Patents by Inventor Karl K. Thomsen

Karl K. Thomsen 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).

  • Thermostable (1,3-1,4)-.beta.-glucanase
    Patent number: 5470725
    Abstract: Novel hybrid thermostable (1,3-1,4)-.beta.-glucanases, their use in food manufacturing and feed manufacturing, DNA fragments encoding such glucanases, organisms expressing the DNA fragments and a method for producing the thermostable (1,3-1,4)-.beta.-glucanases. Hybrid fusion genes encoding Bacillus (1,3-1,4)-.beta.-glucanases were constructed, the gene products of which are more thermostable than any (1,3-1,4)-.beta.-glucanase known until now. The hybrid genes were constructed by reciprocal exchanges of the amino-terminal and carboxy-terminal parts of the .beta.-glucanase encoding genes from Bacillus amyloliquefaciens and Bacillus macerans. The resulting thermostable (1,3-1,4)-.beta.-glucanases retain a significant enzymatic activity at temperatures exceeding 65.degree. C. and at pH values below 5.0.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: November 28, 1995
    Assignees: Carlsberg A/S, Akademie der Wissenchaften der DDR
    Inventors: Rainer Borriss, Jurgen Hofemeister, Karl K. Thomsen, Ole Olsen, Dietrich Von Wettstein