Patents by Inventor Yuta Shibamoto

Yuta Shibamoto 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).

  • Fluorine-containing nitroimidazole compounds
    Patent number: 5304654
    Abstract: A 2-nitroimidazole compound of the formula: ##STR1## wherein R.sub.f is a fluorine-containing organic group which has at least one fluorine atom on a carbon atom which bonds to the nitrogen atom of the imidazole ring or a carbon atom which bonds to said carbon atom and a radiosensitizer comprising said nitroimidazole derivative.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: April 19, 1994
    Assignees: Yasunori Nishijima, Daikin Industries, Ltd.
    Inventors: Tsutomu Kagiya, Mitsuyuki Abe, Seiichi Nishimoto, Yuta Shibamoto, Kazuhiro Shimokawa, Yorisato Hisanaga, Tatsuo Nakada, Toru Yoshizawa
  • Fluorine-containing 2-nitroimidazole derivatives
    Patent number: 4977273
    Abstract: A 2-nitroimidazole derivative of the formula: ##STR1## wherein R.sub.f is a group of the following formula (II) or (III):--CH.sub.2 CFXCH.sub.2 OR.sub.1 (II)wherein X is a hydrogen atom or a halogen atom; R.sub.1 is a group of the formula: ##STR2## wherein R.sub.2 is a hydrogen atom, a hydroxyl group, a C.sub.1 -C.sub.3 alkyl group, a C.sub.2 -C.sub.4 acyl group, benzylidene or acetonide; R.sub.3 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group; Z is a hydrogen atom, COOY, COOR.sub.3, CONHOY, CONR.sub.4 R.sub.5 (wherein R.sub.4 and R.sub.5 are hydroxyl group-containing C.sub.1 -C.sub.3 alkyl groups or hydrogen atoms; Y is a hydrogen atom or a monovalent metal atom), an amino group, a hydroxyl group or OR.sub.3 ; l is an integer of 1 to 3; o is an integer of 0 to 3; p is an integer of 0 to 2; q is an integer of 0 to 3; m and n are integers of 0 to 4; and 1.ltoreq.m+n.ltoreq.4 or ##STR3## wherein R.sub.3, X and p are the same as defined above; Z' is the same as Z or is OCOOCH.sub.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: December 11, 1990
    Assignees: Kyoto University of Honmachi, Taisho Pharmaceutical Co., Ltd., Daikin Industries, Ltd.
    Inventors: Tsutomu Kagiya, Mitsuyuki Abe, Seiichi Nishimoto, Yuta Shibamoto, Susumu Otomo, Tohru Tanami, Kazuhiro Shimokawa, Toru Yoshizawa, Yorisato Hisanaga
  • Fluorine-containing nitroazole derivatives and radiosensitizer comprising the same
    Patent number: 4927941
    Abstract: A nitroazole derivative of the formula:NA--R.sub.f (I)wherein NA is 3-nitro-1,2,4-triazol-l-yl and R.sub.f is a fluorine-containing organic group which is useful as a radiosensitizer.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: May 22, 1990
    Assignee: Yasunori Nishijima & Daikin Industries Ltd.
    Inventors: Tsutomu Kagiya, Mitsuyuki Abe, Seiichi Nishimoto, Yuta Shibamoto, Kazuhiro Shimokawa, Yorisato Hisanaga, Tatsuo Nakada, Toru Yoshizawa