Patents by Inventor Kazuo Itoi
Kazuo Itoi 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: 11330880Abstract: The present invention proposes a self-standing housing body solving a typical program and stably standing as a penholder. Specifically, the self-standing housing body according to the present invention is a self-standing housing body including a housing portion having a main housing space surrounded by a bottom surface and side surfaces standing from the bottom surface, and a lid portion having a sub-housing space surrounded by an upper surface and side surfaces standing from the upper surface. An upper side of one side surface of the housing portion and a lower side of one side surface of the lid portion form a joint portion, and about the joint portion as a rotation axis, the lid portion is rotatably joined to the housing portion.Type: GrantFiled: May 10, 2018Date of Patent: May 17, 2022Assignee: OSAKA CLIP co., LTDInventors: Tomoyuki Higuchi, Kazuo Itoi
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Patent number: 10906347Abstract: The present invention provides a sharpening completion detection mechanism that does not apply a heavy load to a core tip, and especially proposes a mechanism that moves a pencil in an ejection direction immediately when the sharpening completion detection mechanism detects completion of sharpening to mitigate damage to the core.Type: GrantFiled: January 31, 2017Date of Patent: February 2, 2021Assignee: OSAKA CLIP co., LTDInventor: Kazuo Itoi
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Publication number: 20200196724Abstract: The present invention proposes a self-standing housing body solving a typical program and stably standing as a penholder. Specifically, the self-standing housing body according to the present invention is a self-standing housing body including a housing portion having a main housing space surrounded by a bottom surface and side surfaces standing from the bottom surface, and a lid portion having a sub-housing space surrounded by an upper surface and side surfaces standing from the upper surface. An upper side of one side surface of the housing portion and a lower side of one side surface of the lid portion form a joint portion, and about the joint portion as a rotation axis, the lid portion is rotatably joined to the housing portion.Type: ApplicationFiled: May 10, 2018Publication date: June 25, 2020Inventors: Tomoyuki HIGUCHI, Kazuo ITOI
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Publication number: 20190126664Abstract: The present invention provides a sharpening completion detection mechanism that does not apply a heavy load to a core tip, and especially proposes a mechanism that moves a pencil in an ejection direction immediately when the sharpening completion detection mechanism detects completion of sharpening to mitigate damage to the core.Type: ApplicationFiled: January 31, 2017Publication date: May 2, 2019Inventor: Kazuo ITOI
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Patent number: 5500484Abstract: A compound that can be converted, at a low cost and in a simple way, into 2-aryl-1,3-propanediols serving as precursors for synthesizing felbamate acting as an antiepileptic has a structure represented by Formula (1): ##STR1## wherein Ar represents an aryl group; R.sup.1 represents a hydrogen atom or is R.sup.4 or R.sup.5, where R.sup.4 represents an alkoxy group having 1 to 10 carbon atoms and R.sup.5 represents a hydroxy group or an acyloxy group having 1 to 10 carbon atoms; and R.sup.2 and R.sup.3 are hydrogen atoms at the same time or R.sup.2 and R.sup.3 together form a group represented by Formula (2): ##STR2## wherein R.sup.6 and R.sup.7 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or R.sup.6 and R.sup.7 together form an oligomethylene group having 2 to 10 carbon atoms.Type: GrantFiled: August 26, 1994Date of Patent: March 19, 1996Assignee: Kuraray Co., Ltd.Inventors: Hideharu Iwasaki, Koichi Yoneda, Yoichi Kido, Takeo Hosogai, Kazuo Itoi, Masahiko Kitayama
