Patents by Inventor Hans-Georg Karmann

Hans-Georg Karmann 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).

  • Disperse dyeing of polyester with benzalketo derivatives as carriers: benzalacetone, methyl cinnamate etc.
    Patent number: 4229172
    Abstract: Polyester or polyester blend textile material is dyed with a disperse dyestuff in the presence of a benzalketo derivative as a dyeing carrier.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 21, 1980
    Assignee: Sandoz Ltd.
    Inventors: Hans-Peter Baumann, Hans-Georg Karmann, Achim Wiedemann
  • Aromatic carboxylic acid esters and amides as fixing agents
    Patent number: 4060387
    Abstract: The present invention relates to methods of dyeing and printing of textile materials and specifically to the use of fixing agents in such methods. In particular, the present invention relates to the use of aromatic carboxylic acid esters and amides as fixing agents in the dyeing and printing of textile materials.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: November 29, 1977
    Assignee: Sandoz Ltd.
    Inventors: Hans-Peter Baumann, Hans-Georg Karmann
  • Aromatic carboxylic acid esters and amides as fixing agents
    Patent number: 3950419
    Abstract: The present invention relates to methods of dyeing and printing of textile materials and specifically to the use of fixing agents in such methods. In particular, the present invention relates to the use of aromatic carboxylic acid esters and amides as fixing agents in the dyeing and printing of textile materials.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: April 13, 1976
    Assignee: Sandoz Ltd., (Sandoz AG)
    Inventors: Hans-Peter Baumann, Hans-Georg Karmann