Patents by Inventor Keizo Ogawa

Keizo Ogawa 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: 7335393
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form CuAu type or Cu3Au type hard magnetic order alloy phase on a support, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form hard magnetic order alloy phase, oxidizing the alloy particle, and annealing the particle in non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic order alloy phase, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: February 26, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Patent number: 7244287
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu3Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form a hard magnetic ordered alloy phase, oxidizing the alloy particle, and annealing the particle in a non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic ordered alloy phase, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: July 17, 2007
    Assignee: Fujifilm Corporation
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Patent number: 7067199
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu3Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form a hard magnetic ordered alloy phase, oxidizing the alloy particle, and annealing the particle in a non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic ordered alloy phase, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: June 27, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Publication number: 20040261907
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form CuAu type or Cu3Au type hard magnetic order alloy phase on a support, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form hard magnetic order alloy phase, oxidizing the alloy particle, and annealing the particle in non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic order alloy phase, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 30, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Publication number: 20040261905
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form CuAu type or Cu3Au type hard magnetic order alloy phase on a support, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form hard magnetic order alloy phase, oxidizing the alloy particle, and annealing the particle in non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic order alloy phase, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 30, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Publication number: 20040261906
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form CuAu type or Cu3Au type hard magnetic order alloy phase on a support, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form hard magnetic order alloy phase, oxidizing the alloy particle, and annealing the particle in non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic order alloy phase, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 30, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Publication number: 20040033357
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form CuAu type or Cu3Au type hard magnetic order alloy phase on a support, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form hard magnetic order alloy phase, oxidizing the alloy particle, and annealing the particle in non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic order alloy phase, oxidizing the layer, and annealing the layer in non-oxidizing atmosphere.
    Type: Application
    Filed: May 30, 2003
    Publication date: February 19, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
  • Patent number: 6686125
    Abstract: A lithographic printing plate precursor which comprises a support having provided thereon a layer containing a light-to-heat converting agent as a lower layer and a hydrophilic photosensitive layer containing light-to-heat convertible metallic fine particles which change to hydrophobic with the conversion of light to heat as an upper layer.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: February 3, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Hoshi, Shingo Ishimaru, Keizo Ogawa, Kouichi Waki, Kiyotaka Fukino
  • Patent number: 6468575
    Abstract: A tongue rack includes a frame with a plurality of troughs supported on the frame. Each trough is generally U-shaped in cross-section and sloped, with the open upper end of the trough located above a closed lower end of the trough. A tongue placed in the trough will shorten in length and increase in thickness as it is chilled. The method of the invention includes extracting a beef tongue from an animal and positioning the tongue into the sloped trough with the base end of the tongue against the closed end of the trough and the tipped end of the tongue proximal the open end of the trough, prior to rigor mortis setting in on the tongue.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: October 22, 2002
    Assignee: Fremont Beef Company
    Inventors: Les Leech, Kohei Nomura, Keizo Ogawa, Ken Johnson, Jeff Brindley
  • Publication number: 20020106433
    Abstract: A tongue rack includes a frame with a plurality of troughs supported on the frame. Each trough is generally U-shaped in cross-section and sloped, with the open upper end of the trough located above a closed lower end of the trough. A tongue placed in the trough will shorten in length and increase in thickness as it is chilled. The method of the invention includes extracting a beef tongue from an animal and positioning the tongue into the sloped trough with the base end of the tongue against the closed end of the trough and the tipped end of the tongue proximal the open end of the trough, prior to rigor mortis setting in on the tongue.
    Type: Application
    Filed: February 5, 2001
    Publication date: August 8, 2002
    Inventors: Les Leech, Kohei Nomura, Keizo Ogawa, Ken Johnson, Jeff Brindley
  • Publication number: 20020006580
    Abstract: An optical recording medium comprises a recording layer containing, as a photoresponsive material, metal chalcogenide nanoparticles, wherein the metal chalcogenide nanoparticles have an average particle size of 1 to 20 nm and have a surface modified with an adsorbable compound.
    Type: Application
    Filed: June 6, 2001
    Publication date: January 17, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Shingo Ishimaru, Yoshio Tadakuma, Keizo Ogawa, Koukichi Waki, Yoshihisa Usami
  • Publication number: 20010036592
    Abstract: A lithographic printing plate precursor which comprises a support having provided thereon a layer containing a light-to-heat converting agent as a lower layer and a hydrophilic photosensitive layer containing light-to-heat convertible metallic fine particles which change to hydrophobic with the conversion of light to heat as an upper layer.
    Type: Application
    Filed: January 10, 2001
    Publication date: November 1, 2001
    Inventors: Satoshi Hoshi, Shingo Ishimaru, Keizo Ogawa, Koukichi Waki, Kiyotaka Fukino
  • Patent number: 6042467
    Abstract: A tongue squeezer includes a cylindrical roller operably mounted on one end of a pivot arm to pivot the roller between a "working" position spaced vertically above a second roller, and an "open" position spaced upwardly away from the second roller. A weight is attached to the pivot arm to bias the first roller downwardly towards the second roller to thereby squeeze a meat product directed between the first and second rollers. A second pair of rollers is operably mounted downstream of the first pair of rollers, with a third roller mounted below a fourth roller. The fourth roller is mounted on a second pivot arm with a weight attached thereto, to apply a biasing force to squeeze the meat product as it is directed between the second pair of rollers, from the first pair of rollers.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: March 28, 2000
    Assignee: Fremont Beef Co.
    Inventors: Leslie D. Leech, Keizo Ogawa, Ken Johnson
  • Patent number: 5728879
    Abstract: A bisguanidine salt selected from the group consisting of a 4-(phenylsulfonyl)phenylsulfonylacetic acid salt of N,N'-bis(1,3-diethylguanyl)ethylenediamine, a 4-(phenylsulfonyl)phenylsulfonylacetic acid salt of N,N'-bis(1,3-diisopropylguanyl)ethylenediamine, a 4-(phenylsulfonyl)phenylsulfonylacetic acid salt of N,N'-bis-(imidazoline-2-yl)ethylenediamine, a 4-(phenylsulfonyl)-phenylsulfonylacetic acid salt of 1,4-bis(1,3-diisopropylguanyl)piperazine, a 4-(phenylsulfonyl)phenylsulfonylacetic acid salt of 1,4-bis(1,3-diethylguanyl)piperazine, a 4-(4-methylphenylsulfonyl)phenylsulfonylacetic acid salt of N,N'-bis(1,3-diethylguanyl)ethylenediamine and a 4-(4-ethylphenylsulfonyl)phenylsulfonylacetic acid salt of 1,4-bis(1,3-diethylguanyl)piperazine which can be used as a base precursor which is rapidly decomposed by heat treatment at 120.degree. C. or less to release a base.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: March 17, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jiro Tsukahara, Kiyoshi Takeuchi, Hideaki Satoh, Shun-ichi Ishikawa, Keizo Ogawa, Tomomi Ishino