Patents by Inventor Kazuo Takebe
Kazuo Takebe 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: 6641960Abstract: A photosensitive solution comprising a colorant, a binder, a photoactive compound and a solvent, wherein the solvent can dissolve a dried film formed from a photosensitive solution in 5 minutes or shorter when the dried film is immersed in the solvent, the amount of the solvent being 10 times by weight based on the amount of the dried film, is provided; and by using the photosensitive solution, even when application of the solution is conducted with a coater of slit and spin system, formation of the dried colored matter adhered to a color filter can be suppressed, frequency of the washing can be reduced, and the productivity can be improved.Type: GrantFiled: July 10, 2001Date of Patent: November 4, 2003Assignee: Sumitomo Chemical Company, LimitedInventor: Kazuo Takebe
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Patent number: 6641961Abstract: A colored photosensitive composition used for producing a color filter which comprises a colorant (A), a binder polymer (B), a photo-polymerizable compound (C), a photo-polymerization initiator (D) and a chain transfer agent (E) is provided, and using the colored photosensitive composition, color pixels or black matrices having a rectangular or forward-tapered cross section can be formed even when the colored photosensitive composition contains the colorant in a high concentration.Type: GrantFiled: November 27, 2001Date of Patent: November 4, 2003Assignee: Sumitomo Chemical Company, LimitedInventor: Kazuo Takebe
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Publication number: 20030054265Abstract: A photosensitive solution for forming a picture cell comprising a pigment [A], a binder polymer [B], a radiation-sensitive compound [C], a solvent [D] and a carboxylic acid or salts thereof [E], wherein the pigment [A] includes at least one selected from C. I. Pigment Red 242 and C. I. Pigment Red 254, and the carboxylic acid or salts thereof [E] is at least one selected from oxalic acid, malonic acid, succinic acid and salts thereof is provided, and, by using the photosensitive solution, colored picture cells having excellent adherence with a substrate can be uniformly formed without unevenness, while leaving no un-dissolved substance onto non-cell parts on a substrate.Type: ApplicationFiled: May 28, 2002Publication date: March 20, 2003Inventors: Kazuo Takebe, Toshiya Inoue, Kiyoharu Nakatsuka
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Patent number: 6514669Abstract: A pigment-dispersion photo-sensitive coating solution comprising a binder resin, an organic-solvent and a main pigment dispersed in the solvent, wherein the combined area of peaks detected at a relative retention ratio in the range of 0.68 to 0.72 based on a retention time of dibutyl phthalate and peaks detected at a relative retention ratio in the range of 1.06 to 1.10 based on a retention time of dibutyl phthalate is not more than 50% of the total area of all peaks when the pigment is extracted by ethyl acetate and the extracts are analyzed by high-speed liquid chromatography using dibutyl phthalate as internal standard, is provided and use of the coating solution ensures that the colored image of stable quality is formed.Type: GrantFiled: December 13, 2000Date of Patent: February 4, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuo Takebe, Takao Mori, Shigeo Hozumi
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Publication number: 20020136968Abstract: This invention provides a colored photosensitive composition comprising a colorant (A), a binder polymer (B) containing monomer unit having oxetane structure, a photo-polymerizable compound (C) and a photo-polymerization initiator (D), and, using the colored photosensitive composition of the invention, color pattern having excellent solvent resistance can be formed even when the colored photosensitive composition contains the colorant (A) in a high concentration.Type: ApplicationFiled: January 22, 2002Publication date: September 26, 2002Inventor: Kazuo Takebe
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Publication number: 20020094485Abstract: A colored photosensitive composition used for producing a color filter which comprises a colorant (A), a binder polymer (B), a photo-polymerizable compound (C), a photo-polymerization initiator (D) and a chain transfer agent (E) is provided, and using the colored photosensitive composition, color pixels or black matrices having a rectangular or forward-tapered cross section can be formed even when the colored photosensitive composition contains the colorant in a high concentration.Type: ApplicationFiled: November 27, 2001Publication date: July 18, 2002Inventor: Kazuo Takebe
