Patents Examined by Kathleen Markowski
  • Patent number: 5009814
    Abstract: N-polyhydroxyalkyl fatty acid amides are used as thickening agents for liquid aqueous surfactant systems. Compounds of formula ##STR1## where R.sub.1 is an alkyl group; R.sub.2 is hydrogen, an alkyl group, or an alkylene oxide group; and X is a polyhydroxyalkyl group, are used as thickeners. The thickeners are particularly useful in liquid surfactant systems which contain paraffinsulfonate.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: April 23, 1991
    Assignee: Huls Aktiengesellschaft
    Inventors: Heike Kelkenberg, Wulf Ruback, Klaus Engel
  • Patent number: 4994201
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, methanol and cyclopentane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: February 19, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Leonard M. Stachura, Peter B. Logsdon, Ellen L. Swan, Rajat S. Basu
  • Patent number: 4978467
    Abstract: Azeotrope-like compositions of pentafluoroethane and difluoromethane useful for heating and cooling applications.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: December 18, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ian R. Shankland, Earl A. E. Lund
  • Patent number: 4970013
    Abstract: Azeotropic mixtures of 2,3-dichloro-1,1,1,3,3-pentafluoropropane and methanol, the azeotropic mixtures being useful in solvent cleaning applications.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: November 13, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Abid N. Merchant
  • Patent number: 4968446
    Abstract: Thixotropic aqueous liquid automatic dishwashing detergent composition with improved anti-filming and anti-spotting properties and method of using the detergent composition. The detergent composition comprises alumina or titanium dioxide anti-filming agent, polyacrylate polymer anti-spotting agent, inorganic builder salts, chlorine bleach, bleach-stable detergent and a thixotropic thickener. The compositions provide reduced filming and spotting on dishware, glassware, china and the like, particularly in hard water, and remain stable against phase separation.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: November 6, 1990
    Assignee: Colgate-Palmolive Co.
    Inventors: Fahim U. Ahmed, Charles E. Buck
  • Patent number: 4968445
    Abstract: Thixotropic aqueous liquid automatic dishwashing detergent composition with improved anti-filming properties and method of using the detergent composition. The detergent composition comprises silica anti-filming agent, inorganic builder salts, chlorine bleach, bleach-stable detergent and a thixotropic thickener. The compositions provide reduced filming on dishware, glassware, china and the like, particularly in hard water, and remain stable against phase separation.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: November 6, 1990
    Assignee: Colgate-Palmolive Co.
    Inventors: Fahim U. Ahmed, Charles E. Buck
  • Patent number: 4965011
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, and nitromethane are stable and have utility as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: October 23, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Joel E. Rodgers
  • Patent number: 4963274
    Abstract: A fabric conditioner comprising 18 to 50% by weight of a mixture of at least two quaternary ammonium salt components (A) and (B) with the remainder of the conditioner being water and auxiliary agents.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: October 16, 1990
    Assignee: Huels Aktiengesellschaft
    Inventors: Wulf Ruback, Jan Schut, Werner Friedrich, Heinz Riemer, Hauke Steinhardt
  • Patent number: 4961870
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane; 1,2-dichloroethylene; and alkanol having 3 to 7 carbon atoms have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing a printed circuit boards.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: October 9, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Kane D. Cook, Chien C. Li, Rajat S. Basu, David P. Wilson
  • Patent number: 4961869
    Abstract: Azeotropic mixtures of 2,3-dichloro-1,1,1,3,3-pentafluoropropane (HCFC-225da) and trans-1,2-dichloroethylene (HCC-1130) with methanol, the azeotropic mixtures being useful in solvent cleaning applications.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: October 9, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael E. Eggers, Abid N. Merchant
  • Patent number: 4960535
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Leonard M. Stachura, Ellen L. Swan, Rajat S. Basu
  • Patent number: 4956115
    Abstract: Aqueous stripper compositions comprising aqueous emulsions of trioxane have been found to be effective for stripping coatings from surfaces. The composition typically contains water, trioxane, a surfactant and optionally a mixture of cosolvents comprising an aliphatic alcohol, an ester of an aliphatic carboxylic acid and an aromatic hydrocarbon or minimally hetero-substituted derivative thereof. The amount of the organic cosolvent is limited to about 30 wt. % to provide a stripper composition which is less volatile and more biodegradable than conventional stripper compositions.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: September 11, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Michael R. Van De Mark
  • Patent number: 4954284
    Abstract: Azeotrope-like compositions comprising ethylene oxide and dichlorotrifluoroethane isomers or mixtures thereof are novel constant boiling compositions which are useful as sterilizing gases.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: September 4, 1990
    Assignee: Allied-Signal Inc.
