Patents by Inventor Seiji Akiyama

Seiji Akiyama 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: 20200173044
    Abstract: A method for producing a transparent electrode for oxygen production having a Ta nitride layer on a transparent substrate, including: a step of forming a Ta nitride precursor layer on the transparent substrate; and a step of nitriding the Ta nitride precursor layer with a mixed gas containing ammonia and a carrier gas.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 4, 2020
    Applicants: Mitsubishi Chemical Corporation, THE UNIVERSITY OF TOKYO, JAPAN TECHNOLOGICAL RESEARCH ASSOCIATION OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroshi NISHIYAMA, Tomohiro HIGASHI, Yutaka SASAKI, Taro YAMADA, Kazunari DOMEN, Yohichi SUZUKI, Seiji AKIYAMA
  • Publication number: 20190259543
    Abstract: The present invention provides a method of producing a composite photocatalyst having a remarkable water splitting activity, which is capable of efficiently loading a co-catalyst having a small particle size in a highly dispersed manner on a surface of an optical semiconductor. According to the present invention, the method of producing a composite photocatalyst from a plurality types of optical semiconductors includes a step of heating a solid-liquid mixture containing a solvent, a co-catalyst or a co-catalyst source, and a plurality of types of optical semiconductors by irradiating the solid-liquid mixture with microwave.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Applicants: MITSUBISHI CHEMICAL CORPORATION, The University of Tokyo, Japan Technological Research Association of Artificial Photosynthetic Chemical Process
    Inventors: Seiji AKIYAMA, Kazunari DOMEN
  • Patent number: 10332690
    Abstract: The present invention provides a method of producing a composite photocatalyst having a remarkable water splitting activity, which is capable of efficiently loading a co-catalyst having a small particle size in a highly dispersed manner on a surface of an optical semiconductor. According to the present invention, the method of producing a composite photocatalyst from a plurality types of optical semiconductors includes a step of heating a solid-liquid mixture containing a solvent, a co-catalyst or a co-catalyst source, and a plurality of types of optical semiconductors by irradiating the solid-liquid mixture with microwave.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: June 25, 2019
    Assignees: MITSUBISHI CHEMICAL CORPORATION, The University of Tokyo, Japan Technological Research Association of Artificial Photosynthetic Chemical Process
    Inventors: Seiji Akiyama, Kazunari Domen
  • Publication number: 20190144723
    Abstract: The present invention is to provide an adhesive sheet that can be easily peeled without causing deformation or the like of the adherend when the load applied per unit area of the adhesive sheet at the time of affixation is set to a light load of about 5 N/cm2 or less, and that can exhibit very excellent adhesive strength when the load is set to about 10 N/cm2 or more. The present invention relates to an adhesive sheet comprising an adhesive layer (A) that has a storage modulus at 23° C. in the range of 1×104 Pa to 5×106 Pa and has a surface with a center line average surface roughness Ra in the range of 0.2 ?m to 5.0 ?m to be in contact with an adherend.
    Type: Application
    Filed: March 21, 2017
    Publication date: May 16, 2019
    Applicants: DIC Corporation, DIC Corporation
    Inventors: Seiji Akiyama, Akinori Morino
  • Publication number: 20170250031
    Abstract: The present invention provides a method of producing a composite photocatalyst having a remarkable water splitting activity, which is capable of efficiently loading a co-catalyst having a small particle size in a highly dispersed manner on a surface of an optical semiconductor. According to the present invention, the method of producing a composite photocatalyst from a plurality types of optical semiconductors includes a step of heating a solid-liquid mixture containing a solvent, a co-catalyst or a co-catalyst source, and a plurality of types of optical semiconductors by irradiating the solid-liquid mixture with microwave.
    Type: Application
    Filed: March 31, 2017
    Publication date: August 31, 2017
    Applicants: MITSUBISHI CHEMICAL CORPORATION, The University of Tokyo, Japan Technological Research Association of Artificial Photosynthetic Chemical Process
    Inventors: Seiji AKIYAMA, Kazunari Domen
  • Publication number: 20170158916
    Abstract: An object of the present invention is to provide an adhesive tape that has very good adhesion in a temperature range of not greater than 60° C. and that rapidly decreases its adhesion after heating for a short period of time. The invention relates to an adhesive tape including a rubber-based adhesive layer. The storage modulus G120 of the adhesive component present in the adhesive layer at 120° C. is 1.0×103 to 2.0×105 Pa. The ratio (G23/G120) of the storage modulus G23 of the adhesive component at 23° C. to the storage modulus G120 is 1 to 20.
