Patents by Inventor Eiji Hayase

Eiji Hayase 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).

  • Process for preparation of deoxyribonucleases
    Patent number: 4259446
    Abstract: Disclosed is a process for the preparation of deoxyribonucleases (DNases) which comprise culturing a novel transformant belonging to the genus Bacillus, collecting a cell-free extract from cells obtained during a period ranging from the late logarithmic growth phase to the initial stage of the stationary growth phase, and subjecting said cell-free extract to fractionation or separation to obtain two or more DNases each of which possessing different substrate specificity.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: March 31, 1981
    Assignee: Rikagaku Kenkyusho
    Inventors: Tadahiko Ando, Takehiko Shibata, Eiji Hayase, Shukuko Ikawa