Patents by Inventor Yoshiki Ajioka

Yoshiki Ajioka 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).

  • 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
  • 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
  • Patent number: 8263313
    Abstract: The invention provides a photosensitive resin composition that can form resists with excellent adhesiveness for conductive layers and that does not easily produce conductive layer discoloration, as well as a photosensitive film employing the composition. A preferred photosensitive film (1) according to the invention comprises a support (11), resin layer (12) and protective film (13), where the resin layer (12) is composed of a photosensitive resin composition comprising a binder polymer, a photopolymerizing compound, a photopolymerization initiator and a benzotriazole derivative represented by the following general formula (1).
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: September 11, 2012
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Katsutoshi Itagaki, Naoki Sasahara, Takuji Abe, Yoshiki Ajioka
  • 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
  • Patent number: 8101339
    Abstract: A photosensitive resin composition according to the invention comprises (A) a binder polymer, (B) a photopolymerizing compound with an ethylenic unsaturated group and (C) a photopolymerization initiator, wherein component (B) contains a compound represented by the following general formula (I). [Wherein R1-R3 each independently represent a group represented by the following general formula (II): or the following general formula (III): and at least one of R1-R3 is a group represented by general formula (III).
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: January 24, 2012
    Assignee: Hitachi Chemical Company, Ltd.
    Inventor: Yoshiki Ajioka
  • 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
  • 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
  • Publication number: 20100129752
    Abstract: The photosensitive resin composition of the present invention is a photosensitive resin composition comprising: (A) a binder polymer; (B) a photopolymerizable compound with at least one polymerizable ethylenic unsaturated group in the molecule; and (C) a photopolymerization initiator, wherein component (A) contains a polymer that contains a compound represented by the following general formula (I) as a polymerization component: CH2?C(L1)-COOL2??(I) (wherein L1 represents a hydrogen atom or methyl group and L2 represents a C2-20 alkyl group group) and component (B) contains a compound represented by the following general formula (II): (wherein R1 represents a hydrogen atom or methyl group, R2 represents a C3-20 alkyl group that has at least 2 tertiary or higher carbon atoms, X represents a C2-6 alkylene group, and n is an integer from 1 to 20).
    Type: Application
    Filed: May 15, 2006
    Publication date: May 27, 2010
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yoshiki Ajioka, Tatsuya Ichikawa, Mitsuo Matsuda, Takahiro Inatsugi
  • Publication number: 20090317746
    Abstract: ABSTRACT A photosensitive resin composition according to the invention comprises (A) a binder polymer, (B) a photopolymerizing compound with an ethylenic unsaturated group and (C) a photopolymerization initiator, wherein component (B) contains a compound represented by the following general formula (I). [Wherein R1-R3 each independently represent a group represented by the following general formula (II): or the following general formula (III): and at least one of R1-R3 is a group represented by general formula (III).
    Type: Application
    Filed: October 20, 2006
    Publication date: December 24, 2009
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventor: Yoshiki Ajioka
  • Publication number: 20090297981
    Abstract: The invention provides a photosensitive resin composition that can form resists with excellent adhesiveness for conductive layers and that does not easily produce conductive layer discoloration, as well as a photosensitive film employing the composition. A preferred photosensitive film (1) according to the invention comprises a support (11), resin layer (12) and protective film (13), where the resin layer (12) is composed of a photosensitive resin composition comprising a binder polymer, a photopolymerizing compound, a photopolymerization initiator and a benzotriazole derivative represented by the following general formula (1).
    Type: Application
    Filed: August 11, 2005
    Publication date: December 3, 2009
    Inventors: Katsutoshi Itagaki, Naoki Sasahara, Takuji Abe, Yoshiki Ajioka