Patents by Inventor Ingeborg Holl

Ingeborg Holl 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).

  • Process for concentrating yellow silver sols
    Patent number: 4429038
    Abstract: A yellow silver sol containing a binder is concentrated by flocculation in the presence of a calcium-free gelatin, a water-soluble chloride being added to the flocculation and/or after the redispersion.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: January 31, 1984
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Franz Moll, Ingeborg Holl