Patents by Inventor Bernhard Morcher

Bernhard Morcher 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).

  • Photographic recording material
    Patent number: 5006457
    Abstract: The invention relates to a photographic recording material comprising a layer support and, arranged thereon, at least one photosensitive silver halide emulsion layer which contains an antifogging agent corresponding to formula (I) ##STR1## in which A, R.sub.1 and R.sub.2 are as defined in the specification. The antifogging agents according to the invention reduce fogging without significantly affecting gradation and improve the staility of the photographic material in storage.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: April 9, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans Vetter, Hans hlschlager, Heinrich Odenwalder, Bernhard Morcher, Friedhelm Sommer, Lothar Rosenhahn
  • Method of preventing the formation of contact spots on photographic materials
    Patent number: 4248963
    Abstract: In a process for preventing the contact spots formed by contact of the back coating of photographic material with the emulsion side an aqueous polymer dispersion obtained by polymerization of halogen-free compounds and polyvinyl alcohol or partially acetylated polyvinyl alcohol in the presence of an anionic emulsifier are added to the casting composition applied as outermost back coating and/or as uppermost layer.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: February 3, 1981
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Gunter Kolb, Bernhard Morcher
  • Process for the preparation of matted photographic layers containing gelatine
    Patent number: 4148943
    Abstract: In a process for the preparation of matted photographic layers gelatine particles which are dispersed in a water-in-oil emulsion are hardened, separated from the emulsion, redispersed in water, added to the layer which is required to be matted, and the casting composition is applied to a substrate and dried.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: April 10, 1979
    Assignee: AGFA-Gevaert AG
    Inventors: Bernhard Morcher, Rolf Bruck