    Type: Application
    Filed: June 25, 2015
    Publication date: June 8, 2017
    Applicant: DIC CORPORATION
    Inventors: Seiji Akiyama, Akinori Morino
  • Publication number: 20130333758
    Abstract: An object of the present invention is to provide a photoelectric conversion element, a solar cell and a solar cell module with improved photoelectric conversion efficiency. The object is achieved with a photoelectric conversion element comprising a pair of electrodes, an active layer disposed between the electrodes and an electron extraction layer disposed between at least one of the electrodes and the active layer, wherein the active layer contains a copolymer having a repeating unit represented by General Formula (1) below, and the electron extraction layer contains a compound represented by General Formula (E1) below.
    Type: Application
    Filed: July 29, 2013
    Publication date: December 19, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Misako OKABE, Jun ENDA, Seiji AKIYAMA, Hitoshi OOTA, Rieko FUJITA, Saika OOTSUBO
  • Publication number: 20120211082
    Abstract: There is provides a photoelectric conversion device material which can be used as an electrode buffer material for a solar cell or the like and can improve durability while maintaining the interaction with an electrode and mobility; a photoelectric conversion device using the photoelectric conversion device material; and a solar cell using the photoelectric conversion device. A photoelectric conversion device containing a buffer layer and an active layer, wherein the buffer layer contains a compound represented by the following general formula (I), the active layer contains an n-type semiconductor, and the n-type semiconductor is a compound having a solubility in toluene of 0.5% by weight or more at 25° C. and having an electron mobility of 1.0×10?6 cm2/Vs or more.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 23, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Seiji AKIYAMA, Hitoshi Oota, Misako Okabe, Saika Ootsubo, Junya Kawai, Yoshiko Moritake, Takaaki Niinomi, Yuhei Ogomi, Takamichi Yokoyama
  • Publication number: 20110049444
    Abstract: A colored resin composition is provided which is capable of providing blue pixels of a color filter that have excellent light resistance and which satisfies heat resistance required in color display production steps. A color filter having blue pixels with excellent color purity and transmittance and an organic EL display and a liquid-crystal display device both having satisfactory blue purity are also provided by using the colored resin composition. The colored resin composition for color filter includes (a) a binder resin, (b) a solvent, and a triarylmethane type coloring matter of a specific structure represented by general formula (I). The color filter, organic EL display, and liquid-crystal display device are produced using the colored resin composition.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 3, 2011
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Naoki SAKO, Seiji AKIYAMA, Takayuki SHODA, Sae MORIGAKI, Yasushi SHIGA, Toshiaki YOKOO, Mio ISHIDA
  • Publication number: 20090179196
    Abstract: The object is to provide a light-emitting transistor material which is high in both luminescent property and mobility when used as a light-emitting transistor device. A light-emitting transistor device is provided in which light emission of a specific pyrene-based organic compound is used for a light-emitting layer of a transistor device.
    Type: Application
    Filed: March 20, 2007
    Publication date: July 16, 2009
    Inventors: Chihaya Adachi, Takahito Oyamada, Hiroyuki Uchiuzou, Seiji Akiyama, Takayoshi Takahashi, Kumiko Takenouchi, Masaki Shimizu, Tamejiro Hiyama, Etsuya Okamoto
  • Publication number: 20080105865
    Abstract: An object is to provide a pyrene based compound that is good in both properties of light emission and mobility when the compound is used as a light emitting transistor element; and a light emitting transistor element wherein this specific pyrene based compound is used. A pyrene based compound represented by the following chemical formula (1) is used as a main component of a light emitting layer in a light emitting transistor element: (wherein R1 represents a group selected from a heteroaryl group which may have a substituent, an aryl group which may have a substituent except a phenyl group which does not have any substituent, an alkyl group which may have a substituent and has a main chain having 1 to 20 carbon atoms, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, a silyl group which may have a substituent, and a halogen atom.
