Patents by Inventor Toshihisa Itoh
Toshihisa Itoh 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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SYSTEM AND METHOD FOR MANUFACTURING POLYAMIC ACID, AND SYSTEM AND METHOD FOR MANUFACTURING POLYIMIDE
Publication number: 20240327573Abstract: A polyamic acid manufacturing system for manufacturing a polyamic acid is disclosed using, as raw materials, a first solution in which a polyaddition-type first polymerizable compound is dissolved and a second solution in which a polyaddition-type second polymerizable compound that reacts with the first polymerizable compound through polyaddition is dissolved. The polyamic acid manufacturing system may include: a first supply part for supplying the first solution; a second supply part for supplying the second solution; a first combining part; and a first reaction part, thereby producing a first polymerization solution in which the polyamic acid is dissolved. Further, the polyamic acid manufacturing system may include: a first supply step of supplying the first solution; a second supply step of supplying the second solution; a first combining step; and a first reaction step, thereby producing a first polymerization solution in which the polyamic acid is dissolved.Type: ApplicationFiled: June 14, 2024Publication date: October 3, 2024Applicant: KANEKA CORPORATIONInventors: Tomoyuki Toyoda, Toshihisa Itoh, Hiroyuki Furutani, Kazuhiro Shimizu, Kiyoshi Yamaguchi -
System and method for manufacturing polyamic acid, and system and method for manufacturing polyimide
Patent number: 12054586Abstract: A polyamic acid manufacturing system for manufacturing a polyamic acid is disclosed using, as raw materials, a first solution in which a polyaddition-type first polymerizable compound is dissolved and a second solution in which a polyaddition-type second polymerizable compound that reacts with the first polymerizable compound through polyaddition is dissolved. The polyamic acid manufacturing system may include: a first supply part for supplying the first solution; a second supply part for supplying the second solution; a first combining part; and a first reaction part, thereby producing a first polymerization solution in which the polyamic acid is dissolved. Further, the polyamic acid manufacturing system may include: a first supply step of supplying the first solution; a second supply step of supplying the second solution; a first combining step; and a first reaction step, thereby producing a first polymerization solution in which the polyamic acid is dissolved.Type: GrantFiled: February 14, 2019Date of Patent: August 6, 2024Assignee: KANEKA CORPORATIONInventors: Tomoyuki Toyoda, Toshihisa Itoh, Hiroyuki Furutani, Kazuhiro Shimizu, Kiyoshi Yamaguchi -
SYSTEM AND METHOD FOR MANUFACTURING POLYAMIC ACID, AND SYSTEM AND METHOD FOR MANUFACTURING POLYIMIDE
Publication number: 20210002427Abstract: A polyamic acid manufacturing system for manufacturing a polyamic acid is disclosed using, as raw materials, a first solution in which a polyaddition-type first polymerizable compound is dissolved and a second solution in which a polyaddition-type second polymerizable compound that reacts with the first polymerizable compound through polyaddition is dissolved. The polyamic acid manufacturing system may include: a first supply part for supplying the first solution; a second supply part for supplying the second solution; a first combining part; and a first reaction part, thereby producing a first polymerization solution in which the polyamic acid is dissolved. Further, the polyamic acid manufacturing system may include: a first supply step of supplying the first solution; a second supply step of supplying the second solution; a first combining step; and a first reaction step, thereby producing a first polymerization solution in which the polyamic acid is dissolved.Type: ApplicationFiled: February 14, 2019Publication date: January 7, 2021Applicant: KANEKA CORPORATIONInventors: Tomoyuki Toyoda, Toshihisa Itoh, Hiroyuki Furutani, Kazuhiro Shimizu, Kiyoshi Yamaguchi -
Patent number: 9441082Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: GrantFiled: December 24, 2014Date of Patent: September 13, 2016Assignee: KANEKA CORPORATIONInventors: Hisayasu Kaneshiro, Toshihisa Itoh, Kiyokazu Akahori
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Publication number: 20150119534Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: ApplicationFiled: December 24, 2014Publication date: April 30, 2015Applicant: KANEKA CORPORATIONInventors: Hisayasu KANESHIRO, Toshihisa Itoh, Kiyokazu Akahori
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Publication number: 20150118472Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: ApplicationFiled: December 24, 2014Publication date: April 30, 2015Applicant: KANEKA CORPORATIONInventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori
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Patent number: 8962790Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: GrantFiled: February 13, 2007Date of Patent: February 24, 2015Assignee: Kaneka CorporationInventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori
