Patents by Inventor Kazuhiro Shimokawa

Kazuhiro Shimokawa 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).

  • Patent number: 7311890
    Abstract: A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF5 and at least one member selected from the group consisting of acids, bases, salts and additives.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: December 25, 2007
    Assignee: Daikin Industries, Ltd.
    Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
  • Publication number: 20040245505
    Abstract: A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF5 and at least one member selected from the group consisting of acids, bases, salts and additives.
    Type: Application
    Filed: July 7, 2004
    Publication date: December 9, 2004
    Applicant: Daikin Industries, Ltd.
    Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
  • Patent number: 6784327
    Abstract: A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF5 and at least one member selected from the group consisting of acids, bases, salts and additives.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: August 31, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
  • Publication number: 20030176747
    Abstract: A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF5 and at least one member selected from the group consisting of acids, bases, salts and additives.
    Type: Application
    Filed: December 10, 2002
    Publication date: September 18, 2003
    Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
  • Patent number: 5688379
    Abstract: The present invention provides a process for preparing a perfluoroalkyl bromide characterized by reacting a perfluoroalkyl iodide represented by the formula C.sub.n F.sub.2n+1 I wherein n is an integer of 6 to 10 with bromine in a light-transmitting reactor with exposure to light and heating at 120.degree. to 180.degree. C. while simultaneously removing IBr resulting as a by-product by separation of a layer.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: November 18, 1997
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuhisa Furutaka, Tatsuo Nakada, Kazuhiro Shimokawa, Yorisato Hisanaga, Souichi Ueda
  • 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
  • Patent number: 5101054
    Abstract: A fluorine-containing platinum complex having anti-tumor activity of the formula: ##STR1## wherein R.sub.1 is a fluorine atom or a trifluoromethyl group,R.sub.2 is a fluorine atom, a hydrogen atom or a lower alkyl group,X is a halogen atom, a group of the formula: --NO.sub.2, or two Xs combined to form a group of the formulae: ##STR2## Y is a hydroxyl group or a halogen atom, and n is 0 or 1,and an anti-tumor composition comprising the same as an active ingredient.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: March 31, 1992
    Assignee: Daikin Industries, Ltd.
    Inventors: Tsuneo Yamashita, Hiroyuki Iwai, Kazuhiro Shimokawa
  • 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
  • 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
  • Patent number: 4876245
    Abstract: A fluorine-containing macrolide compound of the formula: ##STR1## wherein R.sup.1 is hydroxy or --OR (wherein R is C.sub.1 -C.sub.5 alkyl),R.sup.2 is hydrogen or hydroxy, orR.sup.1 and R.sup.2 together form a cyclic residue of the formula: ##STR2## (wherein R' and R" are independently hydrogen or C.sub.1 -C.sub.5 alkyl), ##STR3## when R.sup.4 is hydrogen or C.sub.1 -C.sub.5 alkyl, or R.sup.3 is ##STR4## when R.sup.4 is ##STR5## (wherein Ph is phenyl), R.sup.5 is hydrogen or C.sub.1 -C.sub.5 alkyl, andR.sup.6 is hydrogen or methyland an antimicrobial agent containing the fluorine-containing macrolide compound (I) as an effective component.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: October 24, 1989
    Assignee: Daikin Industries Ltd.
    Inventors: Yorisato Hisanaga, Kazuhiro Shimokawa, Toshihiko Kawano, Yasunori Suita, Tsuneo Yamashita
  • Patent number: 4847366
    Abstract: A novel 5-fluorouridine derivative of the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.10 aliphatic carbonyl group, R.sup.2 is a fluorine atom or a C.sub.1 -C.sub.3 aliphatic carbonyloxy group, and x is a halogen atom such as a fluorine, chlorine, bromine and iodine atom, which is useful as an intermediate in the preparation of a 5-fluoro-2'-deoxyuridine derivative which is useful as an anticancer agent.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: July 11, 1989
    Assignee: Daikin Industries Ltd.
    Inventors: Yoshihiro Yamamoto, Kazuhiro Shimokawa, Kunitada Tanaka, Yorisato Hisanaga
  • Patent number: 4810790
    Abstract: A novel 5-fluorouracil derivative of the formula: ##STR1## wherein R.sup.1 is a fluorine-containing C.sub.1 -C.sub.10 organic group which optionally contains sulfur, oxygen and/or nitrogen. The novel 5-fluorouracil derivative is useful as a carcinostatic substance, which has a high carcinostatic activity but which is less toxicity against digestive tract and causes less autonomic imbalance than other known 5-fluorouracil derivatives.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: March 7, 1989
    Assignee: Daikin Industries Ltd.
    Inventors: Yoshihiro Yamamoto, Kazuhiro Shimokawa, Toru Yoshizawa, Toshihiko Kawano, Hiroyuki Iwai
  • Patent number: 4528137
    Abstract: A fluorine-containing 3-oxygenated-.DELTA..sup.3,5 -steroid is prepared in a good yield by fluorinating a steroid with a compound of the formula:RCOOFwherein R is a hydrocarbon group.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: July 9, 1985
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Takao Takahara, Kazuhiro Shimokawa
  • Patent number: 4390740
    Abstract: Monofluorobenzene is prepared in a good yield by reacting cyclopentadiene or its dimer of the formula: ##STR1## with fluorohalomethane of the formula:CHFX.sub.2wherein Xs are, same or different, halogen atoms in the presence of a phase transfer catalyst and an acid acceptor.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: June 28, 1983
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Iwao Tabushi, Kazuhiro Shimokawa, Daiji Naito, Susumu Misaki, Tsutomu Yoshida