Patents by Inventor Hans D. Opitz

Hans D. Opitz 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 resist printing cellulose fibres with reactive or developing dyes
    Patent number: 4412837
    Abstract: Process for imprinting textiles made from cellulose fibers or cellulose fibers mixed with other fibers employing reactive and/or developing dyes according to the etch-resist process using printing dyes which contain per 1000 parts by weight, 10 to 100 parts by weight of one or more of the following compounds: butyl glycol, butyl diglycol, butyl triglycol, 1,2-butane diol, 2,5-hexane diol, and diethylene glycol monoethylether. This results in essentially complete penetration.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: November 1, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Blum, Hans D. Opitz