Patents by Inventor Karl Buser

Karl Buser 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).

  • Phosphate-free cleaning compositions
    Patent number: 4388205
    Abstract: A liquid phosphate-free wash additive composition comprises an aqueous solution of the following active compounds:(A) 100 parts by weight of a polycarboxylic acid in the salt form(B) 2 to 400 parts by weight of an alkali metal gluconate or glucoheptonate(C) 20 to 700 parts by weight of an alkali metal metasilicate, and(D) 10 to 150 parts by weight of an alkali metal hydroxide.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: June 14, 1983
    Assignee: Sandoz Ltd.
    Inventors: Hans Stettler, Karl Buser, Jean-Pierre Chavannes