Patents by Inventor Henricus Slaats

Henricus Slaats 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).

  • Softening and waterproofing retanning agents
    Patent number: 5472741
    Abstract: Copolymers containing incorporated radicals of long-chain alcohols and neutralized carboxyl groups are suitable as retanning agents for leather. They result in an excellent combination of water repellency, softness and grain tightness.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: December 5, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Sackmann, Bruno Bomer, Joachim Kochta, Henricus Slaats
  • Process for retanning mineral tanned leathers with aromatic sulphonic acids
    Patent number: 5352241
    Abstract: Process for retanning mineral-tanned leathers, characterised in that the retanning agents used are sulphonic acids and/or salts thereof of the general formula ##STR1## wherein R represents hydrogen, --CH.sub.3 or the radicals ##STR2## X represents hydrogen, an alkali metal ion, especially sodium, potassium or lithium ion, or an ammonium ion andn represents 1, 2, 3 or 4.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: October 4, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Franz Schade, Wilhelm Krummel, Bernhard Wehling, Henricus Slaats