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).
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Patent number: 7311890Abstract: 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: GrantFiled: July 7, 2004Date of Patent: December 25, 2007Assignee: Daikin Industries, Ltd.Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
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Publication number: 20040245505Abstract: 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: ApplicationFiled: July 7, 2004Publication date: December 9, 2004Applicant: Daikin Industries, Ltd.Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
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Patent number: 6784327Abstract: 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: GrantFiled: December 10, 2002Date of Patent: August 31, 2004Assignee: Daikin Industries, Ltd.Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
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Publication number: 20030176747Abstract: 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: ApplicationFiled: December 10, 2002Publication date: September 18, 2003Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
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Patent number: 5688379Abstract: 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: GrantFiled: October 24, 1995Date of Patent: November 18, 1997Assignee: Daikin Industries, Ltd.Inventors: Yasuhisa Furutaka, Tatsuo Nakada, Kazuhiro Shimokawa, Yorisato Hisanaga, Souichi Ueda
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Patent number: 5304654Abstract: 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: GrantFiled: September 9, 1991Date of Patent: April 19, 1994Assignees: Yasunori Nishijima, Daikin Industries, Ltd.Inventors: Tsutomu Kagiya, Mitsuyuki Abe, Seiichi Nishimoto, Yuta Shibamoto, Kazuhiro Shimokawa, Yorisato Hisanaga, Tatsuo Nakada, Toru Yoshizawa
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Patent number: 5101054Abstract: 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: GrantFiled: December 4, 1990Date of Patent: March 31, 1992Assignee: Daikin Industries, Ltd.Inventors: Tsuneo Yamashita, Hiroyuki Iwai, Kazuhiro Shimokawa
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Patent number: 4977273Abstract: 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: GrantFiled: December 12, 1989Date of Patent: December 11, 1990Assignees: 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
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Patent number: 4927941Abstract: 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: GrantFiled: June 9, 1988Date of Patent: May 22, 1990Assignee: Yasunori Nishijima & Daikin Industries Ltd.Inventors: Tsutomu Kagiya, Mitsuyuki Abe, Seiichi Nishimoto, Yuta Shibamoto, Kazuhiro Shimokawa, Yorisato Hisanaga, Tatsuo Nakada, Toru Yoshizawa
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Patent number: 4876245Abstract: 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: GrantFiled: December 21, 1987Date of Patent: October 24, 1989Assignee: Daikin Industries Ltd.Inventors: Yorisato Hisanaga, Kazuhiro Shimokawa, Toshihiko Kawano, Yasunori Suita, Tsuneo Yamashita
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Patent number: 4847366Abstract: 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: GrantFiled: August 5, 1987Date of Patent: July 11, 1989Assignee: Daikin Industries Ltd.Inventors: Yoshihiro Yamamoto, Kazuhiro Shimokawa, Kunitada Tanaka, Yorisato Hisanaga
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Patent number: 4810790Abstract: 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: GrantFiled: October 9, 1987Date of Patent: March 7, 1989Assignee: Daikin Industries Ltd.Inventors: Yoshihiro Yamamoto, Kazuhiro Shimokawa, Toru Yoshizawa, Toshihiko Kawano, Hiroyuki Iwai
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Patent number: 4528137Abstract: 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: GrantFiled: January 10, 1984Date of Patent: July 9, 1985Assignee: Daikin Kogyo Co., Ltd.Inventors: Takao Takahara, Kazuhiro Shimokawa
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Patent number: 4390740Abstract: 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: GrantFiled: December 10, 1981Date of Patent: June 28, 1983Assignee: Daikin Kogyo Co., Ltd.Inventors: Iwao Tabushi, Kazuhiro Shimokawa, Daiji Naito, Susumu Misaki, Tsutomu Yoshida