Patents Examined by Christine A. Skane
  • Octamethylcyclotetrasiloxane azeotropes
    Patent number: 5492647
    Abstract: Binary azeotropes and azeotrope-like compositions contain n-butyl lactate, n-propoxypropanol, 1-butoxy-2-propanol, 1-butoxy-2-ethanol, or 4-methylcyclohexanol, with octamethylcyclotetrasiloxane, and are useful for cleaning, rinsing, or drying.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: February 20, 1996
    Assignee: Dow Corning Corporation
    Inventors: Ora L. Flaningam, Dwight E. Williams
  • Semiconductor compound
    Patent number: 5490953
    Abstract: Novel compound semiconductors are of the general formula, X.sub.5 YZ.sub.4, wherein X is a member selected from the group consisting of Cu, Ag and mixtures thereof, Y is a member selected from the group consisting of Al, Ga, Tl and mixtures thereof, and Z is a member selected from the group consisting of Se, S, Te and mixtures thereof. Typical of the compound semiconductors are Cu.sub.5 AlSe.sub.4 and Ag.sub.4 AlSe.sub.4. These compound semiconductors are especially useful for making blue to UV light-emitting devices which include n-type and p-type compound semiconductor layers made of the above compound semiconductors.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: February 13, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Yoshio Morita
  • Process for making detergent granules by neutralization of sulphonic acids
    Patent number: 5486317
    Abstract: A process for making a detergent particle comprises neutralization of the acid form of an anionic surfactant in a high shear mixer by a stoichiometric excess of finely divided particulate neutralizing agent having an average particle size of less than 5 .mu.m. A free-flowing detergent composition is made with the process.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: January 23, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Andrew Dorset, Olivier Paquatte
  • Detergent compositions having improved percarbonate bleach stability
    Patent number: 5482642
    Abstract: Detergent compositions containing sodium percarbonate bleach are provided in which at least 60% of the originally added percarbonate remains after 28 days storage at 32.degree. C. and 80.degree. RH. The compositions contain at least one multi-ingredient component and have a density in excess of 650 g/liter, a content of Iron, Manganese and Copper less than 25 ppm, an Equilibrium Relative Humidity at 32.degree. C. of less than 30% and preferably a sodium sulfate content of less than 2.5% by weight.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: January 9, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Joseph T. H. Agar, David E. Holt
  • Electrorheological fluid compositions containing alkylmethylsiloxanes
    Patent number: 5480573
    Abstract: The present invention relates to an electrorheological fluid comprising solid particles, an alkylmethylsiloxane compound, and an organofluoro compound. Preferred solid particles include zeolite and sulfate ionomers of aminofunctional siloxanes. The ER fluids of the present invention are characterized by improved dispersion stability, enhanced lubricity, and high yield stresses.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: January 2, 1996
    Assignee: Dow Corning Corporation
    Inventors: Loren D. Durfee, Randall G. Schmidt
  • Encapsulates containing surfactant for improved release and dissolution rates
    Patent number: 5480577
    Abstract: Wax-encapsulated particles having a core particle or an aggregate of core particles selected from the group of an organic peroxy acid, a diacyl peroxide, an inorganic peroxygen compound, a bleach catalyst, a peroxygen bleach precursor and mixtures thereof together with 0.01% to about 5% by weight of a surfactant. The resulting particles exhibit release rates from their capsules and dissolution rates comparable to uncoated core materials.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: January 2, 1996
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: John R. Nicholson, David J. Lang
  • Acidic cleaning composition for removing burnt starch from cold metal press heads
    Patent number: 5476609
    Abstract: A chemical composition for removing burnt starch from cold metal press heads used in laundries and dry cleaning establishments for pressing starched garments.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: December 19, 1995
    Inventors: William S. Wilkins, Jr., Robert S. Neuhaus
  • Phosphate containing powered automatic dishwashing composition with enzymes
    Patent number: 5474699
    Abstract: A powdered dishwashing composition containing a mixture of protease enzyme and an amylase enzymes have been found to be very useful in the cleaning of dishware. The compositions can contain a nonionic surfactants, phosphate builder salt, and an alkali metal silicate and optionally a bleaching agent.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: December 12, 1995
    Assignee: Colgate-Palmolive Co.
    Inventors: Fahim U. Ahmed, Julien Drapier, Patrick Durbut
  • Erasable hair dyeing process
    Patent number: 5474578
    Abstract: A hair fiber having a first color is contacted with a dye having the formula I, formula II, formula III or a mixture thereof whereby the fiber has imparted to it a second color, upon subsequent contact with alkaline peroxide the visual appearance of the first color is restored to the fiber.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: December 12, 1995
    Assignee: Clairol, Inc.
