Patents by Inventor Toshiro Ohtsubo
Toshiro Ohtsubo 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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Publication number: 20060062819Abstract: A solid pesticidal formulation, such as wettable powders, water dispersible granules and water soluble formulations, enveloped in a water soluble substance, such as polyvinyl alcohol and so on, wherein the solid pesticidal formulation comprises at least one water soluble hydroxy compound selected from the group consisting of alkanols, alkylene glycols, glycol monoethers, tri- or more valent alcohols, alcoholamines, hydroxyfatty acids and hydroxyfatty acid esters, or water soluble glycol ether acetates is excellent in stability after preserved.Type: ApplicationFiled: November 15, 2005Publication date: March 23, 2006Inventors: Nobuhito Ueda, Toshiro Ohtsubo
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Patent number: 6998132Abstract: A solid pesticidal formulation, such as wettable powders, water dispersible granules and water soluble formulations, enveloped in a water soluble substance, such as polyvinyl alcohol and so on, wherein the solid pesticidal formulation comprises at least one water soluble hydroxy compound selected from the group consisting of alkanols, alkylene glycols, glycol monoethers, tri- or more valent alcohols, alcoholamines, hydroxyfatty acids and hydroxyfatty acid esters, or water soluble glycol ether acetates is excellent in stability after preserved.Type: GrantFiled: June 14, 1999Date of Patent: February 14, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhito Ueda, Toshiro Ohtsubo
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Patent number: 6426082Abstract: An aqueous suspension formulation of encapsulated pesticide comprising 3 to 30% by weight of nonionic water-soluble substance which is a solid at room temperature and has 50 to 700 of molecular weight is easy to handle, excellent in preservative stability and highly antiseptic.Type: GrantFiled: May 6, 1999Date of Patent: July 30, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhito Ueda, Toshiro Ohtsubo
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Patent number: 6335026Abstract: A solid pesticidal composition containing acephate is stabilized by adding thereto at least one stabilizer selected from the group consisting of boron oxide, metaboric acid, aluminum oxide and the calcined product of synthetic silicon dioxide.Type: GrantFiled: March 31, 1994Date of Patent: January 1, 2002Assignee: Sumitomo Chemical Co., Ltd.Inventors: Yasuyuki Katayama, Toshiro Ohtsubo, Daniel C. Heffernan
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Patent number: 5977023Abstract: There are discolsed a pesticidal composition containing a water-insoluble alginate, which is prepared by treating a solid composition containing (a) a pesticidally active ingredient which is a pest-controlling active ingredient or a plant growth-regulating active ingredient and (b) an alginic acid or a water-soluble alginate with an aqueous solution containing a divalent or polyvalent cation which can convert said alginic acid or water-soluble alginate into a water-insoluble alginate. Also disclosed is a pesticidal composition containing a water-insoluble alginate, which is prepared by coating a solid substance containing the pesticidally active ingredient with a water-insoluble alginate. The composition of the invention has excellent sustained-release effects of the pesticidally active ingredient.Type: GrantFiled: September 29, 1997Date of Patent: November 2, 1999Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Inoue, Masao Ogawa, Toshiro Ohtsubo
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Patent number: 5945114Abstract: The water dispersible granule of the present invention is obtained by mixing a pesticide having a melting point of not more than 70.degree. C., a calcined product of precipitated hydrated silicon dioxide and a surface active agent, and granulating the resulting mixture by the wet granulation method or compaction method. This water dispersible granule is an excellent formulation of which the physical properties such as disintegrability-in-water, dispersibility, suspensibility, storage stability, etc. are good, and which is free from dust-scattering and is capable of being measured by volume.Type: GrantFiled: May 8, 1992Date of Patent: August 31, 1999Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Ogawa, Toshiro Ohtsubo, Shigenori Tsuda
