Patents Examined by G. Warren Ivy
  • Process for producing 1,1-dichloro-12,2,2-tetrafluoroethane
    Patent number: 5672785
    Abstract: A process for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane, which comprises isomerizing 1,1,2-trichloro-1,2,2-trifluoroethane to form 1,1,1-trichloro-2,2,2-trifluoroethane, followed by fluorination with hydrofluoric acid.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: September 30, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Shinsuke Morikawa, Shunichi Samejima, Masaru Yoshitake, Shin Tatematsu
  • Process for producing macrolide compounds
    Patent number: 5360917
    Abstract: A process for recovering at least one Antibiotics S541 compound or chemical derivative thereof from solution in an organic solvent, which comprises the steps of contacting the said solution with alumina and adsorbing the compound(s) thereon, eluting the compound(s) and collecting the eluate containing the compounds(s).This method is suitable for the large scale separation of individual S541 compounds or mixtures thereof.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: November 1, 1994
    Assignee: Glaxo Group Limited
    Inventors: Robert Thornton, David T. Eastlick, Kenneth Briggs
  • 3,7 substituted indole and indazole compounds and pharmaceutical compositions containing them
    Patent number: 5272154
    Abstract: 3,7-disubstituted indole derivatives of formula I ##STR1## wherein R.sub.1, R.sub.2, n, X, Y and Z are as defined in the description are useful for the treatment of psychiatric disorders.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: December 21, 1993
    Assignee: Sandoz Ltd.
    Inventors: Arnold K. Dixon, Rudolf K. A. Giger
  • Sizing composition and method of making same and use thereof for sizing textile yarns
    Patent number: 4539366
    Abstract: The invention provides a sizing composition based on water-soluble polymers, intended for sizing warps of textile yarns and a process for obtaining such compositions and for the sizing of textile yarns. More particularly, provided are compositions comprising, 40 to 90% by weight of a polyester-urethane and 10 to 60% by weight of an acrylic and/or vinyl polymer especially suitable for sizing polyester yarns such as polyethylene terephthalate.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: September 3, 1985
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Pierre Gagne, Yvette Girardeau, Bernard Pointud
  • Modified vinyl acetate adhesive compositions containing low temperature fusion aids
    Patent number: 4474915
    Abstract: Modified vinyl acetate aqueous adhesive compositions containing acidic metal salt curing agents, which are suitable for exterior applications where water resistance is required, contain selected solvents as low temperature fusion aids. The adhesives are characterized by their film forming properties at temperatures as low as -1.degree. C., increased closed assembly times of at least up to 40 minutes, improved storage stability, and their satisfactory cold and hot water resistance. They consist essentially of a mixture of (a) an aqueous emulsion of a stabilized vinyl acetate/N-methylol acrylamide polymer; (b) a metal salt curing agent; (c) optionally a cross-linking inhibitor; and (d) 1-7%, based on the polymer solids, of ethylene glycol monomethyl ether acetate, ethylene glycol diacetate, or tetrahydrofurfuryl alcohol as the fusion aid.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: October 2, 1984
    Assignee: National Starch and Chemical Corporation
    Inventor: Ernest J. Grinacoff