Patents by Inventor Shinichirou Tawaki

Shinichirou Tawaki 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).

  • Preparation of spherical polyphenol particles
    Patent number: 5824414
    Abstract: Phenols are reacted with hydrogen peroxide in a solution comprising an organic solvent compatible with water, water, a peroxidase and a dispersing agent to obtain spherical polyphenol particles.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: October 20, 1998
    Assignees: Mitsui Chemicals, Inc., Shiro Kobayashi
    Inventors: Shiro Kobayashi, Hiroshi Uyama, Sunao Maeda, Shinichirou Tawaki
  • Process for producing D-.alpha.-amino acids
    Patent number: 5068187
    Abstract: The 5-substituted hydantoins represented below can be transformed into D-.alpha.-amino acids by the use of the cultured broth, cells or treated cells of the genus Hansenula:5-substituted hydantoins: ##STR1## wherein R represents an alkyl, substituted alkyl, phenyl or substituted phenyl group.D-.alpha.-amino acids: ##STR2## wherein R represents the same meanings as above.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: November 26, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Mamoru Takeichi, Naoshi Hagihara, Hitoshi Tarukawa, Shinichirou Tawaki, Nobuyoshi Makiguchi