Patents Examined by Linda D. Skaling
  • Patent number: 5240634
    Abstract: Azeotropic mixtures of 1,1-dichloro-1,2-difluoroethane (HCFC-132c) and cis-1,2-dichloroethylene (c-HCC-1130) with methanol, or ethanol or n-propanol are useful in solvent cleaning applications, as refrigerants, aerosol propellants and blowing agents.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: August 31, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Abid N. Merchant
  • Patent number: 5225099
    Abstract: Azeotrope-like compositions comprising 4-trifluoromethyl-1,1,1,2,2,3,3,5,5,5-decafluoropentane and a second component selected from the group consisting of methanol; ethanol; 1-propanol; 2-propanol; 2-methyl-2-propanol; 2-methyl-2-butanol; n-hexane; isohexane; 2-propanone; and 2-butanone and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: July 6, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Rajat S. Basu, Richard M. Hollister, Kane D. Cook, Michael Van Der Puy
  • Patent number: 5196137
    Abstract: Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC-43-10mee) and trans-1,2-dichloroethylene, cis-1,2-dichloroethylene or 1,1-dichloroethane are useful as cleaning agents, expansion agents for polyolefins and polyurethanes, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: March 23, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Abid N. Merchant
  • Patent number: 5190685
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, ethanol and cyclopentane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: March 2, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Leonard M. Stachura, Ellen L. Swan, Rajat S. Basu
  • Patent number: 5182042
    Abstract: Azeotrope-like compositions of 1,1,1-trifluorohexane and perfluoromethylcyclohexane which are useful in a variety of industrial cleaning applications including defluxing of printed circuit boards.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: January 26, 1993
    Assignee: Allied-Signal Inc.
    Inventor: Michael Van Der Puy
  • Patent number: 5180514
    Abstract: Aqueous peroxide bleaching compositions including organic components such as surfactants, fluorescent whiteners and dyes are effectively stabilized by the addition of a stabilizing system comprising stabilizing effective amounts of a heavy metal chelating or sequestering agent and an aromatic amine free radical scavenging agent. Both agents must be present to achieve maximum stability. The aromatic amine free radical scavenging agent is preferably a primary or secondary aryl amine having at least one hydrogen on the nitrogen of the amine. The stabilizing system stabilizes the organic component as well as the peroxide oxidizing agent.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: January 19, 1993
    Assignee: The Clorox Company
    Inventors: James P. Farr, Daniel T. Carty
  • Patent number: 5152913
    Abstract: For replacing cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention provides a composition comprising 55 to 79.5% by weight of 1,1-dichloro-1-fluoroethane (F141b), 20 to 40% by weight of methyl formate and 0.5 to 5% of methanol. These three compounds form a positive azeotrope (b.p.=28.3.degree. C. at atmospheric pressure).The composition, which may be stabilized, can be used for cleaning solid surfaces, in particular for removing flux from printed circuits and for degreasing mechanical parts.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: October 6, 1992
    Assignee: Societe Atochem
    Inventors: Daniel Desbiendras, Jean-Jacques Martin, Pascal Michaud
  • Patent number: 5145483
    Abstract: 5-Substituted ortho-aminophenols of formula: ##STR1## in which: R.sub.1 denotes a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms or a hydroxyalkyl radical having 1 to 4 carbon atoms; andR.sub.2 denotes, independently of R.sub.1, an alkyl radical having 1 to 4 carbon atoms, an alkoxy radical having 1 to 4 carbon atoms or a benzyl radical;the addition salts with an acid and the phenates, anddyeing composition containing a compound of formula (I) or a salt or a phenate of such a compound.The 5-substituted ortho-aminophenols enable hair to be dyed in a rich spectrum of hues having good durability.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: September 8, 1992
    Assignee: L'Oreal
    Inventors: Alex Junino, Herve Andrean, Gerard Lang
  • Patent number: 5145598
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, nitromethane and ethanol or methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: September 8, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu
  • Patent number: 5137651
    Abstract: Azeotrope-like compositions comprising 1,1,-dichloro-1-fluoroethane, dichlorotrifluoroethane, 1,2-dichloroethylene, and optionally ethanol or methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: August 11, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Leonard M. Stachura, Ellen L. Swan, Peter B. Logsdon, Rajat S. Basu
  • Patent number: 5137538