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Publication number: 20020022186Abstract: A photosensitive solution comprising a colorant, a binder, a photoactive compound and a solvent, wherein the solvent can dissolve a dried film formed from a photosensitive solution in 5 minutes or shorter when the dried film is immersed in the solvent, the amount of the solvent being 10 times by weight based on the amount of the dried film, is provided; and by using the photosensitive solution, even when application of the solution is conducted with a coater of slit and spin system, formation of the dried colored matter adhered to a color filter can be suppressed, frequency of the washing can be reduced, and the productivity can be improved.Type: ApplicationFiled: July 10, 2001Publication date: February 21, 2002Inventor: Kazuo Takebe
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Publication number: 20020015901Abstract: A photosensitive solution for forming a picture cell comprising a pigment [A], a binder polymer [B], a radiation-sensitive compound [C], a solvent [D] and a carboxylic acid or salts thereof [E], wherein the pigment [A] includes at least one selected from C. I. Pigment Red 242 and C. I. Pigment Red 254, and the carboxylic acid or salts thereof [E] include at least one selected from oxalic acid, malonic acid, succinic acid and salts thereof is provided, and, by using the photosensitive solution, colored picture cells having excellent adherence with a substrate can be uniformly formed without unevenness, while leaving no un-dissolved substance onto non-cell parts on a substrate.Type: ApplicationFiled: June 27, 2001Publication date: February 7, 2002Inventors: Kazuo Takebe, Toshiya Inoue, Kiyoharu Nakatsuka
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Publication number: 20010004511Abstract: A pigment-dispersion photo-sensitive coating solution comprising a binder resin, an organic-solvent and a main pigment dispersed in the solvent, wherein the combined area of peaks detected at a relative retention ratio in the range of 0.68 to 0.72 based on a retention time of dibutyl phthalate and peaks detected at a relative retention ratio in the range of 1.06 to 1.10 based on a retention time of dibutyl phthalate is not more than 50% of the total area of all peaks when the pigment is extracted by ethyl acetate and the extracts are analyzed by high-speed liquid chromatography using dibutyl phthalate as internal standard, is provided and use of the coating solution ensures that the colored image of stable quality is formed.Type: ApplicationFiled: December 13, 2000Publication date: June 21, 2001Inventors: Kazuo Takebe, Takao Mori, Shigeo Hozumi
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Patent number: 5750789Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.Type: GrantFiled: September 29, 1995Date of Patent: May 12, 1998Assignee: Sumitomo Chemical Company LimitedInventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
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Patent number: 5646204Abstract: An epoxy resin composition comprising (A) an epoxy resin represented by the general formula (1) ##STR1## wherein each R.sub.1, independent of the other, represents hydrogen, a hologen atom, an alkyl group having 1 to 6 carbon atoms, substituted- or nonsubstituted-phenyl groups, and X represents ##STR2## and n represents an integer of 0 to 4, and (B) a curing agent, which composition provides a cured product exhibiting low hygroscopicity and high adhesiveness.Type: GrantFiled: September 8, 1995Date of Patent: July 8, 1997Assignee: Sumitomo Chemical Company, LimitedInventors: Masatsugu Akiba, Yutaka Shiomi, Kazuo Takebe, Noriaki Saito, Takashi Morimoto
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Patent number: 5560968Abstract: A process for encapsulating a semiconductor device involves the step(s) of encapsulating the device with an epoxy resin composites represented by the formula (2) ##STR1## in which R.sub.1 to R.sub.4 independently represent hydrogen, an alkyl or cycloalkyl group having 1 to 9 carbon atoms, or halogen, and X represents hydrogen, an alkyl group having 1 to 9 carbon atoms, or an aryl and n represents an average number of repeating units of 0.1 to 1.6; and a curing agent.Type: GrantFiled: June 5, 1995Date of Patent: October 1, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Noriaki Saito, Takashi Morimoto, Kazuo Takebe, Yutaka Shiomi, Shigeki Naitoh, Shuichi Kanagawa
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Patent number: 5498687Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.Type: GrantFiled: March 28, 1995Date of Patent: March 12, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
