Patents by Inventor Hans Schiff

Hans Schiff 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).

  • Protease product of reduced allergenicity
    Patent number: 4266031
    Abstract: A novel protease product suitable for admixture to washing compositions and exhibiting substantially attenuated allergenic properties is prepared by cultivating strains of Bacillus licheniformis which have been mutated to block their synthesis of protease other than Subtilopeptidase A (subtilisin). The commercial Bacillus licheniformis derived protease products are mixtures of subtilisin and a non-serine protease of lower stability and greater allergenicity than subtilisin.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: May 5, 1981
    Assignee: Novo Industri A/S
    Inventors: Peter Tang, Grethe C. Nielsen, Keith Gibson, Knud Aunstrup, Hans Schiff