Patents by Inventor Naoko Nagai

Naoko Nagai 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).

  • Microorganism capable of degrading polylactic acid resin and method of degrading polylactic acid resin using said microorganism
    Patent number: 6066492
    Abstract: A microorganism belonging to the genus Staphylococcus or the genus Streptomyces which is capable of degrading a polylactic acid resin. A method of degrading a polylactic acid resin including a step of culturing a microorganism capable of degrading a polylactic acid resin in a medium containing a polylactic acid resin. In particular, the microorganisms Streptomyces violaceusniger FERM BP-6110 and Streptomyces cyaneus FERM BP-6111 are used.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: May 23, 2000
    Assignees: Director-General of Agency of Industrial Science and Technology, Shimadzu Corp.
    Inventors: Yutaka Tokiwa, Hiroyuki Jikuya, Naoko Nagai
  • Method of degrading polylactic acid resin using staphylococcus hominis and staphylococcus epidermidis
    Patent number: 5925556
    Abstract: A microorganism belonging to the genus Staphylococcus or the genus Streptomyces which is capable of degrading a polylactic acid resin. A method of degrading a polylactic acid resin including a step of culturing a microorganism capable of degrading a polylactic acid resin in a medium containing a polylactic acid resin. In particular, the microorganisms Staphylococcus hominis FERM BP-6108 and Staphylococcus epidermidis FERM BP-6109.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: July 20, 1999
    Assignees: Agency of Industrial Science and Technology, Shimadzu Corporation
    Inventors: Yutaka Tokiwa, Hiroyuki Jikuya, Naoko Nagai