Patents by Inventor Tatsuro Ishikawa

Tatsuro Ishikawa 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).

  • Publication number: 20220411727
    Abstract: A cleaning composition which is used for cleaning a coating film forming device, the composition including an acid component having a pKa of 12 or less.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 29, 2022
    Inventors: Tatsuya FUJII, Tatsuro ISHIKAWA
  • Patent number: 10416560
    Abstract: A coloring agent dispersion which contains a satisfactorily dispersed pigment, and results in a photosensitive resin composition capable of forming a cured film when mixed in the photosensitive resin composition; a photosensitive resin composition containing the coloring agent dispersion; a cured product of the composition; an organic EL element provided with the cured product; a method for forming a pattern using the composition; and a method for producing a photosensitive resin composition using the dispersion. In a coloring agent dispersion including a coloring agent which contains a pigment and a dispersant, a dispersant containing a silsesquioxane compound of a specific structure is used.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 17, 2019
    Assignee: TOKYO OHKA KOGYO CO, LTD.
    Inventors: Naozumi Matsumoto, Yasuhide Ohuchi, Tatsuro Ishikawa, Mayumi Kuroko, Dai Shiota
  • Patent number: 10374337
    Abstract: A terminal block includes a housing that has an opening through which a wire is to be inserted, a terminal configured to be connected to the wire that is inserted through the opening, and a plate spring member configured to fix the wire by pressing the wire against the terminal. The plate spring member has a pressing portion configured to press the wire against the terminal, and a plastic deformation preventing portion configured to prevent the pressing portion from bending in a direction away from the terminal by more than a predetermined amount.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 6, 2019
    Assignee: OMRON Corporation
    Inventors: Shinya Tsuji, Yoshikazu Tajiri, Tatsuro Ishikawa, Kiyokazu Matsunaga
  • Patent number: 10336708
    Abstract: A novel imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. A metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: July 2, 2019
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Tatsuro Ishikawa, Kunihiro Noda, Yasuhide Ohuchi, Hiroki Chisaka, Dai Shiota, Yukitsugu Maeda, Takafumi Imoto, Kouhei Fujita, Yasuyuki Akai
  • Publication number: 20190094692
    Abstract: A photosensitive resin composition which gives a cured film having high light shielding properties and enables stable curing by baking at low temperature, a cured film obtained by curing the composition, a display device provided with the cured film, and a pattern forming method using the composition. A light shielding film-forming process which does not impart thermal damage to a light-emitting element with respect to a substrate provided with a light-emitting element. In a photosensitive resin composition including a binder resin, a photopolymerizable compound, a photopolymerization initiator, a coloring agent, and a thermosetting compound, a carbon black and/or an inorganic black pigment, and an organic pigment are used in combination as the coloring agent, and a photosensitive resin composition in which T2/T1 is 0.80 or more is used.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Inventors: Tatsuro ISHIKAWA, Naozumi MATSUMOTO, Dai SHIOTA
  • Publication number: 20180183158
    Abstract: A terminal block includes a housing that has an opening through which a wire is to be inserted, a terminal configured to be connected to the wire that is inserted through the opening, and a plate spring member configured to fix the wire by pressing the wire against the terminal. The plate spring member has a pressing portion configured to press the wire against the terminal, and a plastic deformation preventing portion configured to prevent the pressing portion from bending in a direction away from the terminal by more than a predetermined amount.
