Patents by Inventor Yuho Noguchi

Yuho Noguchi 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).

  • Polyimide precursor composition containing polyamic acid alkyl ester
    Patent number: 8829153
    Abstract: To provide a polyamic acid ester-containing polyimide precursor composition having a good storage stability, from which a polyimide film having a high imidization degree and excellent adhesion to an inorganic substrate can be obtained. A polyimide precursor composition comprising a polyamic acid ester, a thermal imidization accelerator and a solvent, wherein the thermal imidization accelerator is a compound which has a carboxy group and an amino group or an imino group which is deprotected by heat to show basicity, and which will not accelerate the imidization of the polyamic acid ester before the protecting group leaves, and a polyimide precursor composition containing a silane coupling agent.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 9, 2014
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Naoki Sakumoto, Masato Nagao, Yuho Noguchi
  • POLYIMIDE PRECURSOR COMPOSITION CONTAINING POLYAMIC ACID ALKYL ESTER
    Publication number: 20120101236
    Abstract: To provide a polyamic acid ester-containing polyimide precursor composition having a good storage stability, from which a polyimide film having a high imidization degree and excellent adhesion to an inorganic substrate can be obtained. A polyimide precursor composition comprising a polyamic acid ester, a thermal imidization accelerator and a solvent, wherein the thermal imidization accelerator is a compound which has a carboxy group and an amino group or an imino group which is deprotected by heat to show basicity, and which will not accelerate the imidization of the polyamic acid ester before the protecting group leaves, and a polyimide precursor composition containing a silane coupling agent.
    Type: Application
    Filed: April 1, 2010
    Publication date: April 26, 2012
    Applicant: Nissan Chemical Industries, Ltd.
    Inventors: Naoki Sakumoto, Masato Nagao, Yuho Noguchi