Patents by Inventor Ikuo Mukai

Ikuo Mukai 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: 10663861
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: May 26, 2020
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Patent number: 10386719
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 20, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Patent number: 10353289
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: July 16, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Publication number: 20180321587
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 8, 2018
    Inventors: Yasuharu MURAKAMI, Hiroshi YAMAZAKI, Yoshimi IGARASHI, Naoki SASAHARA, Ikuo MUKAI
  • Patent number: 10042254
    Abstract: In the method for forming a protective coat on an electrode for a touch panel according to the invention, a photosensitive layer comprising a photosensitive resin composition containing a binder polymer having a carboxyl group and an acid value of 30 to 120 mgKOH/g, a photopolymerizable compound having at least three ethylenic unsaturated groups, and a photopolymerization initiator, is formed on a base material having an electrode for a touch panel, prescribed sections of the photosensitive layer are cured by irradiation with active light rays and then the sections other than the prescribed sections are removed, to form a protective coat comprising the cured sections of the photosensitive resin composition covering all or a portion of the electrode.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: August 7, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Ikuo Mukai, Yasuharu Murakami, Naoki Sasahara, Hiroshi Yamazaki
  • Patent number: 9971244
    Abstract: A photosensitive element 1 comprises a support film 10, a protective film (polypropylene film) 30, and a photosensitive layer 20 which is arranged between the support film 10 and the protective film 30, wherein the protective film 30 has a principal surface 30a at a side of the photosensitive layer 20 and a principal surface 30b at an opposite side of the principal surface 30a, and the principal surface 30a and the principal surface 30b are smooth.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 15, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Naoki Sasahara, Ikuo Mukai, Mayumi Sato, Yasuhiro Seri, Koji Abe, Manami Kiryu
  • Patent number: 9964849
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: May 8, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Publication number: 20170184965
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Application
    Filed: March 15, 2017
    Publication date: June 29, 2017
    Inventors: Yasuharu MURAKAMI, Hiroshi YAMAZAKI, Yoshimi IGARASHI, Naoki SASAHARA, Ikuo MUKAI
  • Publication number: 20170139325
    Abstract: By forming a refractive index-adjusting pattern by using a photosensitive refractive index-adjusting transfer film comprising a supporting film, a photosensitive resin layer provided on the supporting film, and a high-refractive index layer provided on the photosensitive resin layer, it is possible to form easily a cured film that can attain simultaneously prevention of pattern visibility phenomenon, prevention of lowering in transmittance of a screen and protection of a sensor metal wiring.
    Type: Application
    Filed: July 2, 2014
    Publication date: May 18, 2017
    Inventors: Mayumi SATO, Ikuo MUKAI, Tadahiro KIMURA, Naoki SASAHARA, Koji ABE, Hideo TAKAHASHI
  • Publication number: 20160357102
    Abstract: In the method for forming a protective coat on an electrode for a touch panel according to the invention, a photosensitive layer comprising a photosensitive resin composition containing a binder polymer having a carboxyl group and an acid value of 30 to 120 mgKOH/g, a photopolymerizable compound having at least three ethylenic unsaturated groups, and a photopolymerization initiator, is formed on a base material having an electrode for a touch panel, prescribed sections of the photosensitive layer are cured by irradiation with active light rays and then the sections other than the prescribed sections are removed, to form a protective coat comprising the cured sections of the photosensitive resin composition covering all or a portion of the electrode.
    Type: Application
    Filed: August 18, 2016
    Publication date: December 8, 2016
    Inventors: Ikuo MUKAI, Yasuharu MURAKAMI, Naoki SASAHARA, Hiroshi YAMAZAKI
  • Patent number: 9488912
    Abstract: In the method for forming a protective coat on an electrode for a touch panel according to the invention, a photosensitive layer comprising a photosensitive resin composition containing a binder polymer having a carboxyl group and an acid value of 30 to 120 mgKOH/g, a photopolymerizable compound having at least three ethylenic unsaturated groups, and a photopolymerization initiator, is formed on a base material having an electrode for a touch panel, prescribed sections of the photosensitive layer are cured by irradiation with active light rays and then the sections other than the prescribed sections are removed, to form a protective coat comprising the cured sections of the photosensitive resin composition covering all or a portion of the electrode.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 8, 2016
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Ikuo Mukai, Yasuharu Murakami, Naoki Sasahara, Hiroshi Yamazaki
  • Publication number: 20160223906
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Application
    Filed: March 7, 2016
    Publication date: August 4, 2016
    Inventors: Yasuharu MURAKAMI, Hiroshi YAMAZAKI, Yoshimi IGARASHI, Naoki SASAHARA, Ikuo MUKAI
  • Patent number: 9348223
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: May 24, 2016
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Publication number: 20160131974
    Abstract: The method of manufacturing a transparent base material provided with a cured film according to the present invention is characterized in that a photosensitive layer composed of a photosensitive resin composition containing a binder polymer, a photopolymerizable compound containing at least one (meth)acrylate compound selected from the group consisting of (meth)acrylate compounds having a skeleton derived from ditrimethylolpropane and (meth)acrylate compounds having a skeleton derived from diglycerol, and a photopolymerization initiator is disposed on a transparent base material, a predetermined portion of the photosensitive layer is cured through irradiation with active light rays, and portions of the photosensitive layer other than the predetermined portion are then removed to form a cured film composed of a cured product of the photosensitive resin composition, the cured film coating part or all of the base material.
