Patents by Inventor Hirotomo Sasaki

Hirotomo Sasaki 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: 11618833
    Abstract: The present invention provides an ink composition containing light-emitting nanocrystal particles and a photopolymerizable compound, wherein the photopolymerizable compound has a Log P value in the range of ?1.5 to 7.0. The present invention also provides an ink composition containing light-emitting nanocrystal particles and a photopolymerizable compound, wherein the photopolymerizable compound has a Log P value in the range of ?1.0 to 6.5, and the ink composition has a water (H2O) content of 90 ppm or less measured with a Karl Fischer moisture meter. The present invention also provides a light conversion layer including a plurality of pixel units, wherein the plurality of pixel units include a pixel unit containing a cured product of the ink composition, and the light conversion layer is formed of the cured product of the ink composition. The present invention also provides a color filter including the light conversion layer.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 4, 2023
    Assignee: DIC CORPORATION
    Inventors: Sunao Yoshihara, Takayuki Miki, Hirotomo Sasaki, Ikuro Kiyoto, Minoru Tabuchi
  • Publication number: 20220019006
    Abstract: An aspect of the present invention is a color filter for converting an incident light from one surface of the color filter to a light having a wavelength different from that of the incident light and permitting the converted light to exit from another surface of the color filter, the color filter comprising: a bank having a plurality of opening portions and being formed to extend from the another surface to the one surface of the color filter; a plurality of pixel portions formed in the respective opening portions; and a reflective film formed so as to cover at least part of the side of the bank.
    Type: Application
    Filed: November 27, 2019
    Publication date: January 20, 2022
    Applicant: DIC Corporation
    Inventors: Shinya Sasaki, Hirotomo Sasaki
  • Publication number: 20210139730
    Abstract: A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.
    Type: Application
    Filed: December 24, 2020
    Publication date: May 13, 2021
    Applicant: DIC CORPORATION
    Inventors: Takeshi Isonaka, Yasuo Umezu, Hidehiko Yamaguchi, Yoshio Aoki, Hirotomo Sasaki, Sunao Yoshihara, Takayuki Miki, Aya Ishizuka, Takeo Kizaki
  • Patent number: 10947403
    Abstract: A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 16, 2021
    Assignee: DIC CORPORATION
    Inventors: Takeshi Isonaka, Yasuo Umezu, Hidehiko Yamaguchi, Yoshio Aoki, Hirotomo Sasaki, Sunao Yoshihara, Takayuki Miki, Aya Ishizuka, Takeo Kizaki
  • Publication number: 20200264461
    Abstract: An aspect of the present invention provides a light conversion film including light-emitting nanocrystalline particles configured to convert light having a predetermined wavelength into light of any of red, green, and blue and to emit the light, and a wavelength-selective transmission layer disposed on at least one side of the light conversion layer and configured to transmit light in a specific wavelength range.
    Type: Application
    Filed: September 20, 2018
    Publication date: August 20, 2020
    Applicant: DIC CORPORATION
    Inventors: Yasuhiro Kuwana, Hidetoshi Nakata, Hidehiko Yamaguchi, Takayuki Miki, Hirotomo Sasaki, Shunki Sakai
  • Publication number: 20200224047
    Abstract: The present invention provides an ink composition containing light-emitting nanocrystal particles and a photopolymerizable compound, wherein the photopolymerizable compound has a Log P value in the range of ?1.5 to 7.0. The present invention also provides an ink composition containing light-emitting nanocrystal particles and a photopolymerizable compound, wherein the photopolymerizable compound has a Log P value in the range of ?1.0 to 6.5, and the ink composition has a water (H2O) content of 90 ppm or less measured with a Karl Fischer moisture meter. The present invention also provides a light conversion layer including a plurality of pixel units, wherein the plurality of pixel units include a pixel unit containing a cured product of the ink composition, and the light conversion layer is formed of the cured product of the ink composition. The present invention also provides a color filter including the light conversion layer.
    Type: Application
    Filed: July 19, 2018
    Publication date: July 16, 2020
    Applicant: DIC CORPORATION
    Inventors: Sunao Yoshihara, Takayuki Miki, Hirotomo Sasaki, Ikuro Kiyoto, Minoru Tabuchi
  • Publication number: 20190390076
    Abstract: A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.
