Patents by Inventor Daniel Desbiendras

Daniel Desbiendras has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Compositions for dewetting or degreasing solid surfaces
    Patent number: 5514301
    Abstract: The subject of the invention is dewetting or degreasing compositions based on halogenated aliphatic solvents containing in solution at least one mono- or dialkyl phosphate of a fluorinated amine, at least one quaternary ammonium mono- or dialkylphosphate and optionally a quaternary ammonium chloride.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: May 7, 1996
    Assignee: Elf Atochem S.A.
    Inventors: Martine Bil, Jean-Charles Boussaguet, Daniel Desbiendras, Stephane Fouquay, Pascal Michaud
  • Use of (perfluoroalkyl) ethylenes as cleaning or drying agents, and compositions which can be used for this purpose
    Patent number: 5458800
    Abstract: To replace 1,1,2-trichloro-1,2,2-trifluoroethane (F113) in its applications to the cleaning and drying of solid surfaces, the invention propose to employ a (perfluoroalkyl)ethylene of formula:R.sub.f CH.dbd.CH.sub.2in which R.sub.f denotes a linear or branched perfluoroalkyl radical containing from 3 to 6 carbon atoms.In contrast to F113, (perfluoroalkyl)ethylenes are not liable to degrade stratospheric ozone.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: October 17, 1995
    Assignee: Societe Atochem
    Inventors: Daniel Desbiendras, Jean-Jacques Martin, Pascal Michaud
  • Composition based on 1,1,1,3,3-pentafluorobutane and methylene chloride, for the cleaning and/or drying of solid surfaces
    Patent number: 5348681
    Abstract: To replace cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention provides a composition comprising, by weight, 30 to 70% 1,1,1,3,3-pentafluorobutane (F365-mfc) and 70 to 30% methylene chloride. These two compounds form a positive azeotrope (B.p.=33.6.degree. C. at normal pressure).The composition, optionally stabilized, can be used for the cleaning and/or the drying of solid surfaces, in particular for removing flux from printed circuits and for degreasing mechanical components.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: September 20, 1994
    Assignee: Elf Atochem S.A.
    Inventors: Daniel Desbiendras, Pascal Michaud
  • Cleaning composition based on 1,1-dichloro-1-fluoroethane and methyl formate
    Patent number: 5308528
    Abstract: For replacing cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention provides a composition comprising 55 to 80% by weight of 1,1-dichloro-1-fluoroethane (F141b) and 45 to 20% by weight of methyl formate. These two compounds form a positive azeotrope (b.p.=28.4.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: May 3, 1994
    Assignee: Societe Atochem
    Inventors: Daniel Desbiendras, Jean-Jacques Martin, Pascal Michaud
  • Use of (perfluoroalkyl)ethylenes as cleaning or drying agents, and compositions which can be used for this purpose
    Patent number: 5302212
    Abstract: To replace 1,1,2-trichloro-1,2,2-trifluoroethane (F113) in its applications to the cleaning and drying of solid surfaces, the invention propose to employ a (perfluoroalkyl) ethylene of formula:R.sub.f CH.dbd.CH.sub.2in which R.sub.f denotes a linear or branched perfluoroalkyl radical containing from 3 to 6 carbon atoms.In contrast to F113, (perfluoroalkyl)ethylenes are not liable to degrade stratospheric ozone.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: April 12, 1994
    Assignee: Societe Atochem
    Inventors: Daniel Desbiendras, Jean-Jacques Martin, Pascal Michaud
  • Cleaning composition based on 1,1-dichloro-1-fluoroethane, methyl formate and methanol
    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
  • Cleaning composition based on 1,1,1,2,2-pentafluoro-3,3-dichloropropane and methyl tert-butyl ether
    Patent number: 5102563
    Abstract: For replacing cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention provides a composition comprising 55 to 80% by weight of 1,1,1,2,2-pentalfuoro-3,3-dichloropropane (225ca) and 20 to 45% by weight of methyl tert-butyl ether.These two compounds form a negative azeotrope (b.p.=59.9.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: May 10, 1991
    Date of Patent: April 7, 1992
    Assignee: Societe ATOCHEM
    Inventors: Daniel Desbiendras, Jean-Jacques Martin, Pascal Michaud