Patents by Inventor Mitsuru Ishi

Mitsuru Ishi 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).

  • Photosensitive resin composition, photosensitive element, resist pattern manufacturing method, and printed circuit board manufacturing method
    Patent number: 8460853
    Abstract: A photosensitive resin composition comprising a (A) binder polymer, a (B) photopolymerizing compound having ethylenic unsaturated bonds in the molecule, a (C) photopolymerization initiator and a (D) polymerization inhibitor, wherein the (C) photopolymerization initiator comprises an acridine compound, and the content of the (D) polymerization inhibitor is 20-100 ppm by weight.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: June 11, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yoshiki Ajioka, Mitsuru Ishi, Junichi Iso
  • Photosensitive resin composition, photosensitive element, method for forming resist pattern and method for manufacturing printed wiring board
    Patent number: 8460852
    Abstract: A photosensitive resin composition comprising (A) a binder polymer, (B) a photopolymerizing compound having an ethylenic unsaturated bond in the molecule, (C) a photopolymerization initiator and (D) a polymerization inhibitor, wherein the content of the (D) polymerization inhibitor is 20-100 ppm by mass based on the total solid content of the composition.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: June 11, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yoshiki Ajioka, Mitsuru Ishi, Junichi Iso
  • PHOTOSENSITIVE RESIN COMPOSITION, AND PHOTOSENSITIVE ELEMENT, RESIST PATTERN FORMATION METHOD AND PRINTED CIRCUIT BOARD PRODUCTION METHOD EACH UTILIZING SAME
    Publication number: 20120040290
    Abstract: The present invention relates to a photosensitive resin composition comprising (A) a binder polymer, (B) a photopolymerizable compound having an ethylenically unsaturated bond and (C) a photopolymerization initiator, wherein the (C) photopolymerization initiator comprises a compound represented by the following general formula (1). In formula (1), R1 represents a halogen atom, an amino group, a carboxyl group, a C1-6 alkyl group, a C1-6 alkoxy group or a C1-6 alkylamino group and m represents an integer of 1 to 5.
    Type: Application
    Filed: February 23, 2010
    Publication date: February 16, 2012
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yoshiki Ajioka, Mitsuru Ishi, Junichi Iso, Manami Usuba
  • PHOTOSENSITIVE RESIN COMPOSITION, PHOTOSENSITIVE ELEMENT, METHOD FOR FORMING RESIST PATTERN AND METHOD FOR MANUFACTURING PRINTED WIRING BOARD
    Publication number: 20110111344
    Abstract: A photosensitive resin composition comprising (A) a binder polymer, (B) a photopolymerizing compound having an ethylenic unsaturated bond in the molecule, (C) a photopolymerization initiator and (D) a polymerization inhibitor, wherein the content of the (D) polymerization inhibitor is 20-100 ppm by mass based on the total solid content of the composition.
    Type: Application
    Filed: April 24, 2009
    Publication date: May 12, 2011
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yoshiki Ajioka, Mitsuru Ishi, Junichi Iso
  • PHOTOSENSITIVE RESIN COMPOSITION, PHOTOSENSITIVE ELEMENT, RESIST PATTERN MANUFACTURING METHOD, AND PRINTED CIRCUIT BOARD MANUFACTURING METHOD
    Publication number: 20110081616
    Abstract: A photosensitive resin composition comprising a (A) binder polymer, a (B) photopolymerizing compound having ethylenic unsaturated bonds in the molecule, a (C) photopolymerization initiator and a (D) polymerization inhibitor, wherein the (C) photopolymerization initiator comprises an acridine compound, and the content of the (D) polymerization inhibitor is 20-100 ppm by weight.
    Type: Application
    Filed: April 24, 2009
    Publication date: April 7, 2011
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yoshiki Ajioka, Mitsuru Ishi, Junichi Iso