Patents by Inventor Keiichi Okajima

Keiichi Okajima 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: 20140257581
    Abstract: Disclosed is a computation device for optimizing photovoltaic power generation by computing a wire connection pattern of a plurality of photovoltaic modules, the computation device including a parameter acquisition unit configured to acquire a parameter including at least a current value from each of the photovoltaic modules; a class classification unit configured to perform class classification of the photovoltaic modules based on the parameter acquired by the parameter acquisition unit; and a wire connection pattern selection unit configured to select the wire connection pattern based on the class classification performed by the class classification unit.
    Type: Application
    Filed: August 30, 2012
    Publication date: September 11, 2014
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takafumi Ishii, Takashi Oozeki, Takao Yamada, Hideaki Obane, Keiichi Okajima
  • Publication number: 20070160935
    Abstract: The present invention relates to a lithographic printing plate material for CTP, which comprises a substrate, a photosensitive layer formed on the substrate, and a dye-containing layer formed on the photosensitive layer, wherein the photosensitive layer is formed by a photosensitive composition comprising a halomethyl group-containing compound and an organoboron anion-containing compound, and wherein the dye-containing layer is formed by a composition for dye-containing layer, which comprises a near-infrared-absorbing dye. Accordingly, the present invention can provide a lithographic printing plate material for CTP comprising a substrate, a photosensitive layer and a dye-containing layer formed on the photosensitive layer, a producing method therefor, as well as a method for producing a printing plate from the printing plate material and a printing prate produced thereby.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 12, 2007
    Inventor: Keiichi Okajima
  • Patent number: 6767678
    Abstract: A photosolder resist composition of the invention is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least isobornyl (meth) acrylate and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; and (C) a photocurable mixture of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2), and a photopolymerization initiator (c3).
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: July 27, 2004
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Naoya Yabuuchi, Minoru Fujita, Osamu Namba, Keiichi Okajima
  • Publication number: 20040076744
    Abstract: The method of the present invention is a method for forming a solder-resist film on a circuit board having patterned circuit conductor parts at least on one face and involves steps of forming a resin layer between neighboring circuit conductor parts by applying a liquid-phase curable resin so as to fill grooves between the neighboring circuit conductor parts and forming a solder-resist film by applying a solder resist to the circuit board having the resin layer.
    Type: Application
    Filed: July 31, 2003
    Publication date: April 22, 2004
    Inventors: Keiichi Okajima, Hiroshi Oda, Takahiro Nakano
  • Publication number: 20040063849
    Abstract: A photosolder resist composition is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least a vinyl aromatic compound and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; (C) a photocurable mixture composed of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2) and a photopolymerization initiator (c3).
    Type: Application
    Filed: September 26, 2002
    Publication date: April 1, 2004
    Applicant: Nippon Paint Co., Ltd.
    Inventors: Naoya Yabuuchi, Minoru Fujita, Osamu Namba, Keiichi Okajima
  • Publication number: 20020090573
    Abstract: A photosolder resist composition of the invention is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least isobornyl (meth) acrylate and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; and (C) a photocurable mixture of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2), and a photopolymerization initiator (c3).
    Type: Application
    Filed: November 16, 2001
    Publication date: July 11, 2002
    Inventors: Naoya Yabuuchi, Minoru Fujita, Osamu Namba, Keiichi Okajima
  • Patent number: 6361924
    Abstract: Disclosed are aqueous photosolder resist compositions containing (A) an aqueous solution prepared by neutralizing a resin containing a free-radically polymerizable group and a carboxyl group with a base; (B) an inorganic filler; (C) a photocurable mixture of (c-1) a multifunctional acrylic monomer, (c-2) a compound having a cyclic ether group other than a glycidyl group and (c-3) a photoinitiator; and optionally (D) an aqueous solution prepared by neutralizing a frege-radically polymerized substance having an acid value of 130-230 mgKOH/mg. The cyclic ether group other than a glycidyl group is an alicyclic epoxy or oxetane group, for example.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: March 26, 2002
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Naoya Yabuuchi, Minoru Fujita, Osamu Namba, Keiichi Okajima
  • Patent number: 5828923
    Abstract: An apparatus and a method for processing water wash photopolymer solution includes a washout unit for washing a flexographic printing plate with water, a holding tank for holding an effluent from the washout unit, and a mixing cone for mixing an amount of the effluent supplied from the holding tank with a coagulant so as to coagulate a solid content of the effluent with the coagulant.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: October 27, 1998
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Gregory K. Harabin, Tadashi Hayashi, Kimiaki Hirayama, Keiichi Okajima
  • Patent number: 5696293
    Abstract: The present invention provides a catalyst composition for producing a polyether polyamine, comprising:(a) ruthenium and(b) at least one of metals selected from the group consisting of palladium, platinum, rhodium, osmium, iridium, rhenium, technetium, molybdenum and tungsten on a carrier.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: December 9, 1997
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Christopher Harold Phillips, Yoji Hirasawa, Keiichi Okajima, Julius John Batty, Brian Lewis Booth