Patents by Inventor Masaki Hashimoto

Masaki Hashimoto 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).

  • N-acylpyrrolidine derivative and synthesis and use thereof
    Patent number: 4701465
    Abstract: The present invention relates to N-acylpyrrolidine derivatives of the general formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1-4 alkyl group or the phenyl group, with the proviso that when R.sup.1 is a hydrogen atom, R.sup.2 is phenoxy group, benzoyl, the phenyl group, or a phenyl group which is mono-substituted by a halogen atom or a C.sub.1-4 alkoxy group, and that when R.sup.1 is a C.sub.1-4 alkyl group or the phenyl group, R.sup.2 is an aralkyl group of 7 to 10 carbon atoms, a C.sub.1-4 alkyl group, the phenyl group or a phenyl group mono-substituted by a halogen atom or a C.sub.1-4 alkoxy group; or R.sup.1 and R.sup.2 together form an unsubstituted benzylidene group or a benzylidene group which may be mono-substituted by a C.sub.1-4 alkoxy group; wherein n is an integer of 0 to 5; and pharmaceutical compositions thereof which are useful as anti-amnesic agents.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: October 20, 1987
    Assignee: Suntory Limited
    Inventors: Takaharu Tanaka, Masayuki Saitoh, Masaki Hashimoto, Naoki Higuchi
  • Rim for bicycles
    Patent number: D281967
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: December 31, 1985
    Inventor: Masaki Hashimoto