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Patent number: 4532258Abstract: Novel pesticidal compositions are comprised of a 2,2-dimethyl-3-(substituted ethyl)cyclopropanecarboxylic acid ester as the active ingredient, said cyclopropanecarboxylate having the structural formula: ##STR1## wherein X, Y and Z are the same or different and at least two of same are chlorine or bromine, with the remaining one being hydrogen, methyl, chlorine or bromine; R is an alcohol residue represented by one of the following structural formulae (II), (III), (IV) and (V): ##STR2## where A represents hydrogen, cyano, ethynyl or thiocarbamoyl; Q is hydrogen, chlorine, bromine, fluorine, methyl or trifluoromethyl; R.sup.1 is propargyl or benzyl; R.sup.2 represents 2-halogeno-3-phenyl-1-propen-1-yl, (dihalogenovinyloxy)phenyl, benzylphenyl, phthalimido, thiophthalimido, di- or tetrahydrophthalimido or dialkylmaleimido; R.sup.3 represents allyl, 2,4-pentadienyl, propargyl or benzyl.Type: GrantFiled: September 26, 1979Date of Patent: July 30, 1985Assignee: Kuraray Co., Ltd.Inventors: Yoshiaki Omura, Fumio Mori, Yoshiji Fujita, Takashi Nishida, Takeo Hosogai, Sukeji Aihara, Yoshin Tamai, Fumio Wada, Kazuo Itoi
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Patent number: 4390547Abstract: Novel pesticidal compositions are comprised of a 2,2-dimethyl-3-(substituted ethyl)cyclopropanecarboxylic acid ester as the active ingredient, said cyclopropanecarboxylate having the structural formula: ##STR1## wherein X, Y and Z are the same or different and at least two of same are chlorine or bromine, with the remaining one being hydrogen, methyl, chlorine or bromine; R is an alcohol residue represented by one of the following structural formulae (II), (III), (IV) and (V): ##STR2## where A represents hydrogen, cyano, ethynyl or thiocarbamoyl; Q is hydrogen, chlorine, bromine, fluorine, methyl or trifluoromethyl; R.sup.1 is propargyl or benzyl; R.sup.2 represents 2-halogeno-3-phenyl-1-propen-1-yl, (dihalogenovinyloxy)phenyl, benzylphenyl, phthalimido, thiophthalimido, di- or tetrahydrophthalimido or dialkylmaleimido; R.sup.3 represents allyl, 2,4-pentadienyl, propargyl or benzyl.Type: GrantFiled: May 1, 1981Date of Patent: June 28, 1983Assignee: Kuraray Co., Ltd.Inventors: Yoshiaki Omura, Fumio Mori, Yoshiji Fujita, Takashi Nishida, Yoshin Tamai, Fumio Wada, Kazuo Itoi
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Patent number: 4315029Abstract: Racemic modifications each consisting of specific isomers of .alpha.-cyano-3-phenoxybenzyl cis- or trans-2,2-dimethyl-3-(2,2,2-trichloroethyl)cyclopropanecarboxylate with the absolute configurations [.alpha.S, 1R] an [.alpha.R, 1S] with respect to the asymmetric carbon atoms in the alcohol and acid moieties, a method of producing the same and pesticidal compositions containing the same as active ingredient are provided. .alpha.-Cyano-3-phenoxybenzyl cis- or trans-2,2-dimethyl-3-(2,2,2-trichloroethyl)cyclopropanecarboxylate has higher pesticidal activities than those pesticides that are in general use and consequently selective production of the above specific racemic modification as defined by the combinations of the absolute configuration with respect to the asymmetric carbon atom at the position in the alcohol moiety and the absolute configuration with respect to the asymmetric carbon atom in the acid moiety provides compounds having still higher pesticidal activities.Type: GrantFiled: March 10, 1980Date of Patent: February 9, 1982Assignee: Kuraray Co., Ltd.Inventors: Fumio Mori, Yoshiaki Omura, Yoshiji Fujita, Takashi Nishida, Takeo Hosogai, Fumio Wada, Sukeji Aihara, Yoshin Tamai, Kazuo Itoi
