Patents by Inventor Fritz Novotny

Fritz Novotny 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).

  • Imparting water-repellency with polysiloxanes containing carboxyl groups
    Patent number: 6379751
    Abstract: The invention relates to polysiloxanes containing carboxyl groups that are useful for imparting water-repellency to substrates, a process for their preparation, a water-repellent system containing such polysiloxanes, and a process for the production of hydrophobic substrates.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: April 30, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Schäfer, Günter Sackmann, Jürgen Reiners, Tillmann Hassel, Manfred Schnee, Fritz Novotny
  • Process for tanning leather
    Patent number: 5820634
    Abstract: Bisulphite-blocked, polyether-modified polyisocyanates are outstandingly suitable, in combination with mineral tanning agents, for the tanning of leather.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: October 13, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harro Traubel, Fritz Novotny, Helmut Reiff
  • Use of oligourethanes as formulating agents for aqueous pigment preparations
    Patent number: 5770651
    Abstract: Oligourethanes containing both anionic and cationic groups may be used as formulating agents for superior aqueous pigment preparations.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: June 23, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harro Traubel, Hans-Werner Muller, Fritz Novotny
  • Process for dying leather with pigments and cationic binders
    Patent number: 5468257
    Abstract: Specific cationic polymers having hydrophobic side chains are highly suitable as binders for pigments for the dyeing of leather.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: November 21, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Probst, Fritz Novotny, Harro Traubel, Ludger Heiliger
  • Oligourethanes as forming agents for non-aqueous pigment preparations
    Patent number: 5268416
    Abstract: Oligourethanes containing both anionic and cationic groups may be used as forming agents for superior non-aqueous pigment preparations.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: December 7, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harro Traubel, Hans-Werner Muller, Fritz Novotny