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Patent number: 5929053Abstract: A pesticidal composition comprising microcapsules, each microencapsulating an organophosphorus compound having a melting point of at least 15.degree. C., a proportion (A) of aromatic ring structure in microcapsule wall material being not more than 40% by weight, and a ratio of (A) to (average diameter/wall thickness) of the microcapsules being not less than 0, but not more than 0.8, causes less color change to applied area even if applied outdoors.Type: GrantFiled: December 16, 1996Date of Patent: July 27, 1999Assignee: Sumitomo Chemical Company, LimitedInventors: Miwa Murakami, Masao Ogawa, Izumi Fujimoto, Toshiro Ohtsubo
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Patent number: 5707639Abstract: There is disclosed an insect growth regulator composition comprising (a) an insect growth-regulating active ingredient and, if necessary, another insecticidal active ingredient, (b) an organic substance having a solubility of not greater than 2% in water at 20.degree. C. and a melting point of 35.degree. through 100.degree. C., and (c) a glycol selected from the group having a melting point of 35.degree. through 100.degree. C. and consisting of polyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxybutylene glycol, and polyoxyethylene polyoxypropylene polyoxybutylene glycol, wherein the weight of the constituent (b) is equal to or greater than 3% based on the total weight, and a sum of the weight of the constituent (b) and the weight of the constituent (c) ranges from 20 to 98% based on the total weight, the constituent (b) and the constituent (c) being molten and then cooled to be solidified in manufacturing process of the insect growth regulator composition.Type: GrantFiled: October 17, 1994Date of Patent: January 13, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Owaga, Masao Inoue, Toshiro Ohtsubo, Hitoshi Kawada
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Patent number: 5698540Abstract: A liquid pesticidal composition including Acephate and one or more N-alkyl-2-pyrrolidones, and methods for stabilizing and inhibiting decomposition of Acephate by adding one or more N-alkyl-2-pyrrolidones to Acephate. The storage stability of Acephate bulk or Acephate in an Acephate-containing liquid pesticidal composition is improved by addition of the N-alkyl-2-pyrrolidone(s).Type: GrantFiled: February 10, 1995Date of Patent: December 16, 1997Assignee: Sumitomo Chemical Company, LimitedInventors: Yasuyuki Katayama, Toshiro Ohtsubo
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Patent number: 5488043Abstract: The present invention relates to a method for stabilizing acephate which comprises adding a sodium salt of condensed phosphate and/or a synthetic silicic acid in which the surface silanol groups being alkylsilylated to acephate or acephate-containing dry pesticidal formulation and a stabilized acephate having added a sodium salt of condensed phosphate and/or a synthetic silicic acid in which the surface silanol groups being alkylsilylated.Type: GrantFiled: December 20, 1994Date of Patent: January 30, 1996Assignee: Sumitomo Chemical Co., Ltd.Inventors: Masahiro Yamada, Yasuyuki Katayama, Toshiro Ohtsubo
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Patent number: 5306499Abstract: Microencapsulated pyrethroidal cockroach-controlling composition is provided, which has an excellent residual effect. The composition comprises phenylxylylethane and a pyrethroidal compound and is encapsulated in microcapsules formed of a polyurethane wall which have an average particle diameter of not more than 80 .mu.m, a wall thickness of not more than 0.3 .mu.m, and a value of the average particle diameter/wall thickness of 100-400.Type: GrantFiled: November 15, 1990Date of Patent: April 26, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiro Ohtsubo, Shigenori Tsuda, Hitoshi Kawada, Goro Shinjo, Kozo Tsuji
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Patent number: 5300293Abstract: A bait composition in a tablet form, which comprises as the essential components (a) at least one insect-growth controlling agent selected from (a-1) insect juvenile hormone-like compounds and (a-2) insect chitin-synthesis inhibitors in a microencapsulated form and (b) dextrin, optionally with an additional or auxiliary agent(s).Type: GrantFiled: May 24, 1990Date of Patent: April 5, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Fumiyasu Minagawa, Takuji Kohama, Hitoshi Kawada, Toshiro Ohtsubo, Goro Shinjo, Kazuyuki Maeda
