Patents by Inventor Tatsurokuro Tochikura

Tatsurokuro Tochikura 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).

  • Ganglioside ceramidase and process for producing same
    Patent number: 5143841
    Abstract: This invention provides a novel ganglioside ceramidase which has a substrate specificity at least for GD1a, GM1, GM2 and GM3 and acts at least on GD1a, GM1, GM2 and GM3 and catalyzes the reaction of hydrolysis of ganglioside to lysoganglioside and fatty acid.This invention further provides a process for producing the novel ganglioside ceramidase which comprises cultivating ganglioside ceramidase producing strain belonging to the genus Nocardia in a culture medium and collecting ganglioside ceramidase from the culture.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: September 1, 1992
    Assignee: Toyo Jozo Company, Ltd.
    Inventors: Yoshio Hirabayashi, Tatsurokuro Tochikura, Setsu Kadowaki, Kenji Yamamoto
  • Novel ganglioside ceramidase isolated from Nocardia and process for producing same
    Patent number: 4997760
    Abstract: This invention provides a novel ganglioside ceramidase which has a substrate specificity at least for GD1a, GM1, GM2 and GM3 and acts at least on GD1a, GM1, GM2 and GM3 and catalyzes the reaction of hydrolysis of ganglioside to lysoganglioside and fatty acid.This invention further provides a process for producing the novel ganglioside ceramidase which comprises cultivating ganglioside ceramidase producing strain belonging to the genus Nocardia in a culture medium and collecting ganglioside ceramidase from the culture.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: March 5, 1991
    Assignee: Toyo Jozo Company, Ltd.
    Inventors: Yoshio Hirabayashi, Tatsurokuro Tochikura, Setsu Kadowaki, Kenji Yamamoto
  • Method of producing endo-.alpha.-N-acetylgalactosaminidase from microorganisms
    Patent number: 4990450
    Abstract: This invention provides endo-.alpha.-N-acetylgalactosaminidase (endo-.alpha.-GalNAcase) from a microorganism belonging to the genus Alcarigenes. This endo-.alpha.-GalNAcase is very useful in the analysis of the structure and function of mucin-type sugar chains of glycoproteins, as it is an enzyme that cleaves O-glycosidic linkages of sugar chains of glycoproteins, releasing the sugar chain from said protein.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: February 5, 1991
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Tatsurokuro Tochikura, Hidehiko Kumagai, Kenji Yamamoto, Setsu Kadowaki