    Type: Application
    Filed: November 25, 2005
    Publication date: May 8, 2008
    Inventors: Takahito Oyamada, Hiroyuki Uchiuzou, Chihaya Adachi, Seiji Akiyama, Takayoshi Takahashi
  • Publication number: 20080012475
    Abstract: It is an object to provide an organic fluorescent substance which can be used in a light emitting transistor element and an organic EL element. The invention provides a light emitting transistor element or an organic electroluminescence element wherein a specific asymmetric pyrene based compound is used in a light emitting layer in the light emitting transistor element, or in a light emitting layer, a hole transporting layer or an electron transporting layer in the organic EL element.
    Type: Application
    Filed: November 25, 2005
    Publication date: January 17, 2008
    Inventors: Takahito Oyamada, Hiroyuki Uchiuzou, Chihaya Adachi, Seiji Akiyama, Takayoshi Takahashi
  • Patent number: 6803944
    Abstract: The invader detector has a fixing portion attached and fixed within a vehicle, a sensor containing portion for enclosing an ultrasonic sensor for detecting an invader into the vehicle, and an angular displacement shaft for angularly displacing the sensor containing portion. The sensor containing portion can be driven to a detection position for detecting the invader into the vehicle or a storage position.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: October 12, 2004
    Assignee: Fujitsu Ten Limited
    Inventors: Kouji Oku, Shinji Yakura, Seiji Akiyama
  • Publication number: 20030174052
    Abstract: The invader detector has a fixing portion attached and fixed within a vehicle, a sensor containing portion for enclosing an ultrasonic sensor for detecting an invader into the vehicle, and an angular displacement shaft for angularly displacing the sensor containing portion. The sensor containing portion can be driven to a detection position for detecting the invader into the vehicle or a storage position.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Applicant: FUJITSU TEN LIMITED
    Inventors: Kouji Oku, Shinji Yakura, Seiji Akiyama
  • Patent number: 4857469
    Abstract: A process for preparing an optically active mercapto compound having asymmetrical centers having the formula: ##STR1## in which R.sub.1 represents an alkyl group, R represents a hydrogen atom or an alkyl group, C* represents an asymmetric carbon, n represents the value of 1 or 2, is disclosed. The process involves the reaction of a cultured microorganism having the ability of asymmetrically hydrolyzing ester bonds of the raw material, thus eliminating the need for protecting free mercapto groups which are unstable in the reaction conditions. The optically active mercapto compound is useful as a raw material for producing a compound having medicinal effects such as antihypertensive activity.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: August 15, 1989
    Assignee: Toyo Jozo Co., Ltd.
    Inventors: Fumihiro Ishimura, Satoru Ishikawa, Seiji Akiyama
  • Patent number: 4335981
    Abstract: A cargo handling equipment comprises a stationary column installed offshore of a river or a creek, a stationary bridge bridging the shore of said river or creek and said stationary column and provided with a cargo transportation apparatus, a movable bridge swingably connected to the stationary column and provided with another cargo transportation apparatus, and a floating body detachably secured to the free end of the movable bridge and provided with legs which are vertically movable and can reach the bottom of the river or the creek.
    Type: Grant
    Filed: September 5, 1979
    Date of Patent: June 22, 1982
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Seiji Akiyama, Mamoru Kurihara, Kazuhiko Ueki
  • Patent number: 4329104
    Abstract: An improved cargo handling apparatus is described herein, which includes a crane truck, adapted to travel along a wharf sloped surface and to be fixedly positioned in the proximity of a mooring position of a ship for the loading or unloading of cargoes, and a cargo transportation truck or trucks adapted to travel along a path parallel and adjacent to the path of the crane truck between a crane positioned on the shore side of the wharf and the fixed positioned location of the crane truck.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: May 11, 1982
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Seiji Akiyama, Mamoru Kurihara, Kazuhiko Ueki
  • Patent number: H1343
    Abstract: There is disclosed a novel direct positive silver halide emulsion and a color diffusion transfer photographic film unit in which the above emulsion is used and which provides a high sensitivity and a low minimum density. The direct positive silver halide emulsion contains a core/shell type grain in which 60% or more of the projected area of all grains is shared by a monodispersed parallel twin crystal-containing type tabular grain having an aspect ratio of 1.5 or more, wherein the shell of the core/sell grain is formed by adding a silver salt in which at least 30 mole % of the silver salt is a non-twin crystal silver halide fine grain emulsion having an average grain size of 0.12 .mu.m or less.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: August 2, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuo Saitou, Katsumi Hirano, Ashita Murai, Seiji Akiyama