Patents by Inventor Sumiko Akiyoshi

Sumiko Akiyoshi 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).

  • Biologically pure culture of Fucoidanobacter marinus SI-0098 (FERM BP-5403)
    Patent number: 6379947
    Abstract: A novel endo-fucoidan-lyase and a novel microorganism, Fucoidanobacter marinus SI-0098 (FERM BP-5403) useful in the production of sugar compounds are disclosed Sugar compounds represented by the following general formula (1), wherein at least one of alcoholic hydroxyl group has been sulfated, or salts thereof: wherein Y represents hydrogen or a group represented by the following formula (2).
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: April 30, 2002
    Assignees: Takara Shuzo Co., Ltd., Research Institute for Glycotechnology
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato
  • Sugar compounds
    Publication number: 20010046696
    Abstract: A novel endo-fucoidan-lyase and a novel microorganism useful in the production of sugar compounds.
    Type: Application
    Filed: June 29, 2001
    Publication date: November 29, 2001
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato
  • Endo-fucoidan-lyase
    Patent number: 6277616
    Abstract: An isolated endo-fucoidan-lyase is described. The enzyme acts on fucoidan, has a pH optimum from 6 to 10, and has an optimum pH from 30 to 40° C. The enzyme can be isolated from Flavobacterium sp. FERM BP-5402. The enzyme is used to obtain sugar compounds which are useful in the study on carbohydrates.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: August 21, 2001
    Assignees: Takara Shuzo Co. Ltd., Research Institute for Glycotechnology
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato
  • Oligosaccharides from enzymatic cleavage of fucoidan
    Patent number: 6054577
    Abstract: A novel endo-fucoidan-lyase and a novel microorganism useful in the production of sugar compounds. Sugar compounds represented by the following general formula (1), wherein at least one of alcoholic hydroxyl group has been sulfated, or salts thereof: ##STR1## wherein Y represents hydrogen or a group represented by the following formula (2).
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: April 25, 2000
    Assignees: Takara Shuzo Co., Ltd., Research Institute For Glycotechnology
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato
  • Quantitative determination of L-fucose
    Patent number: 4927753
    Abstract: A method is provided for the quantitative determination of L-fucose in a sample solution. According to the method an L-fucose dehydrogenase having its optimum pH around neutrality is allowed to act upon the sample solution in the presence or absence of an .alpha.-L-fucosidase, and the amount of reduced nicotinamide adenine dinucleotide thus formed is measured.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: May 22, 1990
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Takeshi Sakai, Susumu Matsui, Sumiko Akiyoshi, Akira Obayashi