Patents by Inventor Karl-Heinz Butzheinen

Karl-Heinz Butzheinen 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).

  • Polyether ketone sewing yarn
    Patent number: 5133178
    Abstract: A polyether ketone sewing yarn comprises a multifilament yarn having an individual filament linear density of from 1.0 to 10 dtex, an elongation at break of from 3 to 30% and a boil shrinkage of less than 10%.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: July 28, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Hermann Buchert, Rainer Neuberg, Hans G. Matthies, Karl-Heinz Butzheinen