Patents by Inventor Gunter Kiesslich

Gunter Kiesslich 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 developing silver halide recording materials
    Patent number: 5215873
    Abstract: Process for developing photographic silver halide recording elements containing nonionic fluorinated surfactants using a developer containing at least 15 g/L of dihydroxy benzene compound, 0.15 mole/L of alkali metal sulfate and a wetting agent as described in a concentration of at least 0.1 g/L at a pH of no greater than 11.5. Silver halide recording elements that can be developed are those particularly useful in medical diagnostics with X-rays and in reprography.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: June 1, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gunter Kiesslich, Max E. G. Wadewitz