    Inventors: James A. Batt, Robert G. Richard, Ian R. Shankland, David P. Wilson
  • Patent number: 4948526
    Abstract: Azeotrope-like compositions of penetafluorodimethyl ether and monochlorodifluoromethane useful for heating and cooling applications.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: August 14, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Barbara R. Fellows, Earl A. E. Lund, Ian R. Shankland
  • Patent number: 4944892
    Abstract: A non-film forming, aqueous composition is disclosed for cleaning and for killing and inhibiting the regrowth of fungi and algae on a solid surface. The composition comprises a water-insoluble compound selected from the group consisting of a fungicide, an algicide and a mixture thereof dispersed in the composition, a detergent, a thickener, an oxidizing agent and water. Also disclosed is the composition in a two package form in which the oxidizing agent and at least a portion of the water are in one package, and the fungicide, algicide or mixture thereof, the detergent, the thickener, and optionally a portion of the water are in another package.Also disclosed is a process for cleaning a solid surface with the aqueous composition.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: July 31, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Amy Z. Leathers, S. Thomas Greer
  • Patent number: 4943388
    Abstract: Azeotrope-like compositions comprising pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane are stable and have utility as refrigerants for heating and cooling.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: July 24, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ian R. Shankland, Robert G. Richard, Earl A. E. Lund
  • Patent number: 4938889
    Abstract: A granular, storable bleach mixture suitable for addition to a detergent composition or to a wash liquor comprising a mixture of (a) from 5 to 35% by weight sodium perborate, preferably as monohydrate, (b) from 5 to 30% by weight tetra-acetyl ethylene-diamine and (c) from 90 to 50% by weight of a carrier material. The latter comprises a salt optionally containing water of crystallization or urea or mixtures thereof with anhydrous sodium sulfate, wherein the salt containing water of crystallization should not undergo any phase transformation between 1.degree. C. and 45.degree. C. In addition, the mixture may contain up to 15% of detergent constituents, such as surfactant and sequestering agent. The average particle size of the individual component is from 0.1 to 0.6 mm, less than 1% by weight being larger than 1.6 mm in size.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: July 3, 1990
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Heinz-Manfred Wilsberg, Rolf Puchta, Jochen Jacobs
  • Patent number: 4935175
    Abstract: A mold-cleaning composition and sheet comprising an uncured rubber composition comprising an uncured rubber and a curing agent, and at least one removal aid selected from imidazoles and imidazolines, and a method for cleaning a mold using the mold-cleaning sheet, are disclosed. The mold-cleaining sheet is suitably used to clean molding surfaces of a mold or to remove contaminants such as burr formed at peripheries thereof in the continuous production of semiconductor devices by transfer molding.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: June 19, 1990
    Assignee: Nitto Electric Industrial Co., Ltd.
    Inventors: Toshihiko Kitaura, Akio Nakamura, Masayuki Sakamoto, Kouichi Takashima, Kiyotaka Hirakawa, Matao Mizota
  • Patent number: 4931201
    Abstract: A non-woven, fabric-like multifunctional cloth for household cleaning with high absorption capacity, minimum tearing resistance and a unique scrubbing and wiping efficacy. This cloth comprises a homogeneous mixture of wood pulp fibers and polypropylene microfibers impregnated with an all purpose cleaner.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: June 5, 1990
    Assignee: Colgate-Palmolive Company
    Inventor: Jean Julemont
  • Patent number: 4904407
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and 1-chloropropane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including the defluxing of printed circuit boards.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: February 27, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, David P. Wilson, Earl A. E. Lund