    Type: Application
    Filed: October 18, 2017
    Publication date: June 28, 2018
    Applicant: OMRON Corporation
    Inventors: Shinya TSUJI, Yoshikazu TAJIRI, Tatsuro ISHIKAWA, Kiyokazu MATSUNAGA
  • Publication number: 20180113383
    Abstract: A coloring agent dispersion which contains a satisfactorily dispersed pigment, and results in a photosensitive resin composition capable of forming a cured film when mixed in the photosensitive resin composition; a photosensitive resin composition containing the coloring agent dispersion; a cured product of the composition; an organic EL element provided with the cured product; a method for forming a pattern using the composition; and a method for producing a photosensitive resin composition using the dispersion. In a coloring agent dispersion including a coloring agent which contains a pigment and a dispersant, a dispersant containing a silsesquioxane compound of a specific structure is used.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 26, 2018
    Inventors: Naozumi MATSUMOTO, Yasuhide OHUCHI, Tatsuro ISHIKAWA, Mayumi KUROKO, Dai SHIOTA
  • Publication number: 20170247334
    Abstract: A novel imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. A metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.
    Type: Application
    Filed: August 27, 2015
    Publication date: August 31, 2017
    Inventors: Tatsuro ISHIKAWA, Kunihiro NODA, Yasuhide OHUCHI, Hiroki CHISAKA, Dai SHIOTA, Yukitsugu MAEDA, Takafumi IMOTO, Kouhei FUJITA, Yasuyuki AKAI
  • Publication number: 20150050528
    Abstract: A fuel cell system includes a control valve configured to control a pressure of the anode gas supplied to the fuel cell, the power controller electrically connected to the fuel cell and configured to control an output of the fuel cell based on a power generation required amount for the fuel cell, a pulsation operation control unit configured to increase a pressure of the anode gas downstream of the control valve in accordance with the power generation required amount for the fuel cell and to increase and decrease the pressure of the anode gas periodically, and an output limiting unit configured to limit an output of the fuel cell set by the power controller when the power generation required amount for the fuel cell decreases.
    Type: Application
    Filed: March 12, 2013
    Publication date: February 19, 2015
    Inventors: Takahiro Fujii, Tatsuro Ishikawa, Yasushi Ichikawa, Keigo Ikezoe
  • Publication number: 20150037700
    Abstract: A fuel cell system includes a pressure regulating valve configured to control a pressure of an anode gas to be supplied to a fuel cell, a pulsation operation control means configured to control such that the anode gas pressure becomes higher as a load becomes larger, and the anode gas pressure is pulsated at the same load, and an anode gas pressure limiting means configured to limit the anode gas pressure by a pressure higher than the anode gas pressure according to the load when the load lowers.
    Type: Application
    Filed: February 28, 2013
    Publication date: February 5, 2015
    Inventors: Yasushi Ichikawa, Takahiro Fujii, Keigo Ikezoe, Atsushi Fukunaka, Tatsuro Ishikawa
  • Patent number: 8889323
    Abstract: A photosensitive resin composition having excellent storage stability which can form a high precision pattern upon a low amount of exposure; a method of forming a pattern including a polysiloxane coating with the photosensitive resin composition; and an electronic component including a pattern including a polysiloxane coating formed with the photosensitive resin composition. A compound which generates an imidazole compound having a predetermined structure by light is added to a photosensitive resin composition including one or more hydrolyzable silane compounds, hydrolysates of the hydrolyzable silane compounds and condensates thereof and a photo-base generator or a photo-acid generator.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: November 18, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Dai Shiota, Mayumi Kuroko, Tatsuro Ishikawa
  • Publication number: 20140178808
    Abstract: A photosensitive resin composition having excellent storage stability which can form a high precision pattern upon a low amount of exposure; a method of forming a pattern including a polysiloxane coating with the photosensitive resin composition; and an electronic component including a pattern including a polysiloxane coating formed with the photosensitive resin composition. A compound which generates an imidazole compound having a predetermined structure by light is added to a photosensitive resin composition including one or more hydrolyzable silane compounds, hydrolysates of the hydrolyzable silane compounds and condensates thereof and a photo-base generator or a photo-acid generator.
