Patents by Inventor Yune KUMAZAWA
Yune KUMAZAWA 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: 11767287Abstract: A compound (A) of the present invention is represented by the formula (1): wherein each R1 independently represents a group represented by the formula (2) or a hydrogen atom, and each R2 independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms, provided that at least one R1 is a group represented by the formula (2); and wherein -* represents a bonding hand.Type: GrantFiled: December 9, 2020Date of Patent: September 26, 2023Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shunsuke Katagiri, Takuya Suzuki, Seiji Shika, Yune Kumazawa
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Patent number: 11680139Abstract: A resin composition of the present invention is a resin composition containing a bismaleimide compound (A) containing a constituent unit represented by the following formula (1), and maleimide groups at both ends of the molecular chain, at least one resin or compound (B) selected from the group consisting of a maleimide compound other than the bismaleimide compound (A), a cyanate compound, a benzoxazine compound, an epoxy resin, a carbodiimide compound, and a compound having an ethylenically unsaturated group, and a photo initiator (C): wherein R1 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms; R2 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms; each R3 independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 16 carbon atoms, or a linear or branched alkenyl group having 2 to 16 carbonType: GrantFiled: June 26, 2020Date of Patent: June 20, 2023Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune Kumazawa, Takuya Suzuki, Seiji Shika, Shunsuke Katagiri
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Patent number: 11643493Abstract: Provided is a resin composition which has good solubility and photocurability, further has good alkaline-developability when containing a photo initiator and a compound containing one or more carboxyl groups, and in addition, is capable of providing a resin sheet having suppressed tackiness; and a resin sheet, multilayer printed wiring board, and semiconductor device using the same. The resin composition of the present invention contains a particular bismaleimide compound (A), and at least two maleimide compounds (B) selected from the group consisting of six kinds of particular compounds which are different from this bismaleimide compound (A).Type: GrantFiled: December 9, 2020Date of Patent: May 9, 2023Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune Kumazawa, Takuya Suzuki, Seiji Shika, Shunsuke Katagiri
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Publication number: 20230066153Abstract: Provided is a resin composition which has good solubility and photocurability, further has good alkaline-developability when containing a photo initiator and a compound containing one or more carboxyl groups, and in addition, is capable of providing a resin sheet having suppressed tackiness; and a resin sheet, multilayer printed wiring board, and semiconductor device using the same. The resin composition of the present invention contains a particular bismaleimide compound (A), and at least two maleimide compounds (B) selected from the group consisting of six kinds of particular compounds which are different from this bismaleimide compound (A).Type: ApplicationFiled: December 9, 2020Publication date: March 2, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune KUMAZAWA, Takuya SUZUKI, Seiji SHIKA, Shunsuke KATAGIRI
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Publication number: 20230062796Abstract: The compound (A) is represented by formula (1). R1O—R2—OR1?? (1) (In formula (1), each R1 independently represents a group represented by formula (2), or a hydrogen atom, and R2 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms, provided that at least one R1 is a group represented by formula (2).) (In formula (2), -* represents a bonding hand.Type: ApplicationFiled: December 9, 2020Publication date: March 2, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shunsuke KATAGIRI, Takuya SUZUKI, Seiji SHIKA, Yune KUMAZAWA
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Publication number: 20230057045Abstract: A compound (A) of the present invention is represented by the formula (1): wherein each R1 independently represents a group represented by the formula (2) or a hydrogen atom, and each R2 independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms, provided that at least one R1 is a group represented by the formula (2); and wherein -* represents a bonding hand.Type: ApplicationFiled: December 9, 2020Publication date: February 23, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shunsuke KATAGIRI, Takuya SUZUKI, Seiji SHIKA, Yune KUMAZAWA
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Patent number: 11466123Abstract: The resin composition of the present invention is a resin composition containing: a bismaleimide compound (A) containing a constituent unit represented by the following formula (1) and maleimide groups at both ends of the molecular chain; a compound (B) containing one or more carboxy groups; and a photo initiator (C). In the formula (1), R1 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms. R2 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms. Each R3 independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 16 carbon atoms, or a linear or branched alkenyl group having 2 to 16 carbon atoms. Each n independently represents an integer of 1 to 10.Type: GrantFiled: June 26, 2020Date of Patent: October 11, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune Kumazawa, Takuya Suzuki, Seiji Shika, Shunsuke Katagiri