    Type: Application
    Filed: December 21, 2017
    Publication date: December 26, 2019
    Applicant: DIC Corporation
    Inventors: Takeshi Isonaka, Yasuo Umezu, Hidehiko Yamaguchi, Yoshio Aoki, Hirotomo Sasaki, Sunao Yoshihara, Takayuki Miki, Aya Ishizuka, Takeo Kizaki
  • Patent number: 9034419
    Abstract: A silver salt-containing layer containing a silver salt and provided on a support is exposed and developed to form a metal silver portion and a light-transmitting portion, and then the metal silver portion is further subjected to physical development and/or plating to form a conductive metal portion consisting of the metal silver portion carrying conductive metal particles. A method for producing a light-transmitting electromagnetic wave-shielding film which enables production of an electromagnetic wave-shielding material simultaneously having high EMI-shielding property and high transparency in a fine line pattern and also enables mass production of such films at a low cost, and a light-transmitting electromagnetic wave-shielding film obtained by the production method and free from the problem of moire are provided.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: May 19, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Ryou Nishizakura, Kiyoshi Morimoto, Shunji Takada
  • Publication number: 20140234760
    Abstract: A producing method for a translucent electromagnetic shield film comprising exposing a photosensitive material having an emulsion layer containing a silver salt and a dye on a substrate, then executing a development process to form a metallic silver portion and a light transmitting portion respectively in an exposed area and an unexposed area, and applying a physical development and/or a plating process to the metallic silver portion thereby causing the metallic silver portion to carry a conductive metal. The producing method allows to inexpensively mass produce a translucent electromagnetic shield film without a moiré pattern, having a high EMI shield property and a high transparency at the same time.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Hirotomo SASAKI, Ryou NISHIZAKURA
  • Patent number: 8492296
    Abstract: A silver salt-containing layer containing a silver salt and provided on a support is exposed and developed to form a metal silver portion and a light-transmitting portion, and then the metal silver portion is further subjected to physical development and/or plating to form a conductive metal portion consisting of the metal silver portion carrying conductive metal particles. A method for producing a light-transmitting electromagnetic wave-shielding film which enables production of an electromagnetic wave-shielding material simultaneously having high EMI-shielding property and high transparency in a fine line pattern and also enables mass production of such films at a low cost, and a light-transmitting electromagnetic wave-shielding film obtained by the production method and free from the problem of moire are provided.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 23, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Ryou Nishizakura, Kiyoshi Morimoto, Shunji Takada
  • Patent number: 8034542
    Abstract: An electromagnetic shielding film for plasma display which is excellent in electromagnetic shielding characteristics for effectively shielding electromagnetic waves, near infrared rays, stray light, external light, and the like and even when stored under a wet heat condition, is small in change of color tint and good in adhesion, with a blackening layer hardly peeled away, is provided by a transparent electromagnetic shielding film including a transparent support having thereon a conductive metal layer in a pattern-like state having an electromagnetic shielding ability and having a surface covered by a blackening layer, with the blackening layer made of an alloy of nickel and zinc in a nickel/zinc mass ratio of from 0.5 to 50.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: October 11, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Jun Matsumoto, Takayasu Yamazaki, Akimitsu Haijima, Yoshihiro Fujita
  • Patent number: 7934966
    Abstract: A light-transmitting electromagnetic wave shielding film which is a conductive silver thin film with a metallic silver portion formed on a support in a meshy state, wherein the metallic silver portion formed in the meshy state has a line width of 18 ?m or less, an opening rate of 85% or more, an Ag content of 80 to 100% by mass and a surface resistance value of 5 ?/sq or less. This light-transmitting electromagnetic wave shielding film has characteristic features that it has a high electromagnetic wave shielding property and a high transparency at the same time and the meshy portion is black.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: May 3, 2011
    Assignee: Fujifilm Corporation
    Inventors: Hirotomo Sasaki, Ryo Nishizakura
  • Patent number: 7796327
    Abstract: To provide a light transmitting electromagnetic wave shielding film which achieves both of excellent electromagnetic wave shielding properties and an excellent near infrared ray cutting function. A light transmitting electromagnetic wave shielding film has a metallic silver part and a light transmitting part, which are formed by exposing an emulsion layer containing a silver salt emulsion formed on a support and then developing, wherein the light transmitting electromagnetic wave shielding film has infrared ray shielding properties.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: September 14, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Hirotomo Sasaki
  • Publication number: 20100170710
    Abstract: An electromagnetic shielding film for plasma display which is excellent in electromagnetic shielding characteristics for effectively shielding electromagnetic waves, near infrared rays, stray light, external light, and the like and even when stored under a wet heat condition, is small in change of color tint and good in adhesion, with a blackening layer hardly peeled away, is provided by a transparent electromagnetic shielding film including a transparent support having thereon a conductive metal layer in a pattern-like state having an electromagnetic shielding ability and having a surface covered by a blackening layer, with the blackening layer made of an alloy of nickel and zinc in a nickel/zinc mass ratio of from 0.5 to 50.
