Patents by Inventor Hideki Tsuruoka

Hideki Tsuruoka 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).

  • Patent number: 5776922
    Abstract: 1. A corticoid derivative of the general formula ##STR1## wherein R represents hydrogen, hydroxy, methyl or methylene; inclusive of the acylation product thereof where the 17-position of the steroid skeleton is hydroxy and the ketone form thereof where R is hydroxy, or a physiologically acceptable salt thereof.Since the corticosteroid derivative of this invention is readily soluble in water and has antiallergic, antiinflammatory and antioxidant activities, it can be used with advantage in the prevention and therapy of various allergic diseases, inflammatory diseases, cataract and various ischemic organ diseases.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: July 7, 1998
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Kazumi Ogata, Hideki Tsuruoka, Takahiro Sakaue, Hidetoshi Nakao
  • Patent number: 5773652
    Abstract: An improved method for isolating and purifying a glutathione derivative is disclosed. More particularly, the invention provides a method for isolating and purifying S-(1, 2-dicarboxyethyl)glutathione or its pharmacologically acceptable salt from a reaction mixture available upon reacting glutathione or its salt with either fumaric acid or its salt or maleic acid or its salt, which comprises a first step of converting the S-(1, 2-dicarboxyethyl)glutathione or salt thereof in the reaction mixture to the corresponding copper salt, dissolving the copper salt in an aqueous solution of acetic acid, formic acid or propionic acid, and removing the contaminant glutathione, oxidized glutathione and fumaric acid copper salts with the aid of activated carbon and a second step of dissolving or suspending the isolated S-(1,2-dicarboxyethyl)glutathione copper salt in water and blowing hydrogen sulfide gas through the resulting aqueous solution or suspension to remove copper.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: June 30, 1998
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Kazumi Ogata, Hideki Tsuruoka
  • Patent number: 5466673
    Abstract: This invention relates to an intraocular irrigating composition containing a compound of the following formula or a pharmacologically acceptable salt thereof ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a hydrogen atom or a methyl group.The glutathione derivative contained in the intraocular irrigating solution of this invention is not only effective in protecting the intraocular tissues on the occasion of ophthalmic surgery but effectively inhibits precipitation of the calcium contained. Therefore, the intraocular irrigating solution of this invention is very stable and can be used with advantage in various kinds of ophthalmic surgery such as cataract surgery and transplantation of the cornea, iris and vitreous body.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: November 14, 1995
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Shinji Ohmori, Kazumi Ogata, Hideki Tsuruoka, Takahiro Sakaue
  • Patent number: 5448775
    Abstract: The present invention relates to a baseball glove having means located on a bottom palm portion for enhancing glove flexibility. The baseball glove includes a thumb stall, at least one finger stall, and a hand receiving opening. The glove includes a notch formed in a lower portion of the glove, and at least one slit formed in a web portion such that the notch and slits increase flexibility of the glove and facilitate opening and closing of the glove.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: September 12, 1995
    Assignee: Mizuno Corporation of America
    Inventors: Minoru Yamada, Kazuhiro Kume, Hideki Tsuruoka, Hisanobu Fugahashi, Robin Smith, John E. Schulte, Robert J. Ball, Robert J. Ready
  • Patent number: 5378692
    Abstract: A method of lowering lipids is disclosed wherein a patient is administered a lipid metabolism improving composition characterized by comprising a compound of the following formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a lower alkyl group; R.sub.2 and R.sub.3 are the same or different and each represents a hydroxyl group, a lower alkoxy group or an amino group, or a pharmacologically acceptable salt thereof as an active ingredient.Since the compound of the present invention lowers blood triglyceride, cholesterol and .beta.-lipoprotein levels, it is of value for ameliorating hyperlipidemia in arteriosclerotic diseases, e.g. myocardinal infarction, angina pectoris, cerebral infarction, cerebral arteriosclerosis, etc., nephrosis, hypertension, diabetes, obesity and other diseases, and prevention of various circulatory diseases.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: January 3, 1995
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Shinji Ohmori, Kazumi Ogata, Hideki Tsuruoka, Takahiro Sakaue, Yuuichi Isowaki, Yasuko Umegaki
  • Patent number: 5223488
    Abstract: Presented are an oxidized-type glutathione alkyl ester represented by the formula (I). ##STR1## wherein R denotes a lower alkyl group, and a salt thereof: a method of preparing said ester which is comprised of oxidizing a reduced-type glutathione monoalkyl ester represented by the formula (II), ##STR2## wherein R is as defined above, with the air, hydrogen peroxide or iodine in an aqueous solution: and a pharmaceutical composition and method for suppression of hepatic disorders characterized in that it contains as an active constituent said ester or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: June 29, 1993
    Assignee: Senju Pharmaceutical Company, Ltd.
    Inventors: Kazumi Ogata, Takahiro Sakaue, Yuichi Isowaki, Hideki Tsuruoka