Patents by Inventor Hideya Matsuda

Hideya Matsuda 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).

  • Crystalline form III of N.sup..alpha. -[[(S)-4-oxo-2-azetidinyl]-carbonyl]- L
    Patent number: 4740586
    Abstract: A novel crystal form of N.sup..alpha. -[[(S)-4-oxo-2-azetidinyl]-carbonyl]-L-histidyl-L-prolinamide is provided and a process for preparing such crystals. The crystals provided by the present invention are the dihydrate form of the compound which exhibits a specific X-ray powder diffraction pattern, infared absorption spectrum and thermogravimetry-differential scanning calorimetry. The compound in its novel crystal form is useful in the treatment of consciousness disturbances and memory disorders.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: April 26, 1988
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Toshinari Tamura, Hideya Matsuda, Makoto Yoshida
  • Novel prostaglandin derivatives
    Patent number: 4026927
    Abstract: Novel prostaglandin derivatives are provided having the formula: ##STR1## wherein A represents ##STR2## one of R.sub.3 and R.sub.4 represents a hydrogen atom and the other of them represents a lower alkyl group; one of R.sub.5 and R.sub.6 represents a hydrogen atom and the other of them represents a hydroxyl group; and one of R.sub.7 and R.sub.8 represents a hydrogen atom and the other of them represents a lower alkyl group.The compounds of this invention have excellent effects as prostaglandin E.sub.2 and prostaglandin F.sub.2.sub..alpha..
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: May 31, 1977
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Masuo Murakami, Noriyoshi Inukai, Hidenori Iwamoto, Toshinari Tamura, Isao Yanagisawa, Osamu Hasegawa, Yoshio Ishii, Hideya Matsuda, Tetsuya Shiozaki, Kenichi Tomioka