    Inventors: Alexander C. Chan, Alice A. Mayer, Jia-Shen Wang, Gottfried Wenke, Mu-Ill Lim
  • Electrorheological fluid containing carbonaceous particles
    Patent number: 5474697
    Abstract: An electrorheological fluid comprising an electrically insulating liquid and oxidation-treated carbonaceous particles dispersed therein and an electrorheological fluid comprising an electrically insulating liquid and a carbonaceous particles having a shape anisotropy, 0.02 to 10,000 .mu.m in length, 0.01 to 500 .mu.m in diameter and 2 to 1,000,000 in aspect ratio have a high electrorheological effect, less current passage and no short circuit, though it is a water-free system.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: December 12, 1995
    Assignee: Nippon Oil Company, Ltd
    Inventors: Makoto Sasaki, Hisatake Sato, Osamu Kato
  • Process for refrigeration using 1,1,1,2-tetrafluoro-2-(difluoromethoxy) ethane or 1,1,2,2-tetrafluoro-2-(difluoromethoxy)ethane
    Patent number: 5474696
    Abstract: Producing refrigeration by evaporating the fluorocarbon refrigerants 1,1,1,2- and 1,1,2,2-tetrafluoro-2-(difluoromethoxy)ethane in the vicinity of a body to be cooled.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: December 12, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donna M. Patron, Allen C. Sievert
  • Liquid detergents with an aryl acid for inhibition of proteolytic enzyme
    Patent number: 5472628
    Abstract: Included is a liquid detergent composition comprising detersive surfactant, proteolytic enzyme, a detergent-compatible second enzyme, and an aryl boronic acid of the structure: ##STR1## where X is selected from C.sub.1 -C.sub.6 alkyl, substituted C.sub.1 -C.sub.6 alkyl, aryl, substituted aryl, hydroxyl, hydroxyl derivative, amine, C.sub.1 -C.sub.6 alkylated amine, amine derivative, halogen, nitro, thiol, thiol derivative, aldehyde, acid, acid salt, ester, sulfonate or phosphonate; each Y is independently selected from hydrogen, C.sub.1 -C.sub.6 alkyl, substituted C.sub.1 -C.sub.6 alkyl, aryl, substituted aryl, hydroxyl, hydroxyl derivative, halogen, amine, alkylated amine, amine derivative, nitro, thiol, thiol derivative, aldehyde, acid, ester, sulfonate or phosphonate; and n is 0 to 4.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: December 5, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Rajan K. Panandiker, Christiaan A. J. K. Thoen, Pierre M. A. Lenoir, Dwight M. Peterson, James E. Thompson
  • Working fluid containing chlorotetrafluoroethane
    Patent number: 5470496
    Abstract: A working fluid containing chlorotetrafluoroethane and at least two fluorinated hydrocarbons having a boiling point of not higher than -40.degree. C. under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist of one or two carbon atoms, hydrogen atoms and fluorine atoms, which has very small influence on the ozone layer in the stratosphere and decreased flammability and is suitable as a substitute working fluid for chlorodifluoromethane.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: November 28, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Yoshida, Masami Funakura, Kazuo Nakatani, Minoru Tagashira
  • Refrigeration working fluid compositions containing trifluoroethane and neopentyl glycol or trimethylolpropane esters of C.sub.7 and C.sub.9 acids
    Patent number: 5470497
    Abstract: There are disclosed refrigeration working fluid compositions comprising 1,1,1-trifluoroethane refrigerant and either a neopentylglycol ester of 3,5,5-trimethylhexanoic acid or a trimethylolpropane ester of a mixture of 65 wt. % 3,5,5-trimethylhexanoic acid, 22.2 wt. % n-heptanoic acid and 12.8 wt. % methylhexanoic acid. The esters exhibit suitable viscosity ranges and miscibility with the refrigerant over a broad compositional range.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: November 28, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard H. Schlosberg, Carolyn B. Duncan, Martin A. Krevalis, Jr.
