Patents by Inventor Hubert Weinert

Hubert Weinert 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 improving the printing quality of photohardenable reproduction materials
    Patent number: 4539287
    Abstract: Process for improving the printing quality of photohardenable reproduction materials for the production of relief printing plates whose surface has been abraded before imagewise exposure, by filling in the abraded relief with the photohardenable material itself or with a thermoplastic binder.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: September 3, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mario Grossa, Dieter H. Tigler, Hubert Weinert