Patents by Inventor Birgit Mueller

Birgit Mueller 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).

  • Developer for preparing printing forms and process therefor
    Patent number: 4716098
    Abstract: A developer for negative-working reproduction layers and process therefor. The developer includes water, an organic solvent, a surface-active agent, an alkaline agent, a complexing agent, a buffer substance, an emulsifier and an n-alkanoic compound. Use of the developer suppresses speck and fibril formation in the developing process, and can be used in reproduction layers which optionally contain a binder.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: December 29, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Mack, Birgit Mueller, Guenter Jung, Werner Frass