Patents by Inventor Hajime Karasuyama

Hajime Karasuyama 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).

  • Anti-human pre-B cell receptor antibody
    Patent number: 6335175
    Abstract: The present invention provides an antibody which recognizes a human pre-B cell receptor and does not recognize a human pro-B cell. The invention also provides an antibody which reacts with a VpreB molecule, one of the constituents of an SL chain of a human pre-B cell receptor expressed on the membrane surface of a human pre-B cell, or a VpreB molecule expressed within a human pro-B cell, but does not react with a &lgr;5 molecule of the surrogate light chain, and whose reactivity is such that a human pre-B cell or a human pro-B cell reacted with the antibody can be detected microscopically.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: January 1, 2002
    Assignees: Sumitomo Electric Industries, Ltd.
    Inventors: Keiko Tsuganezawa, Hajime Karasuyama
  • Transgenic animal allergy models and methods for their use
    Patent number: 6118044
    Abstract: Transgenic mice which constitutively express an antibody-type molecule encoded by the transgene and which has an IgE heavy chain constant region and is specific for a pre-defined antigen, provide an allergic reaction to that antigen without prior sensitization and are useful as allergy models.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: September 12, 2000
    Assignees: Sankyo Company, Limited, The Tokyo Metropolitan Institute of Medical Science
    Inventors: Hajime Karasuyama, Hiromichi Yonekawa, Choji Taya, Kunie Matsuoka
  • Recombinant protein receptor for IL-2
    Patent number: 5449756
    Abstract: The present invention is directed to recombinant the IL-21R.beta. chain or fragments thereof, cDNA coding therefore, vectors containing said cDNA, hosts transfected by said vectors, and monoclonal antibodies to said recombinant IL-2R.beta. or fragments thereof.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: September 12, 1995
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Tadatsugu Taniguchi, Masanori Hatakeyama, Sejiro Minamoto, Takeshi Kono, Takeshi Doi, Masayuki Miyasaka, Mitsuru Tsudo, Hajime Karasuyama