Patents by Inventor Tatsuya Yamagata

Tatsuya Yamagata 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).

  • Amino spacered glycosaminoglycan derivatives and their use in copolymerization with acrylamide
    Patent number: 6228998
    Abstract: A glycosaminoglycan derivative is disclosed wherein a first amino group of a spacer compound (NH2—Y—NH2) is bonded to an aldehyde formed by reducing and partially oxidizing a reducing end sugar of a glycosaminoglycan, via an aminoalkyl bond, or a lactone formed by oxidizing and cyclodehydrating the reducing end sugar of a glycosaminoglycan, via an acid amide bond, and further a hydrocarbon compound having a allyl group at one end and a functional group at another end which is bonded to the second amino group of the spacer compound. This derivative is useful as a substrate in a process for identifying a glycosaminoglycan-degrading enzyme that gives good reproducibility and sensitivity.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: May 8, 2001
    Assignee: Seikagaku Kogyo Kabushiki Kaisha
    Inventors: Ryu Miura, Sadako Yamagata, Tatsuya Yamagata