Patents by Inventor Rudolf Lehmann

Rudolf Lehmann 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).

  • Treatment of textiles with antimicrobial agents
    Patent number: 4417895
    Abstract: This invention is directed to a process for the antimicrobial treatment of textiles during washing and softening cycles using liquid textile washing agents based upon nonionic tensides and containing fabric-softening quaternary nitrogen compounds, wherein one or more antimicrobially active azole compounds are added to the textile washing agent or to the bath.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: November 29, 1983
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Bayer Aktiengesellschaft
    Inventors: Manfred Hennemann, Hans Andree, Rudolf Lehmann, Harald Schnegelberger, Horst Bellinger
  • Process of producing acid stable protease
    Patent number: 4062732
    Abstract: An acid stable protease whose pH range of 50% of maximum activity is between pH 2.5 and 6.5, produced by culturing a fungus strain of the species Rhizopus rhizopodiformis CBS 227.75 under aerobic conditions in a nutrient medium containing assimilable carbon and nitrogen sources, at a pH between 3 and 7 and at a temperature between 25.degree. C and 50.degree. C, and separating the enzyme produced; as well as the method of production, its use as a foodstuff additive and foodstuffs containing the same.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: December 13, 1977
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Lehmann, Hans F. Pfeiffer, Joachim Schindler, Wolfgang Schreiber