Patents by Inventor Tomohisa Fujisawa

Tomohisa Fujisawa 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: 10520815
    Abstract: A pattern-forming method includes applying a radiation-sensitive composition on a substrate to provide a film on the substrate. The film is exposed. The film exposed is developed. The radiation-sensitive composition includes a metal-containing component that is a metal compound having a hydrolyzable group, a hydrolysis product of the metal compound having a hydrolyzable group, a hydrolytic condensation product of the metal compound having a hydrolyzable group, or a combination thereof. A content of a transition metal atom in the metal-containing component with respect to total metal atoms in the metal-containing component is no less than 50 atomic %.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 31, 2019
    Assignee: JSR CORPORATION
    Inventors: Takehiko Naruoka, Tomohisa Fujisawa, Motohiro Shiratani, Hisashi Nakagawa
  • Publication number: 20180017864
    Abstract: A pattern-forming method includes applying a radiation-sensitive composition on a substrate to provide a film on the substrate. The film is exposed. The film exposed is developed. The radiation-sensitive composition includes a metal-containing component that is a metal compound having a hydrolyzable group, a hydrolysis product of the metal compound having a hydrolyzable group, a hydrolytic condensation product of the metal compound having a hydrolyzable group, or a combination thereof. A content of a transition metal atom in the metal-containing component with respect to total metal atoms in the metal-containing component is no less than 50 atomic %.
    Type: Application
    Filed: March 16, 2017
    Publication date: January 18, 2018
    Applicant: JSR CORPORATION
    Inventors: Takehiko NARUOKA, Tomohisa FUJISAWA, Motohiro SHIRATANI, Hisashi NAKAGAWA
  • Publication number: 20170184960
    Abstract: A pattern-forming method includes applying a radiation-sensitive composition on a substrate to provide a film on the substrate. The film is exposed. The film exposed is developed. The radiation-sensitive composition includes a metal-containing component that is a metal compound having a hydrolyzable group, a hydrolysis product of the metal compound having a hydrolyzable group, a hydrolytic condensation product of the metal compound having a hydrolyzable group, or a combination thereof. A content of a transition metal atom in the metal-containing component with respect to total metal atoms in the metal-containing component is no less than 50 atomic %.
    Type: Application
    Filed: March 16, 2017
    Publication date: June 29, 2017
    Applicant: JSR CORPORATION
    Inventors: Takehiko NARUOKA, Tomohisa FUJISAWA, Motohiro SHIRATANI, Hisashi NAKAGAWA
  • Patent number: 8815490
    Abstract: The radiation-sensitive resin composition includes a first polymer, a second polymer and a radiation sensitive acid generator. The first polymer includes a repeating unit represented by formula (1). The second polymer includes an acid labile group and is dissociated by an action of acid so that alkali solubility is given by dissociation of said acid labile group. R1 represents a hydrogen atom, a methyl group or a trifluoromethyl group. R2 represents a single bond or a divalent linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 1-20 carbon atoms. X represents a fluorine atom-substituted methylene group or a linear or branched fluoroalkylene group having 2-20 carbon atoms. R3 represents a hydrogen atom or a monovalent organic group.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: August 26, 2014
    Assignee: JSR Corporation
    Inventors: Yasuhiko Matsuda, Tomohisa Fujisawa, Yukari Hama, Takanori Kawakami
  • Publication number: 20120094234
    Abstract: The radiation-sensitive resin composition includes a first polymer, a second polymer and a radiation sensitive acid generator. The first polymer includes a repeating unit represented by formula (1). The second polymer includes an acid labile group and is dissociated by an action of acid so that alkali solubility is given by dissociation of said acid labile group. R1 represents a hydrogen atom, a methyl group or a trifluoromethyl group. R2 represents a single bond or a divalent linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 1-20 carbon atoms. X represents a fluorine atom-substituted methylene group or a linear or branched fluoroalkylene group having 2-20 carbon atoms. R3 represents a hydrogen atom or a monovalent organic group.
    Type: Application
    Filed: December 2, 2011
    Publication date: April 19, 2012
    Applicant: JSR Corporation
    Inventors: Yasuhiko MATSUDA, Tomohisa FUJISAWA, Yukari HAMA, Takanori KAWAKAMI
  • Publication number: 20110212401
    Abstract: A radiation-sensitive resin composition includes a resin, a photoacid generator, a fluorine-containing resin, and a lactone compound. The resin does not include a first fluorine-containing repeating unit. The resin includes a first repeating unit that becomes alkali-soluble due to an acid. The fluorine-containing resin includes a second fluorine-containing repeating unit and a second repeating unit that becomes alkali-soluble due to an acid. A content of the lactone compound in the radiation-sensitive resin composition is about 31 to about 200 parts by mass based on 100 parts by mass of the resin.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 1, 2011
    Applicant: JSR Corporation
    Inventors: Yukio NISHIMURA, Yasuhiko Matsuda, Hiroki Nakagawa, Tomohisa Fujisawa, Yukari Hama, Kazuki Kasahara
  • Patent number: 7935683
    Abstract: Disclosed is a complex which comprises a carbon nanotube and a modified polysaccharide having a backbone chain with the side thereof being introduced with monosaccharide or oligosaccharide residues. The polysaccharide is preferably ?-1,3-glucan. The complex is prepared by admixing a solution of the modified polysaccharide dissolved in an aprotic polar solvent or a strong alkali solution with an aqueous dispersion of the carbon nanotube, and incubating the mixture.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: May 3, 2011
    Assignees: Japan Science and Technology Agency, Mitsui Sugar Co., Ltd.
    Inventors: Masami Mizu, Seiji Shinkai, Teruaki Hasegawa, Munenori Numata, Tomohisa Fujisawa, Kazuo Sakurai
  • Publication number: 20080242854
    Abstract: Disclosed is a complex which comprises a carbon nanotube and a modified polysaccharide having a backbone chain with the side thereof being introduced with monosaccharide or oligosaccharide residues. The polysaccharide is preferably ?-1,3-glucan. The complex is prepared by admixing a solution of the modified polysaccharide dissolved in an aprotic polar solvent or a strong alkali solution with an aqueous dispersion of the carbon nanotube, and incubating the mixture.
    Type: Application
    Filed: May 16, 2006
    Publication date: October 2, 2008
    Inventors: Masami Mizu, Seiji Shinkai, Teruaki Hasegawa, Munenori Numata, Tomohisa Fujisawa, Kazuo Sakurai