liquid and, dispersed therein, anhydrous spherical multilayered particles comprising particles at least whose surfaces are conductive and, formed thereon, a non-conductive layer having a thickness of about 0.1 to 1 .mu.m. The electroviscous fluid is stable at both ambient temperature and elevated temperatures, i.e., up to at least about 200.degree. C. in an applied electric potential with an alternating current or a pulsating direct current.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: March 4, 1997
    Assignee: Asahi Chemical Industry Co., Ltd.
    Inventors: Akio Inoue, Yoshio Suzuki
  • Patent number: 5603861
    Abstract: An electroviscous fluid wherein an electrically insulating fluid is mixed with silica fine particles having esterified surfaces, and a polyhydric alcohol. Thus, it is possible to provide an electroviscous fluid which is excellent in dispersion stability and shelf stability, free from aggregation of particles even under heating conditions and capable of manifesting high electroviscous effect.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: February 18, 1997
    Assignee: Tonen Corporation
    Inventors: Nobuharu Umamori, Tetsuo Miyamoto, Makoto Kanbara, Hirotaka Tomizawa
  • Patent number: 5602088
    Abstract: Disclosed is a solid, floating soap which has a formulation density greater than water or a liquid of like density, and which has an overall physical density less than water or a liquid of like density, and a method of making the floating soap.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Avon Products, Inc.
    Inventors: Richard Tokosh, Linda Dunseath, Joseph Stephenson