  • Refrigerator oil composition containing phosphate ester additives for fluoroalkane refrigerant
    Patent number: 5464550
    Abstract: A refrigerator oil composition for a fluoroalkane refrigerant comprises a base oil composed principally of at least one oxygen-containing compound and, based on the total weight of the composition, [I] 0.5-5.0 wt. % of a phosphate ester represented by the formula (A), and [II] (a) 0.1-5.0 wt. % of a halogenated phosphate ester represented by the formula (B) and/or (b) 0.01-2.0 wt. % of an acid phosphate ester represented by the formula (C), an amine salt thereof or a combination of both the acid phosphate ester and the amine salt. ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 represent a C.sub.1-18 hydrocarbon or oxygen-containing hydrocarbon group; R.sup.4, R.sup.5 and R.sup.6 represent a C.sub.1-18 hydrocarbon or oxygen-containing hydrocarbon group or a group similar to the C.sub.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: November 7, 1995
    Assignee: Nippon Oil Company, Limited
    Inventors: Umekichi Sasaki, Hiroshi Hasegawa, Yuji Shimomura
  • Electroviscous fluid based on polyether acrylates as disperse phase
    Patent number: 5462687
    Abstract: In an electroviscous liquid comprising a non-aqueous liquid as a dispersion medium, a dispersed particulate polymer and a dispersant, the improvement wherein the polymer contains polyether and (meth)acrylate units.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: October 31, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Podszun, Robert Bloodworth, Gunter Oppermann
  • Softening and purification of molasses or syrup
    Patent number: 5454875
    Abstract: A method is disclosed for softening and purifying molasses or syrup to obtain a clarified syrup that can then easily be handled by conventional ion-exclusion or other techniques for recovery of sugar. The process comprises steps that can be performed at ambient temperature. The molasses or syrup is carbonated at high pH, followed by adding organic solvent(s) such as ethanol. The sludge and liquid phases are separated. The solvent is then recovered, leaving a liquid phase comprising a soft and very clear sugar-containing liquid. The liquid phase may then be used in known systems for sugar recovery such as ion-exclusion chromatographic systems. Organic acids such as aconitic acid may be recovered from the sludge residue.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: October 3, 1995
    Assignee: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventor: Stephen J. Clarke
  • Stabilized chlorine-containing refrigeration compositions
    Patent number: 5454966
    Abstract: The present invention provides a compositions for use in compression refrigeration and air-conditioning which substantially reduce the occurrence of the foregoing problem. The compositions comprise: (a) chlorine-containing refrigerant selected from the group consisting of hydrochlorocarbons, chlorofluorocarbons, and hydrochlorofluorocarbons, (b) hydrogen-contributing lubricant; and (c) composition comprising: (1) at least one phenol and (2) at least one aromatic epoxide or fluorinated alkyl epoxide wherein the composition (c) substantially reduces the removal of chlorine or chlorine and fluorine from the chlorine-containing refrigerant (a) and replacement of the halogen with hydrogen from the hydrogen-contributing lubricant (b).
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 3, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Raymond H. P. Thomas, Ruth H.-H. Chen, Kenneth Harris
  • Coated precursor powder for oxide superdonductors
    Patent number: 5455223
    Abstract: In one aspect, the present invention is a precursor powder to an oxide superconductor, namely a coated particle comprising a metal oxide particle core (including a mixed metal oxide, e.g., BSCCO-2212 or YBCO-123) on which is deposited a secondary metal oxide coating (e.g., M.sub.n CuO.sub.x or CuO). The metal oxide particle and secondary metal oxide coating together comprise metallic elements having a stoichiometry appropriate for the formation of a desired oxide superconductor. The metal oxide reacts with the secondary metal oxide under suitable conditions (e.g., heating) to form the desired oxide superconductor (e.g., BSCCO-2223 or YBCO-124). In another aspect, the invention is a method for preparing such a coated particle, comprising: preparing a precursor solution comprising a metal .mu.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: October 3, 1995
    Assignee: American Superconductor Corporation
    Inventors: Martin Rupich, Gilbert N. Riley, Jr., William L. Carter
  • Latent heat storage material containing Na.sub.2 SO.sub.4.10H.sub.2 O, NH.sub.4 Cl, NaCl and (NH.sub.4).sub.2 SO.sub.4
    Patent number: 5453213
    Abstract: The present invention relates to a latent heat storage material composition comprising 70 to 90 wt % of sodium sulfate decahydrate, 3 to 17 wt % of ammonium chloride, 1 to 13 w % of sodium chloride and 1 to 13 wt % of ammonium sulfate. The composition can be frozen with cooled water of 4.degree. to 5.degree. C., has a melting point of 10.degree. to 13.degree. C., has large latent heat at the melting point and exhibits excellent long-term performance.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: September 26, 1995
    Assignees: Mitsubishi Petrochemical Co., Ltd., Mitsubishi Petrochemical Engineering Co., Ltd.
    Inventors: Hiroyuki Kakiuchi, Masahiro Oka