Patents by Inventor Reiko Ishida

Reiko Ishida 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).

  • Lipase, microorganisms producing the lipase, method of producing the lipase and use of the lipase
    Patent number: 5827718
    Abstract: Bacteria belonging to the genus Pseudomonas, alkaline lipase produced by the bacteria and having the following properties, a method of producing the lipase, and detergent compositions containing the lipase:(1) Operating pH and optimum pHan operating pH is in the range of from 3.5 to 12 and an optimum pH is in the range of from 10 to 11 using a triolein emulsion as a substrate;(2) Operating temperature and optimum temperaturean operating temperature is in the range of from 30.degree. C. to 80.degree. C. and an optimum temperature is in the range of from 55.degree. C. to 65.degree. C. using the triolein emulsion as a substrate;(3) Molecular weighta molecular weight measured by SDS-polyacrylamide gel electrophoresis is 31,000.+-.2,000; and(4) Isoelectric pointan Isoelectric point measured by isoelectric point polyacrylamide gel electrophoresis is 5.2.+-.0.5.The lipase has high stability against detergent components such as surfactants, protease, etc. and can be blended together with protease with detergents.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: October 27, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Reiko Ishida, Masahiro Suzuki, Takashi Kotsuka, Kazunori Sakimoto