Patents by Inventor Keiji Ishii

Keiji Ishii 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: 5652478
    Abstract: A display anode connected to a display anode bus bar and a display cathode connected to a cathode bus bar cooperatively constitute a display cell. An auxiliary anode connected to an auxiliary anode bus bar and an auxiliary cathode connected to an auxiliary cathode bus bar cooperatively constitute an auxiliary cell. Each of the display anode is connected in series with a display anode resistance. Each of the auxiliary anode is connected in series with an auxiliary anode resistance.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: July 29, 1997
    Assignees: Matsushita Electronics Corporation, Nippon Hoso Kyokai
    Inventors: Tetsuo Sakai, Keiji Ishii, Mizumoto Ushirozawa, Yoshimichi Takano, Yukio Murakami, Yasushi Motoyama, Kazuo Takahashi
  • Patent number: 5639579
    Abstract: A photosensitive colored resin composition for the formation of colored images includes (a) a resin-based material hardenable with an acid, (b) a photoreactive acid-releasing agent, and (c) a pigment.A colored image formation method of a color filter suitable for liquid crystal display panel applications includes the steps of:(1) coating a photosensitive colored resin composition including (a) a resin-based material hardenable with an acid, (b) a photoreactive acid-releasing agent, and (c) a pigment on a transparent substrate, and drying the coating to form a colored resin layer;(2) pattern exposing the colored resin layer;(3) heating the exposed colored resin layer; and(4) developing the exposed and heated colored resin layer with an alkaline developing solution to form a colored image on the transparent substrate,the steps being repeated to form a multi-colored image on the same substrate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 17, 1997
    Assignee: Toyo Gosei Kogyo Co., Ltd.
    Inventors: Keiichi Hayashi, Nobuyuki Kurata, Keiji Ishii, Hideo Kikuchi
  • Patent number: 5492818
    Abstract: The present invention provides a method of producing L-glutamic acid by fermentation, comprising the steps ofculturing a mutant of an L-glutamic acid-producing microorganism of the genus Brevibacterium or Corynebacterium which has lower .alpha.-ketoglutaric acid dehydrogenase activity compared with the wild strains from which said mutant is derived, in a liquid nutrient culture medium containing biotin at a concentration of 10 to 1000 .mu.g/l without adding a biotin activity-suppressing substance thereto;producing and accumulating L-glutamic acid in the culture solution; andrecovering L-glutamic acid from said culture solution.According to the method of the present invention, it is possible to industrially produce L-glutamic acid by fermentation in a more economical and efficient manner.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: February 20, 1996
    Assignee: Ajinomoto Co., Inc.
    Inventors: Hidetsugu Nakazawa, Hiroki Kawashima, Inao Oyama, Keiji Ishii, Yoshio Kawahara
  • Patent number: 5431114
    Abstract: A combustion apparatus including a mixture feeding pipe for injecting a mixture of pulverized coal for combustion air into a furnace, with the mixture being then ignited. A first gas feeding passage is disposed outwardly of the mixture feeding pipe for feeding oxygen-containing gas into the furnace, with a second gas feeding passage being disposed between the gas feeding passage and the mixture feeding pipe, in a radial direction, for feeding the oxygen-containing gas into the furnace. A projection is disposed between the gas feeding passage and the mixture feeding pipe and extends at an exposed end surface thereof into the furnace beyond an exposed end of the mixture feeding pipe, with the projection being hollow for allowing the oxygen-containing gas to flow within the projection.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: July 11, 1995
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Shigeki Morita, Kouji Kuramashi, Shigeto Nakashita, Keiji Ishii, Tadashi Jimbo, Kunio Hodozuka, Akira Baba, Hironobu Kobayashi
  • Patent number: 5263426
    Abstract: A combustion apparatus including a mixture feeding pipe for injecting a mixture of pulverized coal and combustion air into a furnace, with the mixture then being ignited. A radially outwardly flared flame maintaining ring is provided at a tip end of the mixture feeding pipe, with the maintaining ring being exposed to a reduced atmosphere and to high temperatures due to radiant heat from the furnace. A projection extends into the furnace beyond the flame maintaining ring so as to protect the flame maintaining ring from radiation from inside the furnace thereby suppressing an excessive increase in temperature. Combustion air flows along a surface of the projection so as to provide at oxidized atmosphere.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: November 23, 1993
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Shigeki Morita, Kouji Kuramashi, Shigeto Nakashita, Keiji Ishii, Tadashi Jimbo, Kunio Hodozuka, Akira Baba, Hironobu Kobayashi