Patents Examined by L. Lieberman
  • Rinse aid compositions containing alkyl polycycloside and a ketone antifoaming agent
    Patent number: 5366654
    Abstract: Rinse aid compositions based on alkyl polyglycoside surfactants attack plastics, in particular polycarbonate, to a much lesser degree than rinse aid compositions based on other types of nonionic surfactants. It is preferred that the compositions also comprise an anti-foam agent, preferably a ketone having more than 25 carbon atoms.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: November 22, 1994
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: Guido C. Van Den Brom, Leendert Los
  • Marking implement
    Patent number: D300331
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: March 21, 1989
    Assignee: Kreuzer Produktion + Vertrieb GmbH & Co. KG
    Inventor: Gunther Horntrich
  • Coloring instrument
    Patent number: D300640
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: April 11, 1989
    Inventors: Ralph Coletta, Joseph M. LaGuardia
  • Combined mechanical pencil and scale therefor
    Patent number: D301043
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: May 9, 1989
    Inventor: Ross M. Castle
  • Marking pen
    Patent number: D302175
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: July 11, 1989
    Assignee: Shachihata Industrial Co., Ltd.
    Inventors: Akira Ohashi, Keiichi Mizutani
  • Tennis racket
    Patent number: D315585
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: March 19, 1991
    Inventor: Siegfried Kuebler