Patents by Inventor Maria R. Tang

Maria R. Tang 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).

  • Enzymes for detergents
    Patent number: 6197589
    Abstract: This invention relates to proteases with improved application properties in cleaners and detergents. The improvement's achieved by substituting positively charged or uncharged amino acids in the substrate binding region of the wild type subtilisin protease.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: March 6, 2001
    Assignee: Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Karl-Heinz Maurer, Albrecht Weiss, Christian G. Paech, Dean W. Goddette, Teresa M. Christianson, Maria R. Tang, Charles Ronald Wilson
  • Expression systems for commercial production of cellulase and xylanase in Bacillus subtilis and Bacillus licheniformis
    Patent number: 5888800
    Abstract: Increased production of a heterologous cellulase is achieved by transforming Bacillus subtilis and Bacillus licheniformis with genetic constructs containing a Bacillus licheniformis ATCC 53926 protease promoter and signal sequence to express alkalophilic cellulase genes.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: March 30, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: C. Ron Wilson, Maria R. Tang, Terri Christianson, Karl-Heinz Maurer, Albrecht Weiss
  • Enzymes for detergents
    Patent number: 5801039
    Abstract: This invention relates to proteases with improved application properties in cleaners and detergents. The improvement's achieved by substituting positively charged or uncharged amino acids in the substrate binding region of the wild type subtilisin protease.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: September 1, 1998
    Assignee: Cognis Gesellschaft fuer Bio und Umwelttechnologie mbH
    Inventors: Karl-Heinz Maurer, Albrecht Weiss, Christian G. Paech, Dean W. Goddette, Teresa M. Christianson, Maria R. Tang, Charles Ronald Wilson
  • Expression systems for the production of target proteins in bacillus
    Patent number: 5646044
    Abstract: This invention discloses an expression system which is useful in industrial Bacilli to produce target proteins which include, but are not limited to, alkaline proteases, amylases, cellulases, lipases or other hydrolyases which are normally excreted outside of the host cell.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: July 8, 1997
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Charles R. Wilson, Maria R. Tang, Harald Berger, Teresa M. Christianson, Dieter Hansen