Patents by Inventor Otto Siegrist

Otto Siegrist 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).

  • Transfer printing of treated cellulosics
    Patent number: 4088440
    Abstract: Process for dry dyeing and printing of flat textile fabrics containing cellulose fibers with a cross-linking treatment of those fibers in which the fabric is treated with an aqueous solution of cross-linking agents, and auxiliary agents is dyed or printed after pre-drying according to the transfer printing process in dry condition with sublimable dyestuffs and is heated in the presence of an acid or potentially acid catalyst.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: May 9, 1978
    Assignee: Heberlein Textildruck AG
    Inventors: Erwin Leimbacher, Otto Siegrist, Alfred Steiger