Patents by Inventor Tae Kitamura

Tae Kitamura 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).

  • Room temperature storable immunoglobulin preparation for intravenous injection
    Patent number: 6485725
    Abstract: A method for producing an immunoglobulin preparation for intravenous injection, which comprises the steps of: fractionating an immunoglobulin-containing solution with 4 to 10 w/v% of polyethylene glycol having a molecular weight of from 1,000 to 10,000, at a pH value of from 4.5 to 6.5, an ionic strength of from 0.0001 to 0.1 M and a temperature of from 0 to 4° C. to recover a supernatant fraction; and concentrating the supernatant fraction at a pH of from 3.5 to 5.0.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: November 26, 2002
    Assignee: Welfide Corporation
    Inventors: Yutaka Hirao, Motonori Hashimoto, Tae Kitamura, Yahiro Uemura
  • Room temperature storable immunoglobulin preparation for intravenous injection
    Patent number: 6159471
    Abstract: A method for producing an immunoglobulin preparation for intravenous injection, which comprises the steps of: fractionating an immunoglobulin-containing solution with 4 to 10 w/v % of polyethylene glycol having a molecular weight of from 1,000 to 10,000, at a pH value of from 4.5 to 6.5, an ionic strength of from 0.0001 to 0.1 M and a temperature of from 0 to 4.degree. C. to recover a supernatant fraction; and concentrating the supernatant fraction at a pH of from 3.5 to 5.0.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: December 12, 2000
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Yutaka Hirao, Motonori Hashimoto, Tae Kitamura, Yahiro Uemura
  • Immunoglobulin preparation and preparation process thereof
    Patent number: 6124437
    Abstract: An immunoglobulin preparation comprising an immunoglobulin, wherein the preparation contains, as a contaminant, serum albumin in an amount not greater than 10 .mu.g per 50 mg of immunoglobulin; and/or wherein the preparation is free of fine particles which can serve as a nucleus of insoluble foreign matter, and processes for preparing the immunoglobulin preparation are described.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: September 26, 2000
    Assignee: Welfide Corporation
    Inventors: Yutaka Hirao, Motonori Hashimoto, Tae Kitamura, Yahiro Uemura