Patents by Inventor Masatomo Fukasawa

Masatomo Fukasawa 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).

  • .beta.-lactam compounds and their production
    Patent number: 5227376
    Abstract: A compound of the formula: ##STR1## , which is useful as an antimicrobial agent.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: July 13, 1993
    Assignee: Sumitomo Pharmaceuticals Co., Ltd.
    Inventors: Makoto Sunagawa, Akira Sasaki, Hiroshi Yamaga, Masatomo Fukasawa, Hiroshi Nouda
  • .beta.-lactam compounds
    Patent number: 5122604
    Abstract: Novel .beta.-lactam compounds belonging to carbapenem or penem derivatives useful as antimicrobial agents or intermediates therefor and a process for producing these compounds are disclosed.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: June 16, 1992
    Assignee: Sumitomo Pharmaceuticals Co., Ltd.
    Inventors: Makoto Sunagawa, Haruki Matsumura, Takaaki Inoue, Masatomo Fukasawa, Masuhiro Kato
  • Beta-lactam compounds
    Patent number: 5093328
    Abstract: A beta-lactam compound of the formula: ##STR1## or a pharmaceutically acceptable salt thereof, which is useful as an anti-microbial agent or an intermediate in the synthesis of anti-microbial agents.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: March 3, 1992
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Makoto Sunagawa, Haruki Matsumura, Takaaki Inoue, Masatomo Fukasawa, Masuhiro Kato
  • .beta.-lactam compounds
    Patent number: 4933333
    Abstract: Novel .beta.-lactam compounds belonging to carbapenem or penem derivatives useful as antimicrobial agents or intermediates therefor and a process for producing these compounds are disclosed.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: June 12, 1990
    Assignee: Sumitomo Pharmaceuticals Co., Ltd.
    Inventors: Makoto Sunagawa, Haruki Matsumura, Takaaki Inoue, Masatomo Fukasawa, Masuhiro Kato
  • Antibiotics, and their production
    Patent number: 4764602
    Abstract: A novel antibiotic of the formula: ##STR1## wherein R is a hydrogen atom or a methyl group and preparation of the antibiotic by cultivating Nocardia sp. SC-4710.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: August 16, 1988
    Assignees: Sumitomo Chemical Company, Sumitomo Pharmaceuticals Company, Limited
    Inventors: Kazuo Kumagai, Kiyoshi Taya, Shin Tanaka, Koichi Moriguchi, Masatomo Fukasawa, Akio Fukui
  • Cephem derivatives
    Patent number: 4761409
    Abstract: A cephem derivative represented by the general formula ##STR1## wherein R.sup.1 represents hydrogen or methyl, R.sup.2 represents carboxyl or esterified carboxyl, and n represents 0 or 1, or a pharmaceutically acceptable salt thereof; intermediates for the cephem derivative or salt thereof; processes for producing these compounds; and a pharmaceutical composition and method for preventing or treating bacterial infectious diseases, wherein the cephem derivative or the salt thereof is used.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: August 2, 1988
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Hirotada Yamada, Naruhito Masai, Shinji Ueda, Takao Okuda, Masuhiro Kato, Masatomo Fukasawa, Masataka Fukumura
  • Cephem compounds
    Patent number: 4705784
    Abstract: A cephem compound represent by the general formula ##STR1## wherein, R.sup.1 represents hydrogen or lower alkyl, R.sup.2 and R.sup.3 are the same or different and each represents hydrogen or lower alkyl, R.sup.4 represents carboxyl or esterified carboxyl, and n represents 0 or 1, a salt of the cephem compound, and a process for producing the cephem compound or a salt thereof. Compounds of the above formula and salts thereof are valuable as antibacterial agents and are especially useful as oral drugs in the prevention or treatment of bacterial infectious diseases.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: November 10, 1987
    Assignee: Sumitomo Pharmaceuticals Company, Limited
    Inventors: Hirotada Yamada, Naruhito Masai, Sinji Ueda, Takao Okuda, Masatomo Fukasawa, Masuhiro Kato, Masataka Fukumura