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).
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Patent number: 7335393Abstract: 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: GrantFiled: July 22, 2004Date of Patent: February 26, 2008Assignee: FUJIFILM CorporationInventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Patent number: 7244287Abstract: 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: GrantFiled: July 22, 2004Date of Patent: July 17, 2007Assignee: Fujifilm CorporationInventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Patent number: 7067199Abstract: 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: GrantFiled: July 22, 2004Date of Patent: June 27, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Publication number: 20040261907Abstract: 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: ApplicationFiled: July 22, 2004Publication date: December 30, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Publication number: 20040261905Abstract: 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: ApplicationFiled: July 22, 2004Publication date: December 30, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Publication number: 20040261906Abstract: 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: ApplicationFiled: July 22, 2004Publication date: December 30, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Publication number: 20040033357Abstract: 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: ApplicationFiled: May 30, 2003Publication date: February 19, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa
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Patent number: 6686125Abstract: 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: GrantFiled: January 10, 2001Date of Patent: February 3, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Hoshi, Shingo Ishimaru, Keizo Ogawa, Kouichi Waki, Kiyotaka Fukino
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Patent number: 6468575Abstract: 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: GrantFiled: February 5, 2001Date of Patent: October 22, 2002Assignee: Fremont Beef CompanyInventors: Les Leech, Kohei Nomura, Keizo Ogawa, Ken Johnson, Jeff Brindley
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Publication number: 20020106433Abstract: 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: ApplicationFiled: February 5, 2001Publication date: August 8, 2002Inventors: Les Leech, Kohei Nomura, Keizo Ogawa, Ken Johnson, Jeff Brindley
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Publication number: 20020006580Abstract: 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: ApplicationFiled: June 6, 2001Publication date: January 17, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Shingo Ishimaru, Yoshio Tadakuma, Keizo Ogawa, Koukichi Waki, Yoshihisa Usami
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Publication number: 20010036592Abstract: 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: ApplicationFiled: January 10, 2001Publication date: November 1, 2001Inventors: Satoshi Hoshi, Shingo Ishimaru, Keizo Ogawa, Koukichi Waki, Kiyotaka Fukino
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Patent number: 6042467Abstract: 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: GrantFiled: December 21, 1998Date of Patent: March 28, 2000Assignee: Fremont Beef Co.Inventors: Leslie D. Leech, Keizo Ogawa, Ken Johnson
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Patent number: 5728879Abstract: 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: GrantFiled: March 25, 1997Date of Patent: March 17, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Jiro Tsukahara, Kiyoshi Takeuchi, Hideaki Satoh, Shun-ichi Ishikawa, Keizo Ogawa, Tomomi Ishino