    Type: Application
    Filed: December 26, 2013
    Publication date: June 26, 2014
    Applicant: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Dai Shiota, Mayumi Kuroko, Tatsuro Ishikawa
  • Patent number: 6750744
    Abstract: An electromagnetic relay is provided with an iron core (50) which has a virtually J-letter shape on a plan view with one end serving as a support-receiving portion (51) and the other end serving as a magnetic pole portion (52), and a movable iron member (60) which is supported by a movable contact member (70) attached to a corner thereof, and has a virtually L-letter shape on a plan view with one end (61) being supported on the support-receiving portion (51) of the iron core (50) so as to freely pivot thereon and an adsorb portion (62) that is the other end being allowed to face the magnetic pole portion (52) of the iron core (50) so as to be adsorbed thereon. The objective of the present invention is to provide an inexpensive electromagnetic relay which is less susceptible to deviations in the adsorb portion of the movable iron member that comes into contact with and separates from the magnetic pole portion of the iron core, and has stable operation characteristics.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: June 15, 2004
    Assignee: Omron Corporation
    Inventors: Syuichi Misumi, Yuichi Kariya, Hiroyuki Miyano, Shigekazu Aoki, Kenji Nakamura, Tatsuro Ishikawa, Takehiko Nakagawa
  • Publication number: 20030052759
    Abstract: An electromagnetic relay is provided with an iron core (50) which has a virtually J-letter shape on a plan view with one end serving as a support-receiving portion (51) and the other end serving as a magnetic pole portion (52), and a movable iron member (60) which is supported by a movable contact member (70) attached to a corner thereof, and has a virtually L-letter shape on a plan view with one end (61) being supported on the support-receiving portion (51) of the iron core (50) so as to freely pivot thereon and an adsorb portion (62) that is the other end being allowed to face the magnetic pole portion (52) of the iron core (50) so as to be adsorbed thereon. The objective of the present invention is to provide an inexpensive electromagnetic relay which is less susceptible to deviations in the adsorb portion of the movable iron member that comes into contact with and separates from the magnetic pole portion of the iron core, and has stable operation characteristics.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 20, 2003
    Applicant: OMRON Corporation
    Inventors: Syuichi Misumi, Yuichi Kariya, Hiroyuki Miyano, Shigekazu Aoki, Kenji Nakamura, Tatsuro Ishikawa, Takehiro Nakagawa
  • Patent number: 5759668
    Abstract: The invention provides an improved heat seal structure for electronic devices. A heat seal structure comprises a base of synthetic resin formed integrally with an outwardly extending projection, with a gas vent running through the base and projection, the gas vent being sealed off by melting the projection, the improvement that the gas vent is configured generally in the shape of the letter V or Y bifurcating in the outward direction. In another embodiment, the projection has an annular extension disposed on the outward side of the base and adapted to be melted for a double seal effect. In another version of the structure, heat-sealing is performed with a sealing member or composition interposed in the gas vent. In still further embodiments, heat sealing is performed using a sealing member melting at a temperature below the melting point of the resin forming the base.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: June 2, 1998
    Assignee: Omron Corporation
    Inventors: Tatsuro Ishikawa, Hiroyuki Sagawa, Kiyoji Inoue, Tetsuo Shinkai, Atsushi Kamizasa
  • Patent number: 4981269
    Abstract: There is disclosed a vertical mill comprising a rotatable table and rotatable grinding rollers disposed on the upper surface of the table near the outer periphery of the table. Raw material is supplied to the central portion of the table. A given grinding pressure is applied to each grinding roller to crush the raw material between the upper surface of the table and the outer surface of each grinding roller. Rotatable auxiliary rollers are arranged alternately with the grinding rollers on the upper surface of the table near the outer periphery of the table. The layer of the material caught by the grinding rollers are compacted by the outer surfaces of the auxiliary rollers. There is also disclosed a method of operating the vertical mill. The method consists in separating controlling the grinding pressures applied to the grinding rollers according to the loads on the grinding rollers.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 1, 1991
    Assignee: UBE Industries, Ltd.
    Inventors: Tadayuki Koga, Tatsuro Ishikawa, Keiichiro Miyazaki, Shinsuke Tanaka