Patents by Inventor Grethe C. Nielsen

Grethe C. Nielsen 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).

  • Debranching enzyme product, preparation and use thereof
    Patent number: 4560651
    Abstract: A novel debranching enzyme product with properties in terms of thermostability and pH-optimum comparable to those of glucoamylase is produced by cultivating a strain belonging to the novel taxonomic group Bacillus acidopullulyticus. The novel debranching enzyme is used in conjunction with known saccharifying enzymes for the hydrolysis of starch.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: December 24, 1985
    Assignee: Novo Industri A/S
    Inventors: Grethe C. Nielsen, Ivan V. Diers, Helle Outtrup, Barrie E. Norman
  • 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