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Publication number: 20080038568Abstract: The present invention relates to a method for continuously producing a synthetic resin film that has stable physical properties across the full width and that is useful for an electronic field. In particular, the present invention relates to a method for continuously producing a synthetic resin film having molecular orientation controlled in the MD direction. That is, the present invention provides a method for continuously producing a synthetic resin film, the method including (A) a step of continuously flow-casting and applying a composition containing a polymer and an organic solvent onto a support to form a gel film; (B) a step of stripping the gel film from the support and fixing both ends of the gel film; and (C) a step of transporting the film with both ends being fixed in a oven, wherein in at least part of step (C), the film is fixed so that substantially no tension is applied in the width direction of the film (TD direction).Type: ApplicationFiled: February 21, 2005Publication date: February 14, 2008Applicant: KANEKA CORPORATIONInventors: Kan Fujihara, Kazuhiro Ono, Toshihisa Itoh, Takaaki Matsuwaki
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Publication number: 20070138690Abstract: It is an object of the present invention to provide a stable process for continuously producing a synthetic resin film oriented in the machine direction across the full width. The present invention provides a process for producing a synthetic resin film including step (A) of casting and applying a composition containing a polymer and an organic solvent onto a support to form a gel film; step (B) of stripping the gel film and heating the gel film with both ends being fixed; and step (C) of heating the film with both ends being released after step (B), wherein the thickness b of the film produced in step (B) and the thickness c of the film produced in step (C) satisfy the relationship: b>c.Type: ApplicationFiled: February 8, 2005Publication date: June 21, 2007Applicant: Kaneka CorporationInventors: Takaaki Matsuwaki, Kazuhiro Ono, Kan Fujihara, Toshihisa Itoh, Kiyokazu Akahori
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Publication number: 20070129533Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: ApplicationFiled: February 13, 2007Publication date: June 7, 2007Applicant: KANEKA CORPORATIONInventors: Hisayasu KANESHIRO, Toshihisa ITOH, Katsunori YABUTA, Kiyokazu AKAHORI
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Publication number: 20070071910Abstract: A novel organic insulating film, which is continuously manufactured and has specific properties over the entire width an adhesive film, a flexible metal plated stacked board, a multiplayer flexible metal-plated stacked board, a coverlay film, a tape for TAB, a base tape for COF are provided. The continuously manufactured organic insulating film satisfies the following requirements (1)-(3) over the entire width; (1) a film MOR-c value is 1.05 or more but not more than 5.0, (2) a molecular chain main axis orientation angle is ?30 to 30 degree against MD direction, and (3) a difference between the maximum and the minimum values of the film MOR-c is 1.0 or below.Type: ApplicationFiled: September 1, 2006Publication date: March 29, 2007Applicant: KANEKA CORPORATIONInventors: Kazuhiro Ono, Kan Fujihara, Takaaki Matsuwaki, Toshihisa Itoh
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Publication number: 20070045895Abstract: It is an object of the present invention to provide a stable process for continuously producing a synthetic resin film oriented in the machine direction across the full width. The present invention provides a process for producing a synthetic resin film including step (A) of casting and applying a composition containing a polymer and an organic solvent onto a support to form a gel film; step (B) of stripping the gel film and heating the gel film with both ends being fixed; and step (C) of heating the film with both ends being released after step (B), wherein the thickness b of the film produced in step (B) and the thickness c of the film produced in step (C) satisfy the relationship: b>c.Type: ApplicationFiled: August 24, 2006Publication date: March 1, 2007Applicant: KANEKA CORPORATIONInventors: Takaaki Matsuwaki, Kazuhiro Ono, Kan Fujihara, Toshihisa Itoh, Kiyokazu Akahori
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Publication number: 20050238896Abstract: A polyimide film having improved adhesion strength is produced by forming a partially cured and/or dried gel film using a first polyamic acid solution; coating the gel film with the second polyamic acid solution or immersing the gel film in the second polyamic acid solution; and heating the gel film applied with the second polyamic acid solution. By laminating a metal by vapor deposition, sputtering, ion plating, or the like, directly on the polyimide film, a polyimide/metal laminate is provided which has excellent dimensional stability and in which reliability with respect to adhesion between the polyimide film and the metal is improved.Type: ApplicationFiled: May 20, 2003Publication date: October 27, 2005Inventors: Toshihisa Itoh, Kan Fujihara, Kazuhiro Ono, Shirou Sasaki, Kiyokazu Akahori
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Publication number: 20040063900Abstract: A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component.Type: ApplicationFiled: August 18, 2003Publication date: April 1, 2004Inventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori