Patents by Inventor Jean-Pierre Chavannes

Jean-Pierre Chavannes 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).

  • Cobalt- and nickel-free sealant compositions
    Patent number: 5919297
    Abstract: Aluminium oxide sealant compositions, concentrates, and processes employing the same are described which comprise a combination of certain sulphonated aromatic compounds and condensates of aldehydes and certain other sulphonated aromatic compounds. Unexpected improvements in seal quality are obtained using the compositions of the invention, and in the substantial absence of smut formation.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: July 6, 1999
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Jean Pierre Chavannes
  • 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
  • After treatment of cellulosic textiles dyed with fiber-reactive dyes
    Patent number: 4264324
    Abstract: A process for dyeing or printing with a fibre-reactive dyestuff a substrate consisting of or comprising cellulosic fibres, which process comprises treating the dyed or printed substrate, at a temperature from 20.degree. to 105.degree. C. with an aqueous solution of a polymer containing carboxylic acid groups at least partially neutralized in salt form.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: April 28, 1981
    Assignee: Sandoz Ltd.
    Inventors: Jean-Pierre Chavannes, Rene Fischer, Saverio Fornelli, Francis Palacin