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Patent number: 5232701Abstract: A composition excellent in dispersibility and diffusion in water, and storage stability comprising a) a pesticidal active ingredient, b) a surface active agent, c) a carbonate, d) a solid acid and e) at least one selected from the group consisting of boron oxide and metaboric acid, wherein at least one of the carbonate and the solid acid is water-soluble, the total content of the carbonate and the solid acid is in a proportion of 5-90% to the total weight, the weight ratio of the carbonate to the solid acid is in the range of 1:10-10:1, and the weight of at least one selected from the group consisting of boron oxide and metaboric acid is in a proportion of 0.5-40% to the total weight.Type: GrantFiled: October 10, 1991Date of Patent: August 3, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Ogawa, Toshiro Ohtsubo, Shigenori Tsuda
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Patent number: 5178872Abstract: An insecticidal and/or acaricidal and/or nematicidal composition having a rapid efficacy and residual activity which comprises a mixture of a poorly water-soluble organophosphorus insecticide and/or acaricide and/or nematicide and/or a poorly water-soluble carbamate insecticide and/or acaricide which have been microencapsulated in water-insoluble polymer coatings with a dispersing agent used in forming a microcapsule part, with a poorly water-soluble pyrethroid insecticide and/or acaricide emulsified or suspended in water with the above-mentioned dispersing agent used in forming a flowable part.Type: GrantFiled: November 8, 1990Date of Patent: January 12, 1993Assignee: Sumitomo Chemical Co., Ltd.Inventors: Toshiro Ohtsubo, Shigenori Tsuda, Kozo Tsuji
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Patent number: 5063059Abstract: Microencapsulated pyrethroidal cockroach-controlling composition is provided, which has an excellent residual effect. The composition comprises phenylxylylethane and a pyrethroidal compound and is encapsulated in microcapsules formed of a polyurethane wall which have an average particle diameter of not more than 80 .mu.m, a wall thickness of not more than 0.3 .mu.m, and a value of the average particle diameter/wall thickness of 100-400.Type: GrantFiled: November 15, 1990Date of Patent: November 5, 1991Assignee: Sumitomo Chemical Co., Ltd.Inventors: Toshiro Ohtsubo, Shigenori Tsuda, Hitoshi Kawada, Goro Shinjo, Kozo Tsuji
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Patent number: 4900551Abstract: Termites are prevented by applying thereto microencapsulated organophosphorus termite controlling composition in an amount of 5-100 g as an effective ingredient. The composition comprises an organophosphorus insecticidal compound encapsulated in a microcapsule formed of a polyurea or polyurethane wall and having an average particle diameter of not more than 80 .mu.m, a wall thickness of 0.1-1 .mu.m, and a value of the average particle diameter/wall thickness of 20-400.Type: GrantFiled: March 10, 1988Date of Patent: February 13, 1990Assignee: Sumitomo Chemical Company, Ltd.Inventors: Toshiro Ohtsubo, Shigenori Tsuda, Yukio Manabe, Takaaki Itoh, Hitoshi Kawada, Goro Shinjo, Kozo Tsuji
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Patent number: 4889719Abstract: A microencapsulated insecticidal composition has excellent residual effect which comprises an organophosphorus insecticide encapsulated in a wall formed of a polyurea and having an average particle diameter of not more than 80 .mu.m, a wall thickness of not more than 0.3 .mu.m and a ratio of an average particle diameter/wall thickness of not less than 250.Type: GrantFiled: July 6, 1988Date of Patent: December 26, 1989Assignee: Sumitomo Chemical Company, Ltd.Inventors: Toshiro Ohtsubo, Shigenori Tsuda, Yukio Manabe, Kiyoshi Kasamatsu, Hisami Takeda, Kozo Tsuji
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Patent number: 4760084Abstract: A dry pesticidal composition of a toxicant having a melting point in a range of from 0.degree. C. to 65.degree. C. (the said range of melting point applies also to the melting point of a mixure of toxicants) containing a hydrocarbon represented by the formula, ##STR1## wherein X.sub.1, X.sub.2, Y.sub.1, Y.sub.2, Z.sub.1 and Z.sub.2, which may be the same or different represent a hydrogen atom or an alkyl group having 2 or less carbon atom, R.sub.1 and R.sub.2, which may be the same or different, represent a hydrogen atom or a methyl group, and n represents 0 or 1.Type: GrantFiled: July 21, 1986Date of Patent: July 26, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Toshiro Ohtsubo, Shigeru Maruyama, Takashi Tamura, Nobuyuki Hirano, Masami Sakai