Patents by Inventor Karl Czernik

Karl Czernik 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).

  • Emulsion mixture for color reversal (reflection viewing) material
    Patent number: 4301242
    Abstract: An improved photographic material is provided comprising a mixture of individual emulsions having the same narrow particle size distribution but which are desensitized in a differring degree.
    Type: Grant
    Filed: October 10, 1979
    Date of Patent: November 17, 1981
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Walter Patzold, Karl Czernik
  • Process for the hardening of photographic layers utilizing fast acting hardener and polysaccharide
    Patent number: 4233398
    Abstract: Protein containing photographic layers are hardened by coating with a hardening solution which contains at least one quick-acting hardener which activates carboxyl groups and at least one polysaccharide.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: November 11, 1980
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Fritz Nittel, Karl Czernik, Wolfgang Sauerteig, Wolfgang Himmelmann, Peter Bergthaller