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).

  • Publication number: 20210002427
    Abstract: 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: Application
    Filed: February 14, 2019
    Publication date: January 7, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Tomoyuki Toyoda, Toshihisa Itoh, Hiroyuki Furutani, Kazuhiro Shimizu, Kiyoshi Yamaguchi
  • Patent number: 9441082
    Abstract: 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: Grant
    Filed: December 24, 2014
    Date of Patent: September 13, 2016
    Assignee: KANEKA CORPORATION
    Inventors: Hisayasu Kaneshiro, Toshihisa Itoh, Kiyokazu Akahori
  • Publication number: 20150118472
    Abstract: 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: Application
    Filed: December 24, 2014
    Publication date: April 30, 2015
    Applicant: KANEKA CORPORATION
    Inventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori
  • Publication number: 20150119534
    Abstract: 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: Application
    Filed: December 24, 2014
    Publication date: April 30, 2015
    Applicant: KANEKA CORPORATION
    Inventors: Hisayasu KANESHIRO, Toshihisa Itoh, Kiyokazu Akahori
  • Patent number: 8962790
    Abstract: 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: Grant
    Filed: February 13, 2007
    Date of Patent: February 24, 2015
    Assignee: Kaneka Corporation
    Inventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori
  • Publication number: 20080038568
    Abstract: 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: Application
    Filed: February 21, 2005
    Publication date: February 14, 2008
    Applicant: KANEKA CORPORATION
    Inventors: Kan Fujihara, Kazuhiro Ono, Toshihisa Itoh, Takaaki Matsuwaki
  • Publication number: 20070138690
    Abstract: 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: Application
    Filed: February 8, 2005
    Publication date: June 21, 2007
    Applicant: Kaneka Corporation
    Inventors: Takaaki Matsuwaki, Kazuhiro Ono, Kan Fujihara, Toshihisa Itoh, Kiyokazu Akahori
  • Publication number: 20070129533
    Abstract: 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: Application
    Filed: February 13, 2007
    Publication date: June 7, 2007
    Applicant: KANEKA CORPORATION
    Inventors: Hisayasu KANESHIRO, Toshihisa ITOH, Katsunori YABUTA, Kiyokazu AKAHORI
  • Publication number: 20070071910
    Abstract: 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: Application
    Filed: September 1, 2006
    Publication date: March 29, 2007
    Applicant: KANEKA CORPORATION
    Inventors: Kazuhiro Ono, Kan Fujihara, Takaaki Matsuwaki, Toshihisa Itoh
  • Publication number: 20070045895
    Abstract: 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: Application
    Filed: August 24, 2006
    Publication date: March 1, 2007
    Applicant: KANEKA CORPORATION
    Inventors: Takaaki Matsuwaki, Kazuhiro Ono, Kan Fujihara, Toshihisa Itoh, Kiyokazu Akahori
  • Publication number: 20050238896
    Abstract: 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: Application
    Filed: May 20, 2003
    Publication date: October 27, 2005
    Inventors: Toshihisa Itoh, Kan Fujihara, Kazuhiro Ono, Shirou Sasaki, Kiyokazu Akahori
  • Publication number: 20040063900
    Abstract: 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: Application
    Filed: August 18, 2003
    Publication date: April 1, 2004
    Inventors: Hisayasu Kaneshiro, Toshihisa Itoh, Katsunori Yabuta, Kiyokazu Akahori