    Abstract: Oxidation dye composition containing at least one double base in combination with at least one single base and dyeing process making use of it.The invention relates to dye compositions for keratinous fibres, containing:(a) at least one dye precursor belonging to group (A) of single bases chosen from para-phenylenediamines;(b) at least one dye precursor of group (B) of double bases chosen from N,N'-diphenylalkylenediamines; the dye precursors of groups (A) and (B) being chosen so that the intensity of the color on dyed bleached hair (V.sub.B) and the intensity on dyed permanent-waved bleached hair (V.sub.PB) is such that V.sub.B -V.sub.PB =0.+-.0.5, the values of intensity or "value" being determined according to the Munsell notation, the molar ratio of the single bases of group (A) to the double bases of groups (B) being between 3 and 10.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: August 11, 1992
    Assignee: L'Oreal
    Inventors: Annie Madrange, Jean Marie Millequant
  • Patent number: 5135676
    Abstract: Compositions suitable for use in cleaning processes formed of hydrogen-containing fluorochlorohydrocarbons selected from the group of consisting of tetrachloromonofluoroethanes, trichlorodifluoroethanes, dichlorotrifluoroethanes, dichloromonofluoroethanes and dichloropentafluoropropanes or a mixture one or more of these hydrogen-containing fluorochlorohydrocarbons in admixture with partially fluorinated alkanols containing two to four carbon atoms.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: August 4, 1992
    Assignee: Kali-Chemie AG
    Inventors: Hans Buchwald, Andreas Brackmann, Boleslaus Raszkowski
  • Patent number: 5133893
    Abstract: The invention relates to a detergent composition comprising lipases. By inclusion of a certain immunologically defined class of lipases in a detergent composition which comprises as detergent-active material solely an anionic synthetic detergent, and as builder a water-soluble inorganic or organic builder salt, an improved overall detergency is obtained. The builder salt is typically sodium tripolyphosphate or sodium carbonate, and the lipase is typically obtained from certain Pseudomonas or Chromobacter strains.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: July 28, 1992
    Assignee: Lever Brothers Company
    Inventors: David Thom, Ton Swarthoff, Jan Maat
  • Patent number: 5132049
    Abstract: Substituted thiophenes of the general formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom or an aliphatic group containing from 1 to 4 carbon atoms,X represents a hydrogen atom or a fluorine atom,Y represents an at least partially fluorinated aliphatic or aromatic group,m represents an integer equal to or greater than 2, andn represents an integer such that 0.ltoreq.n.ltoreq.7.The invention also relates to the electrically conducting polymers containing recurring units derived from monomers chosen from the substituted thiophenes.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: July 21, 1992
    Assignee: Solvay & Cie (Societe Anonyme)
    Inventors: Robert Garreau, Jean Roncali, Marc Lemaire, Hafsa Korri, Francis Garnier, Etienne Hannecart
  • Patent number: 5126067
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichloroethylene, and optionally an alkanol which are useful in a variety of industrial cleaning applications including defluxing and some of which are also useful as blowing agents in the preparation of polyurethane foams.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: June 30, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Richard M. Hollister
  • Patent number: 5124143
    Abstract: The toothpaste for preventative oral hygiene contains a mixture of synthetically prepared precipitated silicic acid and perlite in addition to a solvent as cleaning body.A mixture consisting of glycerol (86%) and water is used as solvent.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: June 23, 1992
    Assignee: Degussa AG
    Inventors: Hans R. Muhlemann, Karl-Hans Muller, Matthias Neumuller
  • Patent number: 5124064
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkane having 5 or 6 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 23, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Patent number: 5124063
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; methanol; and alkane having 5 or 6 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: June 23, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Patent number: 5122294
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkene having 5 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: June 16, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Patent number: 5122157
    Abstract: A process for bleaching domestic laundry in a household wash cycle, comprising prewashing the laundry in an alkaline bath with a pH value between 9 and 13 and at a temperature between about 40.degree. C. and 70.degree. C. in the presence of at least one peroxide bleaching agent and an uncomplexed barium, said barium being present in an amount between about 0.5.times.10.sup.-3 and 250.times.10.sup.-3 gram-atoms per kg of bath.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: June 16, 1992
    Assignee: Atochem
    Inventors: Bernard Dubreux, Yann Dugenet