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Patent number: 11447658Abstract: The resin composition of the present invention contains a maleimide compound (A) represented by the following formula (1); and a photo initiator (B) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line). In the formula (1), R1, R2, and R3 each independently represent an alkyl group or an alkoxy group which may have a hydrogen atom, a halogen atom, a hydroxyl group, or a substituent, R4 represents an alkylene group, an alkenylene group, an alkoxylene group, or an arylene group which may have a substituent, and R5 and R6 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or a linear or branched alkenyl group having 1 to 6 carbon atoms.Type: GrantFiled: June 26, 2020Date of Patent: September 20, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shunsuke Katagiri, Takuya Suzuki, Seiji Shika, Yune Kumazawa
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Publication number: 20220204695Abstract: The resin composition of the present invention is a resin composition containing: a bismaleimide compound (A) containing a constituent unit represented by the following formula (1) and maleimide groups at both ends of the molecular chain; a compound (B) containing one or more carboxy groups; and a photo initiator (C). In the formula (1), R1 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms. R2 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms. Each R3 independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 16 carbon atoms, or a linear or branched alkenyl group having 2 to 16 carbon atoms. Each n independently represents an integer of 1 to 10.Type: ApplicationFiled: June 26, 2020Publication date: June 30, 2022Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune KUMAZAWA, Takuya SUZUKI, Seiji SHIKA, Shunsuke KATAGIRI
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Publication number: 20220204810Abstract: The resin composition of the present invention contains a maleimide compound (A) represented by the following formula (1); and a photo initiator (B) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line). In the formula (1), R1, R2, and R3 each independently represent an alkyl group or an alkoxy group which may have a hydrogen atom, a halogen atom, a hydroxyl group, or a substituent, R4 represents an alkylene group, an alkenylene group, an alkoxylene group, or an arylene group which may have a substituent, and R5 and R6 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or a linear or branched alkenyl group having 1 to 6 carbon atoms.Type: ApplicationFiled: June 26, 2020Publication date: June 30, 2022Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shunsuke KATAGIRI, Takuya SUZUKI, Seiji SHIKA, Yune KUMAZAWA
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Publication number: 20220204694Abstract: A resin composition of the present invention is a resin composition containing a bismaleimide compound (A) containing a constituent unit represented by the following formula (1), and maleimide groups at both ends of the molecular chain, at least one resin or compound (B) selected from the group consisting of a maleimide compound other than the bismaleimide compound (A), a cyanate compound, a benzoxazine compound, an epoxy resin, a carbodiimide compound, and a compound having an ethylenically unsaturated group, and a photo initiator (C): wherein R1 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms; R2 represents a linear or branched alkylene group having 1 to 16 carbon atoms, or a linear or branched alkenylene group having 2 to 16 carbon atoms; each R3 independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 16 carbon atoms, or a linear or branched alkenyl group having 2 to 16 carbonType: ApplicationFiled: June 26, 2020Publication date: June 30, 2022Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune KUMAZAWA, Takuya SUZUKI, Seiji SHIKA, Shunsuke KATAGIRI
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Patent number: 11370857Abstract: A resin composition of the present invention contains: a maleimide compound (A) having a maleimide functional group equivalent of 300 g/eq. or more, and a transmittance of 1% or more at a wavelength of 405 nm (h-line); a maleimide compound (B) having a maleimide functional group equivalent of less than 300 g/eq.; and a photo initiator (C) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line).Type: GrantFiled: August 28, 2019Date of Patent: June 28, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune Kumazawa, Takuya Suzuki, Seiji Shika
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Publication number: 20220071025Abstract: A resin composition of the present invention contains: a maleimide compound (A) having a transmittance of 5% or more at a wavelength of 405 nm (h-line); a particular carboxylic acid containing compound (B); and a photo initiator (C) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line).Type: ApplicationFiled: January 17, 2020Publication date: March 3, 2022Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune KUMAZAWA, Takuya SUZUKI, Seiji SHIKA
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Publication number: 20210206892Abstract: A resin composition of the present invention contains: a maleimide compound (A) having a maleimide functional group equivalent of 300 g/eq. or more, and a transmittance of 1% or more at a wavelength of 405 nm (h-line); a maleimide compound (B) having a maleimide functional group equivalent of less than 300 g/eq.; and a photo initiator (C) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line).Type: ApplicationFiled: August 28, 2019Publication date: July 8, 2021Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yune KUMAZAWA, Takuya SUZUKI, Seiji SHIKA