Patents by Inventor Chinehito Ebina
Chinehito Ebina 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: 5468590Abstract: A positive resist composition containing a quinone diazide compound and an alkali-soluble resin which contains a resin (A) obtained by a condensation reaction of an aldehyde compound, at least one phenol compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl or alkoxy group, and j is 1 or 2, and at least one compound of the formula: ##STR2## wherein R'.sub.1, R'.sub.2, R'.sub.3, R'.sub.4, R'.sub.5 and R'.sub.6 are independently a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl or alkoxy group, R'.sub.7 is a hydrogen, a C.sub.1 -C.sub.4 alkyl group or an aryl group, and k, m and n are independently 0, 1 or 2 provided that a sum of k, m and n is larger than 2, which composition is excellent in balance among various properties such as a profile, a sensitivity, heat resistance and a depth of focus.Type: GrantFiled: November 29, 1994Date of Patent: November 21, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuhiko Hashimoto, Haruyoshi Osaki, Chinehito Ebina, Kyoko Nagase, Hiroshi Moriuma, Yasunori Uetani
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Patent number: 5191003Abstract: A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.Type: GrantFiled: August 7, 1991Date of Patent: March 2, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Naoki Inui, Chinehito Ebina, Miyuki Oikawa, Hideo Nagasaki, Shinichi Yachigo, Manji Sasaki
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Patent number: 5106913Abstract: Dynamic properties of vulcanized rubber are improved, without accelerating scorching property remarkably nor deteriorating flex-cracking resistance, by incorporating in a filler-containing natural or synthetic rubber composition, a dinitrodiamine derivative represented by the general formula ##STR1## wherein A represents a divalent aliphatic group, a divalent cycloaliphatic group, a divalent aromatic group or a group represented by the formula --CH.sub.2 --X--CH.sub.2 --, wherein X represents a cycloalkylene group or a phenylene group, provided that if A represents a cycloaliphatic group or an aromatic group, the two carbon atoms in A which are bonding to the nitrogen atom are not vicinal to each other; R and R' independently represent hydrogen atom or an alkyl group having 1-12 carbon atoms and may conjointly form a ring; and R" represents hydrogen atom, an aliphatic group, a cycloaliphatic group or an aromatic group. A process for producing the dinitrodiamine derivatives is also disclosed.Type: GrantFiled: March 16, 1990Date of Patent: April 21, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Tetsuo Yamaguchi, Shin-ichi Yachigo, Tamaki Ishii, Masakatsu Yoshimura, Chinehito Ebina, Eizo Okino
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Patent number: 4845244Abstract: 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound, using a certain recrystallization solvent.Type: GrantFiled: April 28, 1988Date of Patent: July 4, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Chinehito Ebina, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii
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Patent number: 4829112Abstract: A thermally stable polyolefin resin improved in thermal processing by the incorporation therein of a phenolic compound represented by the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and a phosphite or phosphonite compound of 0.1 to 15 times by weight based on the phenolic compound.Type: GrantFiled: December 3, 1987Date of Patent: May 9, 1989Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tamaki Ishii, Shinichi Yachigo, Taisuke Okita, Manji Sasaki, Chinehito Ebina
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Patent number: 4769479Abstract: 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound.Type: GrantFiled: May 30, 1986Date of Patent: September 6, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Chinehito Ebina, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii
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Patent number: 4754045Abstract: Method for producing 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dime thylethyl}-2,4,8,10-tetraoxaspiro[5.5]undecane by ester exchange of a 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-propionic acid ester with 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane at a temperature of 170.degree.-250.degree. C. using a calcium compound as a catalyst in an amount of 0.05-1.5 moles per mole of the 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane.Type: GrantFiled: May 29, 1986Date of Patent: June 28, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Chinehito Ebina, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii
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Patent number: 4739080Abstract: Method for the purification of 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dime thylethyl} -2,4,8,10-tetraoxaspiro[5.5]undecane, to form crystals having a crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, show sharp X-ray diffraction peaks at angles of diffraction, to 2.theta.=2.8.degree., 2.theta.=8.7.degree. and 2.theta.=11.7.degree., by recrystallizing the ester at a temperature lower than 40.degree. C. using as a recrystallization solvent, A C.sub.5 -C.sub.10 alicyclic hydrocarbon, which may contain a limited amount of certain other solvents, or using a mixed solvent of a C.sub.5 -C.sub.10 aliphatic hydrocarbon and at least one other certain solvent in a certain weight ratio.Type: GrantFiled: May 30, 1986Date of Patent: April 19, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Chinehito Ebina, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii
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Patent number: 4721792Abstract: There are provided acetylenecarbamide derivatives of the formula: ##STR1## wherein A represents ##STR2## in which R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a C.sub.2 -C.sub.9 alkyl group. These derivatives are useful as stabilizers for polymeric organic substances susceptible to thermal and oxygen-induced degradation.Type: GrantFiled: January 30, 1986Date of Patent: January 26, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Chinehito Ebina, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii