Patents Examined by Munkund J. Shah
  • Crystalline 3-{4-methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3-oxo-propionitrile citrate
    Patent number: 6965027
    Abstract: This invention relates to novel amorphous and crystallline forms of 3-{(3R,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3-oxo-propionitrile mono citrate salt, useful as inhibitors of protein kinases, and to their methods of preparation.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: November 15, 2005
    Assignee: Pfizer Inc.
    Inventors: Mark E. Flanagan, Zheng J. Li
  • Bis(trialkylsiloxy)silicon naphthalocyanine compounds wherein all the alkyl groups are the same and have 1-3 carbon atoms
    Patent number: 5428152
    Abstract: Disclosed are naphthalocyanine compounds having siloxy groups bonded to a central metal silicon. The compounds can be used as a charge generating substance of an electrophotographic plate having high sensitivity to the longer wavelength light of about 800 nm without conducting a special treatment. The naphthalocyanine compounds are represented by the formula: ##STR1## wherein L is a group of the formula R.sub.1 R.sub.2 R.sub.3 SiO--, and R.sub.1, R.sub.2 and R.sub.3 are each a same alkyl group having 1-3 carbon atoms.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: June 27, 1995
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Shigeru Hayashida, Seiji Tai
  • DC-89 derivatives
    Patent number: 5214065
    Abstract: Novel DC-89 derivatives have an excellent anti-tumor activity, and thus are useful as anti-tumor agent.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: May 25, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hiromitsu Saito, Akira Asai, Satoru Nagamura, Eiji Kobayashi, Katsushige Gomi