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Patent number: 4299839Abstract: Novel pesticidal compositions are comprised of a 2,2-dimethyl-3-(substituted ethyl)cyclopropanecarboxylic acid ester as the active ingredient, said cyclopropanecarboxylate having the structural formula: ##STR1## wherein X, Y and Z are the same or different and at least two of same are chlorine or bromine, with the remaining one being hyrogen, methyl, chlorine or bromine; R is an alcohol residue represented by one of the following structural formulae (II), (III), (IV) and (V): ##STR2## where A represents hydrogen, cyano, ethynyl or thiocarbamoyl; Q is hydrogen, chlorine, bromine, fluorine, methyl or trifluoromethyl; R.sup.1 is propargyl or benzyl; R.sup.2 represents 2-halogeno-3-phenyl-1-propen-1-yl, (dihalogenovinyloxy)phenyl, benzylphenyl, phthalimido, thiophthalimido, di- or tetrahydrophthalimido or dialkylmaleido; R.sup.3 represents allyl, 2,4-pentadienyl, propargyl or benzyl.Type: GrantFiled: September 26, 1979Date of Patent: November 10, 1981Assignee: Kuraray Co., Ltd.Inventors: Yoshiaki Omura, Fumio Mori, Yoshiji Fujita, Takashi Nishida, Takeo Hosogai, Sukeji Aihara, Yoshin Tamai, Fumio Wada, Kazuo Itoi
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Patent number: 4190730Abstract: A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1,1,1-trihalogeno-4-methyl-3-penten-2-ol thus prepared is useful as a synergist for herbicides or a physiologically active compound, and, additionally, is useful as a starting material for the synthesis of 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane carboxylic esters which are active ingredients of insecticides.Type: GrantFiled: March 28, 1978Date of Patent: February 26, 1980Assignee: Kuraray Co., Ltd.Inventors: Fumio Mori, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4117247Abstract: A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1,1,1-trihalogeno-4-methyl-3-penten-2-ol thus prepared is useful as a synergist for herbicides or a physiologically active compound, and, additionally, is useful as a starting material for the synthesis of 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane carboxylic esters which are active ingredients of insecticides.Type: GrantFiled: April 11, 1977Date of Patent: September 26, 1978Assignee: Kuraray Co., Ltd.Inventors: Fumio Mori, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4113968Abstract: When 1-halogeno-3-alkene-2-ol is reacted with an ortho-carboxylic ester and/or a ketene acetal, a .gamma.-halogeno-.delta.-unsaturated-carboxylic ester is obtained as a main reaction product. When this intermediate is treated with a basic substance, a substituted cyclopropane-carboxylic ester is formed. This ester can be used as an insecticide or an agricultural chemical as it is or after the alcohol residue of the ester has been converted to other alcohol residue.Type: GrantFiled: September 26, 1975Date of Patent: September 12, 1978Assignee: Kuraray Co., Ltd.Inventors: Fumio Mori, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4105700Abstract: A process for obtaining a stereospecific nerolidol at the .DELTA..sup.6 -position thereof by rectifying a mixture of .DELTA..sup.6 -cis-nerolidol and .DELTA..sup.6 -trans-nerolidol in rectification column having from 10 to 100 theoretical plates with a reflux ratio of from 2 to 200 at a temperature below 230.degree. C. under reduced pressure to separate each stereospecific nerolidol from said mixture.Type: GrantFiled: March 17, 1977Date of Patent: August 8, 1978Assignee: Kuraray Company, Ltd.Inventors: Yoshiji Fujita, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4053380Abstract: 1,1,1-Trihalogeno-4-methyl pentenes and 1,1-dihalogeno-4-methyl-1,3-pentadienes are produced. These compounds are of value as intermediates for the production of pyrethrin analogs which are of use as insecticides or agricultural chemicals.Type: GrantFiled: April 13, 1976Date of Patent: October 11, 1977Assignee: Kurraray Co., Ltd.Inventors: Yoshiji Fujita, Yoshiaki Omura, Fumio Mori, Kazuo Itoi, Takashi Nishida, Yoshin Tamai, Sukeji Aihara, Takeo Hosogai, Fumio Wada