    Type: Application
    Filed: June 3, 2014
    Publication date: May 12, 2016
    Inventors: Koji ABE, Ikuo MUKAI, Mayumi SATO
  • Publication number: 20160077434
    Abstract: A photosensitive element 1 comprises a support film 10, a protective film (polypropylene film) 30, and a photosensitive layer 20 which is arranged between the support film 10 and the protective film 30, wherein the protective film 30 has a principal surface 30a at a side of the photosensitive layer 20 and a principal surface 30b at an opposite side of the principal surface 30a, and the principal surface 30a and the principal surface 30b are smooth.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 17, 2016
    Inventors: Naoki SASAHARA, Ikuo MUKAI, Mayumi SATO, Yasuhiro SERI, Koji ABE, Manami KIRYU
  • Publication number: 20140377704
    Abstract: In the method for forming a protective coat on an electrode for a touch panel according to the invention, a photosensitive layer comprising a photosensitive resin composition containing a binder polymer having a carboxyl group and an acid value of 30 to 120 mgKOH/g, a photopolymerizable compound having at least three ethylenic unsaturated groups, and a photopolymerization initiator, is formed on a base material having an electrode for a touch panel, prescribed sections of the photosensitive layer are cured by irradiation with active light rays and then the sections other than the prescribed sections are removed, to form a protective coat comprising the cured sections of the photosensitive resin composition covering all or a portion of the electrode.
    Type: Application
    Filed: December 4, 2012
    Publication date: December 25, 2014
    Inventors: Ikuo Mukai, Yasuharu Murakami, Naoki Sasahara, Hiroshi Yamazaki
  • Publication number: 20140363767
    Abstract: The method for forming a resin cured film pattern according to the invention comprises a first step in which there is formed on a base material a photosensitive layer composed of a photosensitive resin composition comprising a binder polymer with a carboxyl group having an acid value of 75 mgKOH/g or greater, a photopolymerizable compound and a photopolymerization initiator, and having a thickness of 10 ?m or smaller, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections of the photosensitive layer other than the prescribed sections are removed to form a cured film pattern of the prescribed sections of the photosensitive layer, wherein the photosensitive resin composition comprises an oxime ester compound and/or a phosphine oxide compound as the photopolymerization initiator.
    Type: Application
    Filed: December 4, 2012
    Publication date: December 11, 2014
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasuharu Murakami, Hiroshi Yamazaki, Yoshimi Igarashi, Naoki Sasahara, Ikuo Mukai
  • Publication number: 20140335350
    Abstract: The method for forming a protective coat on an electrode for a touch panel according to the invention comprises a first step in which a photosensitive layer comprising a photosensitive resin composition containing a binder polymer, a photopolymerizable compound and a photopolymerization initiator is provided on a base material having an electrode for a touch panel, a second step in which prescribed sections of the photosensitive layer are cured by irradiation with active light rays, and a third step in which the sections other than the prescribed sections of the photosensitive layer are removed to form a protective coat comprising the cured sections of the photosensitive layer covering all or a portion of the electrode, wherein the hydroxyl value of the photosensitive resin composition is no greater than 40 mgKOH/g.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 13, 2014
    Inventors: Hiroyuki Tanaka, Yasuharu Murakami, Naoki Sasahara, Ikuo Mukai, Yoshimi Igarashi, Masahiko Ebihara, Hiroshi Yamazaki
  • Patent number: 8604096
    Abstract: Provided are a photosensitive resin composition capable of being quickly cured by light and providing an optically cured product which is excellent in a transparency in a visible light of 400 to 780 nm and a heat resistant reliability, a photosensitive resin varnish, a photosensitive resin film and a photosensitive resin cured product. The photosensitive resin composition comprises (A) a polymerizable compound, (B) a polymerization initiator and (C) a hindered phenol base antioxidant, wherein (B-1) at least one selected from ?-hydroxyacetophenone base photoinitiator and a glyoxy ester base photoinitiator and (B-2) a phosphine oxide base photoinitiator are contained as the component (B); the component (C) is a hindered phenol base antioxidant having in a molecule, at least one phenol group having each one group of a methyl group and a t-butyl group on the same aromatic ring; a content of the component (B) is 0.02 to 4.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: December 10, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Kouji Suzumura, Ikue Mitani, Toshihiko Takasaki, Ikuo Mukai, Masami Ochiai
  • Publication number: 20120270963
    Abstract: Provided are a photosensitive resin composition capable of being quickly cured by light and providing an optically cured product which is excellent in a transparency in a visible light of 400 to 780 nm and a heat resistant reliability, a photosensitive resin varnish, a photosensitive resin film and a photosensitive resin cured product. The photosensitive resin composition comprises (A) a polymerizable compound, (B) a polymerization initiator and (C) a hindered phenol base antioxidant, wherein (B-1) at least one selected from ?-hydroxyacetophenone base photoinitiator and a glyoxy ester base photoinitiator and (B-2) a phosphine oxide base photoinitiator are contained as the component (B); the component (C) is a hindered phenol base antioxidant having in a molecule, at least one phenol group having each one group of a methyl group and a t-butyl group on the same aromatic ring; a content of the component (B) is 0.02 to 4.
    Type: Application
    Filed: November 29, 2010
    Publication date: October 25, 2012
    Inventors: Kouji Suzumura, Ikue Mitani, Toshihiko Takasaki, Ikuo Mukai, Masami Ochiai