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Patent number: 5478871Abstract: The present invention provides polyhydric phenols which are starting materials for glycidyl ether compounds which can provide cured products having low moisture absorption, high heat resistance and improved crack resistance and can be used for encapsulating semiconductor devices. The polyhydric phenols are represented by the following formula: ##STR1## wherein R.sup.1 independently represents a halogen atom, an alkyl or cycloalkyl group of 1-9 carbon atoms, an alkoxy group of 4 or less carbon atoms or an aryl group and R.sup.1 may be identical or different when l is 2 or more, R.sup.2 independently represents a halogen atom, an alkoxy group of 4 or less carbon atoms or an alkyl group of 6 or less carbon atoms and R.sup.2 may be identical or different when m is 2 or more, R.sup.Type: GrantFiled: August 8, 1994Date of Patent: December 26, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuo Takebe, Takashi Morimoto, Yutaka Shiomi, Yasuhide Sugiyama, Shigeki Naitoh, Noriaki Saito, Shuichi Kanagawa, Kunimasa Kamio
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Patent number: 5462997Abstract: An epoxy resin composition contains (a) an epoxy resin represented by the general formula (2) ##STR1## wherein R.sub.1 to R.sub.4 independently represent hydrogen, an alkyl or cycloalkyl group having 1 to 9 carbon atoms, or halogen, and X represents hydrogen, an alkyl group having 1 to 9 carbon atoms, or an aryl and n represents an average number of repeating units of 0.1 to 1.6; and a curing agent.Type: GrantFiled: October 27, 1994Date of Patent: October 31, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Noriaki Saito, Takashi Morimoto, Kazuo Takebe, Yutaka Shiomi, Shigeki Naitoh, Shuichi Kanagawa
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Patent number: 5444165Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.Type: GrantFiled: February 25, 1994Date of Patent: August 22, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
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Patent number: 5395912Abstract: There is provided an epoxy resin composition represented by the general formula: ##STR1## wherein R.sub.1 represents an alkyl or cycloalkyl group having 1 to 9 carbon atoms, or halogen, R.sub.2 to R.sub.4 independently represent hydrogen, an alkyl or cycloalkyl group having 1 to 9 carbon atoms, or halogen, and X represents hydrogen, an alkyl group having 1 to 9 carbon atoms, or an aryl group, and n represents an average number of repeating units of 0.1 to 1.6. Cured products prepared from the epoxy resin have a lower hygroscopicity and a balance between thermal resistance and curing performance.Type: GrantFiled: November 22, 1993Date of Patent: March 7, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Noriaki Saito, Takashi Morimoto, Kazuo Takebe, Yutaka Shiomi, Shigeki Naitoh, Shuichi Kanagawa
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Patent number: 5329047Abstract: A thermosetting resin composition useful for a copper-clad laminate is provided, which comprise (A) an aromatic diamine compound represented by the following formula: ##STR1## wherein Ar is a divalent aromatic residue, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is an allyl group or a hydrogen atom but at least one of them is an allyl group, and (B) a polymaleimide compound having two or more maleimide groups in a molecule thereof.Type: GrantFiled: December 13, 1991Date of Patent: July 12, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Shigeki Naitoh, Yasuhisa Saito, Yasuhiro Hirano, Kazuo Takebe, Kunimasa Kamio, Youichi Ueda
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Patent number: 5326881Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.Type: GrantFiled: October 28, 1993Date of Patent: July 5, 1994Assignee: Sumitomo Chemical Company Ltd.Inventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
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Patent number: 5252687Abstract: A thermosetting resin composition is provide, which contains a compound of ##STR1## wherein substituents R.sub.1 -R.sub.6 each represents a hydrogen atom or a saturated alkyl group having 1-6 carbon atoms, substituents R.sup.7 -R.sup.12 each represents a hydrogen atom, a saturated alkyl group having 1-4 carbon atoms or an alkoxy group having 1-4 carbon atoms, X.sub.a -X.sub.e each represents a hydrogen atom, a chlorine atom or a bromine atome, and the average repeating unit number n denotes a numeral from 0 to 5, and a polyamide compound having two or more maleimide groups and, if desired, a compound of ##STR2## wherein R.sub.1 and R.sub.2 each represents a methyl group or a phenyl group, and R.sub.3 represents a hydrogen atom or a functional group containing an amino group, a glycidyl group or an alicylic epoxy group, l denotes a numeral in the range of 0-500, and m denotes a numeral in the range of 1-500, or ##STR3## wherein R.sub.1 and R.sub.2 each represents a methyl group or a phenyl group, and R.sub.Type: GrantFiled: March 29, 1991Date of Patent: October 12, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Yutaka Shiomi, Shigeki Naitoh, Yasuhiro Hirano, Kazuo Takebe