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Patent number: 4032588Abstract: A non-irritating base component useful for cosmetics and topical preparations consisting of 2,6,10,15,19,23-hexamethyltetracosane having a high stability and being very safe for use on skin are hereby disclosed. Said component is synthesized by (a) preparing diacetylene dialcohol by reacting at least one ketone selected from the group consisting of 6,10-dimethylundecan-2-one, 6,10-dimethylundeca-3,9-dien-2-one, 6,10-dimethylundeca-5,9-dien-2-one, 6,10-dimethylundeca-5,10-dien-2-one and 6,10-dimethylundeca-3,5,9-trien-2-one, with acetylene and then subjecting the reaction product to the oxidation coupling, or by reacting ketone with diacetylene and (b) hydrocracking the diacetylene dialcohol directly or after hydrogenation.Type: GrantFiled: February 4, 1975Date of Patent: June 28, 1977Assignee: Shiseido Co., Ltd.Inventors: Kenichi Tomita, Toshiaki Shibuya, Suzuko Koshiba, Kazuo Itoi
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Patent number: 4028385Abstract: A process for preparing stereospecific farnesylacetic acid and ester thereof by rectifying a mixture of .DELTA..sup.4,8 -trans- and .DELTA..sup.4 -cis-.DELTA..sup.8 -trans-farnesylacetic acids or esters thereof or .DELTA..sup.4,8 -trans- and .DELTA..sup.4 -cis-.DELTA..sup.8 -trans-farnesylacetic acid or esters thereof or a mixture of four isomers of the said farnesylacetic acids or esters thereof.Type: GrantFiled: August 18, 1975Date of Patent: June 7, 1977Assignee: Kuraray Co., Ltd.Inventors: Yoshiji Fujita, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4026960Abstract: 2,7,10,15,18,23-Hexamethyltetracosane is a novel compound. This compound is prepared [1] by hydrogenating 2,7,10,15,18,23-hexamethyltetracosa-1,6,18,23-tetraene-11,13-diyne-10,15-d iol [itself a novel compound] or 2,7,10,15,18,23-hexamethyltetracosa-11,13-diyne-10,15-diol, dehydrating the hydrogenated intermediates, and thence hydrogenating the dehydrated precursors, or [2] by selectively, partially hydrogenating the said 10,15-diol compounds and thence hydrogenolyzing the precursor diols, or [3] by hydrogenolyzing the said 10,15-diol compounds, or [4] by hydrogenolyzing the hydrogenated intermediates of the reaction [1]. The compound, 3,6,11-trimethyl-undeca-6,11-dien-1-yl-3-ol, a starting material intermediate, is also a novel compound.Type: GrantFiled: July 9, 1974Date of Patent: May 31, 1977Assignee: Kuraray Co., Ltd.Inventors: Takashi Nishida, Yoichi Ninagawa, Kazuo Itoi, Yoshiaki Omura, Yoshin Tamai, Takeo Hosogai, Yoshiji Fujita
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Patent number: 4025539Abstract: 2-Substituted or unsubstituted geranyl actic acid esters represented by the general formula [I], ##STR1## wherein R.sub.1 represents a hydrogen atom or a hydrocarbon and R.sub.5 is the same as R.sub.2, R.sub.3 or R.sub.4 hereinafter defined, are prepared by reacting linalool (II) with 2-substituted or unsubstituted ortho acetic acid ester derivatives represented by the general formula [III] ##STR2## wherein R.sub.2, R.sub.3 and R.sub.4, which are the same or different, each represents an alkyl group or a cycloalkyl group, in the presence of an acidic catalyst.Type: GrantFiled: November 20, 1975Date of Patent: May 24, 1977Assignee: Kuraray Co., Ltd.Inventors: Yoshiji Fujita, Yoshiaki Omura, Takashi Nishida, Kazuo Itoi
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Patent number: 4011277Abstract: Novel 2,6,10,15,19,23-hexamethyltetracosane-10,15-diol derivatives. Such derivatives are prepared by hydrogenation of 2,6,10,15,19,23-hexamethyltetracosa-11,13-diyne-10,15-diol derivatives and used as starting materials for preparing squalane.Type: GrantFiled: March 25, 1974Date of Patent: March 8, 1977Assignees: Kuraray Co., Ltd., Kyowa Gas Chemical Industry Co., Ltd.Inventors: Takashi Nishida, Yoichi Ninagawa, Kazuo Itoi, Yutaka Omura, Haruo Nagai
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Patent number: RE31330Abstract: 1,1,1-Trihalogeno-4-methyl pentenes and 1,1-dihalogeno-4-methyl-1,3-pentadienes are produced. These compounds are of value as intermediates for the production of pyrethrin analogs which are of use as insecticides or agricultural chemicals.Type: GrantFiled: October 23, 1980Date of Patent: August 2, 1983Assignee: Kuraray Co., Ltd.Inventors: Yoshiji Fujita, Yoshiaki Omura, Fumio Mori, Kazuo Itoi, Takashi Nishida, Yoshin Tamai, Sukeji Aihara, Takeo Hosogai, Fumio Wada