Patents by Inventor Akiko Azuma

Akiko Azuma 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).

  • Antibacterial silane coupler compounds containing guanidyl group
    Patent number: 5312944
    Abstract: Novel silane coupler compounds having antibacterial activity are disclosed. Biguanidyl group or cyanoguanidyl group is introduced into silane coupler compounds.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: May 17, 1994
    Assignee: Mitsubishi Material Corporation
    Inventors: Tsunetoshi Honda, Akiko Azuma, Akira Nishihara
  • Antibacterial compounds containing guanidyl group
    Patent number: 5239100
    Abstract: Novel dimethylpolysiloxane compounds having antibacterial activity are disclosed. Biguanidyl group or cyanoguanidyl group are introduced into dimetylpolysiloxane compounds.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: August 24, 1993
    Assignee: Mitsubishi Materials Corporation
    Inventors: Honda Tsunetoshi, Akiko Azuma, Akira Nishihara
  • Novel penicillin derivatives containing a coumarin nucleus and medicines containing the same
    Patent number: 4303664
    Abstract: This invention provides novel penicillin derivatives of formula [I]; ##STR1## wherein A is hydrogen or hydroxyl, and B represents the cumarin nucleus of formula [III-a]; ##STR2## in which B.sub.1, B.sub.2, B.sub.3, B.sub.4 and B.sub.5 are same or different, and are hydrogen or substituent groups that may contain nitrogen, sulfur or oxygen atom,or nontoxic salts thereof, and bactericides containing said novel penicillin derivatives or nontoxic salts thereof as the main ingredient, and also an advantageous process for producing said novel penicillin derivatives or nontoxic salts thereof, which comprises reacting a derivative of .alpha.-aminobenzylpenicillin with a coumarincarboxylic acid or reacting 6-aminopencillanic acid, a carboxylic acid salt thereof or a protected derivative thereof having the carboxyl blocked with a readily removable protecting group, with a coumarincarboxylic acid phenylglycinamide.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: December 1, 1981
    Assignee: Teijin Limited
    Inventors: Syoji Ono, Takashi Sugiyama, Yoshiko Kawakami, Yataro Ichikawa, Yoji Suzuki, Hitoshi Ohmori, Akiko Azuma