Patents by Inventor Kimio Furuhata

Kimio Furuhata 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).

  • Sialosyl cholesterol and neuropathy remedy comprising the same
    Patent number: 5126330
    Abstract: The present invention relates to a sodium salt of sialosyl cholesterol. The present compound has an excellent high water solubility, and therefore the compound is very useful as a medicine to be used for treating various diseases derived from lesions of peripheral or central nerves.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: June 30, 1992
    Assignee: Mect Corporation
    Inventors: Haruo Ogura, Kimio Furuhata, Shingo Sato, Masayoshi Ito, Yoshiyasu Shitori, Yoshitaka Nagai
  • Sialosyl cholesterol, process for producing the same, and neuropathy remedy comprising the same
    Patent number: 5023239
    Abstract: The present invention relates to a sodium salt of sialosyl cholesterol. The present compound has an excellent high water solubility, and therefore the compound is very useful as a medicine to be used for curing various diseases derived from lesions of peripheral or central nerves.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: June 11, 1991
    Assignee: MECT Corporation
    Inventors: Haruo Ogura, Kimio Furuhata, Shingo Sato, Masayoshi Ito, Yoshiyasu Shitori, Yoshitaka Nagai
  • Process for preparing N-acetylneuraminic acid derivatives
    Patent number: 4914195
    Abstract: A new process for preparing halides of N-acetylneuraminic acids useful as an intermediate in preparing new N-acetylneuraminic acid derivatives having an excellent immunological activity is provided, which process comprises simultaneously acetylating and halogenating an esterified N-acetylneuraminic acid with the aid of an acetyl halide, and according to the process, the halides may be obtained in high yield of about 90%.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: April 3, 1990
    Assignee: MECT Corporation
    Inventors: Haruo Ogura, Kimio Furuhata, Yoshiyasu Shitori, Masayoshi Ito
  • N-glycolylneuraminic acid derivative
    Patent number: 4774327
    Abstract: This invention provides a novel compound having the following formula: ##STR1## This compound is a useful intermediate for the preparation of N-glycolylneuraminic acid: ##STR2##
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: September 27, 1988
    Assignee: Mect Corporation
    Inventors: Haruo Ogura, Kimio Furuhata, Masayoshi Ito, Yoshiyasu Shitori
  • Sialic acid derivative and process for preparing the same
    Patent number: 4691012
    Abstract: A novel N-acetylneuraminic acid derivative, represented by the general formula: ##STR1## wherein the R.sup.1 groups are, independently, hydrogen or acetyl; R.sup.2 is a nucleoside residue; and R.sup.3 is carboxyl or methoxycarbonyl.The N-acetylneuraminic acid derivative is useful in inhibiting metastasis of cancer cells. Also provided is a process for the preparation of the derivatives.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: September 1, 1987
    Assignee: MECT Corporation
    Inventors: Haruo Ogura, Kimio Furuhata, Toshiaki Osawa, Satoshi Toyoshima, Yoshiyasu Shitori, Masayoshi Ito, Shoji Yoshimura
  • N-Acetylneuraminic acid derivatives and the preparation thereof
    Patent number: 4447600
    Abstract: Nucleoside or glucose derivatives of N-acetylneuraminic acids are provided, which have immunological activity, are clinically useful, as an immuno suppressive, in particular to treat autoimmune disease such as collagenosis disease without causing any serious side-effects and may be prepared by subjecting a halide of N-acetylneuraminate derivative together with a nucleoside or a glucose to Koenigs-Knorr reaction.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: May 8, 1984
    Assignee: Kanto Ishi Pharmaceutical Co., Ltd.
    Inventors: Haruo Ogura, Kimio Furuhata, Toshiaki Osawa, Satoshi Toyoshima, Yoshiyasu Shitori, Masayoshi Ito