    Type: Application
    Filed: March 28, 2007
    Publication date: July 8, 2010
    Inventors: Hirotomo Sasaki, Jun Matsumoto, Takayasu Yamazaki, Akimitsu Haijima, Yoshihiro Fujita
  • Publication number: 20090246486
    Abstract: A light-transmittable electromagnetic wave shielding film comprising: a transparent substrate; a printed pattern containing silver as a major component; and at least one rust inhibitor, a process for producing a light-transmittable electromagnetic wave shielding film, which comprises: forming a metal silver portion and a light-transmitting portion by exposing a silver salt-containing layer provided on a transparent substrate and development-processing the exposed layer; subjecting the metal silver portion to at least one of physical development and plating treatment to form an electro-conductive metal portion where an electro-conductive metal is supported on the metal silver portion; and subjecting the electro-conductive metal portion to color change-preventing treatment with an organic mercapto compound and a light-transmittable electromagnetic wave shielding film produced by the process, and a film for display panel, an optical filter for plasma display panel and a plasma display panel comprising the light-
    Type: Application
    Filed: September 22, 2006
    Publication date: October 1, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Hirotomo Sasaki
  • Patent number: 7537800
    Abstract: A silver salt-containing layer containing a silver salt and provided on a support is exposed and developed to form a metal silver portion and a light-transmitting portion, and then the metal silver portion is further subjected to physical development and/or plating to form a conductive metal portion consisting of the metal silver portion carrying conductive metal particles. A method for producing a light-transmitting electromagnetic wave-shielding film which enables production of an electromagnetic wave-shielding material simultaneously having high EMI-shielding property and high transparency in a fine line pattern and also enables mass production of such films at a low cost, and a light-transmitting electromagnetic wave-shielding film obtained by the production method and free from the problem of moire are provided.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 26, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Ryou Nishizakura, Kiyoshi Morimoto, Shunji Takada
  • Publication number: 20090110912
    Abstract: A silver salt-containing layer containing a silver salt and provided on a support is exposed and developed to form a metal silver portion and a light-transmitting portion, and then the metal silver portion is further subjected to physical development and/or plating to form a conductive metal portion consisting of the metal silver portion carrying conductive metal particles. A method for producing a light-transmitting electromagnetic wave-shielding film which enables production of an electromagnetic wave-shielding material simultaneously having high EMI-shielding property and high transparency in a fine line pattern and also enables mass production of such films at a low cost, and a light-transmitting electromagnetic wave-shielding film obtained by the production method and free from the problem of moire are provided.
    Type: Application
    Filed: December 22, 2008
    Publication date: April 30, 2009
    Applicant: FUJIFILM CORPORATION
    Inventors: Hirotomo SASAKI, Ryou Nishizakura, Kiyoshi Morimoto, Shunji Takada
  • Publication number: 20090052017
    Abstract: To provide a light transmitting electromagnetic wave shielding film which achieves both of excellent electromagnetic wave shielding properties and an excellent near infrared ray cutting function. A light transmitting electromagnetic wave shielding film has a metallic silver part and a light transmitting part, which are formed by exposing an emulsion layer containing a silver salt emulsion formed on a support and then developing, wherein the light transmitting electromagnetic wave shielding film has infrared ray shielding properties.
    Type: Application
    Filed: March 14, 2006
    Publication date: February 26, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Hirotomo Sasaki
  • Publication number: 20090011669
    Abstract: A silver salt-containing layer containing a silver salt and provided on a support is exposed and developed to form a metal silver portion and a light-transmitting portion, and then the metal silver portion is further subjected to physical development and/or plating to form a conductive metal portion consisting of the metal silver portion carrying conductive metal particles. A method for producing a light-transmitting electromagnetic wave-shielding film which enables production of an electromagnetic wave-shielding material simultaneously having high EMI-shielding property and high transparency in a fine line pattern and also enables mass production of such films at a low cost, and a light-transmitting electromagnetic wave-shielding film obtained by the production method and free from the problem of moire are provided.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 8, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Hirotomo SASAKI, Ryou Nishizakura, Kiyoshi Morimoto, Shunji Takada
  • Publication number: 20080211371
    Abstract: A light-transmitting electromagnetic wave shielding film which is a conductive silver thin film with a metallic silver portion formed on a support in a meshy state, wherein the metallic silver portion formed in the meshy state has a line width of 18 ?m or less, an opening rate of 85% or more, an Ag content of 80 to 100% by mass and a surface resistance value of 5 ?/sq or less. This light-transmitting electromagnetic wave shielding film has characteristic features that it has a high electromagnetic wave shielding property and a high transparency at the same time and the meshy portion is black.
    Type: Application
    Filed: June 22, 2005
    Publication date: September 4, 2008
    Applicant: FUJIFILM Corporation
    Inventors: Hirotomo Sasaki, Ryo Nishizakura