Patents by Inventor Masao Shiroshita
Masao Shiroshita 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: 5101076Abstract: Compounds of the present invention are represented by the formula, ##STR1## wherein X represents a lower alkyl, lower alkoxy, lower haloalkyl or lower haloalkoxy group or a halogen atom, and R.sup.1 and R.sup.2, which may be the same or different, represent a hydrogen atom or a methyl group. They are useful intermediates for preparing herbicidal compounds.Type: GrantFiled: May 15, 1991Date of Patent: March 31, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Masao Shiroshita, Susumu Ohtsuka, Kenji Arai, Naonori Hirata
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Patent number: 5041679Abstract: Compounds of the present invention are represented by the formula, ##STR1## wherein X represents a lower alkyl, lower alkoxy, lower haloalkyl or lower haloalkoxy group or a halogen atom, and R.sup.1 and R.sup.2, which may be the same or different, represent a hydrogen atom or a methyl group. They are useful intermediates for preparing herbicidal compounds.Type: GrantFiled: December 30, 1988Date of Patent: August 20, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Mitsunori Hiratsuka, Masao Shiroshita, Susumu Ohtsuka, Kenji Arai, Naonori Hirata
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Patent number: 4938794Abstract: A cinnoline derivative having the formula (I): ##STR1## in which X is --OH, --O.sup.- M.sup.+, --OR.sup.1 or ##STR2## wherein M.sup.+ is an alkali metal cation, an alkaline earth metal cation or ##STR3## in which R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.4 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.3 -C.sub.8 cycloalkyl group, a benzyl group or a phenyl group; R.sup.1 is a C.sub.1 -C.sub.9 alkyl group, a C.sub.3 -C.sub.6 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.1 -C.sub.3 alkoxy(C.sub.1 -C.sub.4) alkyl group, a C.sub.1 -C.sub.3 haloalkyl group, a C.sub.3 -C.sub.8 cycloalkyl group, a benzyl group or a phenyl group; and R.sup.2 and R.sup.3 are the same or different and each is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.4 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.3 -C.sub.8 cycloalkyl group, a benzyl group in which at most two of hydrogen atoms at the .Type: GrantFiled: December 9, 1988Date of Patent: July 3, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Masato Mizutani, Masao Shiroshita, Masaharu Sakaki, Nobuaki Mito, Hiroki Okuda
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Patent number: 4927827Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as a fungicide.Type: GrantFiled: May 19, 1988Date of Patent: May 22, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue, Masayo Sugano, Hirotaka Tanako
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Patent number: 4915727Abstract: A plant male sterilant, which comprises as an active ingredient a compound having the formula (I): ##STR1## in which X is --OH, --O.sup.- M.sup.+, --OR.sup.1 or ##STR2## wherein M.sup.+ is an alkali metal cation, an alkaline earth metal cation or ##STR3## in which R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.4 alkenyl group, C.sub.3 -C.sub.4 alkynyl, C.sub.3 -C.sub.8 cycloslkyl, benzyl or phenyl group;R.sup.1 is a C.sub.1 -C.sub.9 alkyl, a C.sub.3 -C.sub.6 alkenyl, a C.sub.3 -C.sub.4 alkynyl, C.sub.1 -C.sub.3 alkoxy (C.sub.1 -C.sub.4)-alkyl, C.sub.3 -C.sub.8 cycloalkyl, benzyl or phenyl; andR.sup.2 and R.sup.3 are the same or different and each is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.4 alkenyl, C.sub.3 -C.sub.4 alkynyl, C.sub.3 -C.sub.8 cycloalkyl, a benzyl group in which at most two hydrogen atoms at the .alpha.-position thereof may be substituted by methyl, C.sub.2 -C.sub.Type: GrantFiled: December 24, 1987Date of Patent: April 10, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Masato Mizutani, Masao Shiroshita, Nobuaki Mito, Hiroki Okuda, Masaharu Sakaki
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Patent number: 4875924Abstract: A cinnoline derivative having the formula (I): ##STR1## in which X is --OH, --O.sup.-M.sup.+, --OR.sup.1 or ##STR2## wherein M.sup.+ is an alkali metal cation, an alkaline earth ##STR3## in which R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.4 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.3 -C.sub.8 cycloalkyl group, benzyl group or phenyl group; R.sup.1 is a C.sub.1 -C.sub.9 alkyl group, a C.sub.3 -C.sub.6 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.1 -C.sub.3 alkoxy (C.sub.1 -C.sub.4) alkyl group, a C.sub.1 -C.sub.3 haloalkyl group, a C.sub.3 -C.sub.8 cycloalkyl group, benzyl group or phenyl group; and R.sup.2 and R.sup.3 are the same or different and each is hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.4 alkenyl group, a C.sub.3 -C.sub.4 alkynyl group, a C.sub.3 -C.sub.8 cycloalkyl group, a benzyl group in which at most two of hydrogen atoms at the .alpha.Type: GrantFiled: December 24, 1987Date of Patent: October 24, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Masato Mizutani, Masao Shiroshita, Masaharu Sakaki, Hiroki Okuda, Nobuaki Mito
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Patent number: 4873248Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as a fungicide.Type: GrantFiled: December 3, 1987Date of Patent: October 10, 1989Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4868178Abstract: A novel pyridinyl-s-triazine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as fungicide.Type: GrantFiled: February 8, 1988Date of Patent: September 19, 1989Assignee: Sumitomo Chemical Company, Ltd.Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanamitsu, Satoru Inoue
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Patent number: 4783466Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## which is effective as a plant disease protectant.Type: GrantFiled: September 8, 1987Date of Patent: November 8, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4769376Abstract: A novel pyridine derivative represented by the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.7 alkyl group; R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.2 alkyl group, R.sup.3 is a C.sub.1 -C.sub.4 alkyl group; and R.sup.4 is a C.sub.2 -C.sub.8 alkyl group; a C.sub.3 -C.sub.7 cycloalkyl group or a C.sub.4 -C.sub.7 alkylcycloalkyl group, or a C.sub.1 -C.sub.3 alkyl group substituted with a C.sub.3 -C.sub.7 cycloalkyl group, which is effective as a plant disease protectant.Type: GrantFiled: September 5, 1986Date of Patent: September 6, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4752608Abstract: A novel pyridinyl pyrimidine derivative of the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## which is effective as a plant disease protectant.Type: GrantFiled: December 3, 1986Date of Patent: June 21, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4451283Abstract: A herbicidal composition which comprises at least one of triazine compounds of the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.4 alkyl group or an amino group, R.sup.2 is a C.sub.1 -C.sub.4 alkoxy group, a C.sub.1 -C.sub.4 alkylthio group or a di(C.sub.1 -C.sub.4) alkylamino group and R.sup.3 is a cyclo(C.sub.3 -C.sub.7) alkyl group, a tertiary C.sub.4 -C.sub.5 alkyl group, an adamantyl group or a group of the formula: ##STR2## (in which R is a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a nitro group or a trihalomethyl group and n is an integer of 0 to 2) in a herbicidally effective amount and an inert carrier or diluent.Type: GrantFiled: July 9, 1981Date of Patent: May 29, 1984Assignee: Sumitomo Chemical Company, LimitedInventors: Yuzuru Sanemitsu, Masao Shiroshita, Shunichi Hashimoto, Haruhiko Katoh, Hiroshi Matsumoto