Patents by Inventor Edy Roche

Edy Roche 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 hardening photographic layers with carbodiimide compounds containing sulphobetaine groups
    Patent number: 4043818
    Abstract: As quick-acting hardeners for protein-containing photographic layers, which do not adversely affect the sensitizers and color couplers in the photographic materials, carbodiimide compounds containing sulphobetaine groups are used.
    Type: Grant
    Filed: August 12, 1975
    Date of Patent: August 23, 1977
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Wolfgang Himmelmann, Erwin Ranz, Edy Roche