Patents by Inventor Masamichi Kezuka

Masamichi Kezuka 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: 9034215
    Abstract: The present invention provides a noble metal fine particle with a protein adsorbed thereon, including a noble metal fine particle, and a protein adsorbed on a surface of the noble metal fine particle. The protein has an isoelectric point in a range of pH 4.0 to 7.5. An amount of the protein adsorbed is in a range of 3 to 55.1 wt % with respect to a total weight of the noble metal fine particle and the protein. The noble metal fine particle with a protein adsorbed thereon according to the present invention has excellent redispersibility.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 19, 2015
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Ryohei Ogawa, Kiyoshi Miyashita, Masamichi Kezuka
  • Publication number: 20130069017
    Abstract: The present invention provides a noble metal fine particle with a protein adsorbed thereon, including a noble metal fine particle, and a protein adsorbed on a surface of the noble metal fine particle. The protein has an isoelectric point in a range of pH 4.0 to 7.5. An amount of the protein adsorbed is in a range of 3 to 55.1 wt % with respect to a total weight of the noble metal fine particle and the protein. The noble metal fine particle with a protein adsorbed thereon according to the present invention has excellent redispersibility.
    Type: Application
    Filed: May 19, 2011
    Publication date: March 21, 2013
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Ryohei Ogawa, Kiyoshi Miyashita, Masamichi Kezuka
  • Publication number: 20130040225
    Abstract: The reinforcing sheet according to the present invention includes glass fibers and an organic binder that coats the glass fibers, and has voids to be filled with a solid electrolyte. The organic binder is (i) an organic polymer containing no element other than carbon, hydrogen and fluorine; or (ii) an organic polymer having a main chain and side chains, the main chain being perfluoroalkylene, and at least one of the side chains being terminated with a sulfonic acid group or a carboxylic acid group. The reinforcing sheet according to the present invention is suitable for improving the durability of a solid electrolyte membrane and maintaining the chemical stability thereof.
    Type: Application
    Filed: March 7, 2011
    Publication date: February 14, 2013
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Masaki Onishi, Masamichi Kezuka, Shuhei Sakaguchi
  • Patent number: 7759281
    Abstract: There is disclosed a photocatalyst which comprises a substrate having a photocatalytic function and metallic nanocolloid particles that are supported on the substrate by the use of a metallic nanocolloid liquid substantially free from a protective colloid formation agent. A highly active photocatalyst containing metallic ultrafine particles is provided by bringing a substrate such as fine particles having a photocatalytic function into contact with a metallic nanocolloid liquid which is substantially free from a protective colloid formation agent, and which has favorable dispersion stability even if containing metallic nanocolloid particles in a relatively high concentration. Accordingly the photocatalyst containing metallic ultrafine particles can be produced at a low cost without being restricted on the place of production.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: July 20, 2010
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Masamichi Kezuka, Kiyoshi Miyashita, Ryohei Ogawa, Akihiro Hishinuma
  • Patent number: 7713328
    Abstract: There are disclosed metallic colloid particles containing platinum fine particles wherein platinum colloid particles are supported on the surfaces of gold colloid particles, and the platinum fine particles have an average particle diameter of at most 5 nm; a process for producing the metallic colloid particles; a metallic corpuscular carrying body wherein the above metallic colloid particles are supported on a carrier and a process for producing the carrying body. The resultant metallic colloid particles, which have higher sensitivity, are well suited as a label for immunological measurement and protein-staining agent for various proteins.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: May 11, 2010
    Assignees: Nippon Sheet Glass Co., Ltd., BL KK
    Inventors: Kiyoshi Miyashita, Ryohei Ogawa, Masamichi Kezuka
  • Patent number: 7648938
    Abstract: The present invention provides a metal nanocolloidal liquid characterized by containing a dispersion medium and nanocolloidal metal particles, and containing substantially no protective colloid-forming agent; and a method for producing a metal-on-carrier, characterized by including causing nanocolloidal metal particles to be carried on a carrier by use of the metal nanocolloidal liquid. According to the production method, nanocolloidal metal particles can be efficiently caused to be carried on a carrier, and a metal-on-carrier which is useful in a variety of fields can be industrially advantageously produced.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: January 19, 2010
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Kiyoshi Miyashita, Masamichi Kezuka, Tetsuro Yoshii, Ryohei Ogawa, Akihiro Hishinuma, Tsutomu Sakai, Toyo Yano
  • Publication number: 20090286454
    Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.01 ?pm and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.
    Type: Application
    Filed: June 10, 2009
    Publication date: November 19, 2009
    Applicants: NIPPON SHEET GLASS CO., LTD., HOYA CORPORATION
    Inventors: Masamichi Kezuka, Koji Okuhata, Kensuke Matsuno, Takeo Watanabe
  • Patent number: 7604882
    Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.01 ?m and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 20, 2009
    Assignees: Nippon Sheet Glass Co., Ltd., Hoya Corporation
    Inventors: Masamichi Kezuka, Koji Okuhata, Kensuke Matsuno, Takeo Watanabe
  • Publication number: 20070093377
    Abstract: The present invention provides a metal nanocolloidal liquid characterized by containing a dispersion medium and nanocolloidal metal particles, and containing substantially no protective colloid-forming agent; and a method for producing a metal-on-carrier, characterized by including causing nanocolloidal metal particles to be carried on a carrier by use of the metal nanocolloidal liquid. According to the production method, nanocolloidal metal particles can be efficiently caused to be carried on a carrier, and a metal-on-carrier which is useful in a variety of fields can be industrially advantageously produced.
    Type: Application
    Filed: December 15, 2004
    Publication date: April 26, 2007
    Inventors: Kiyoshi Miyashita, Masamichi Kezuka, Tetsuro Yoshii, Ryohei Ogawa, Akihiro Hishinuma, Tsutomu Sakai, Toyo Yano
  • Publication number: 20060199045
    Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.01 ?m and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.
    Type: Application
    Filed: April 20, 2006
    Publication date: September 7, 2006
    Applicants: NIPPON SHEET GLASS CO., LTD., HOYA CORPORATION
    Inventors: Masamichi Kezuka, Koji Okuhata, Kensuki Matsuno, Takao Watanabe
  • Publication number: 20060188756
    Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.01 ?m and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.
    Type: Application
    Filed: April 20, 2006
    Publication date: August 24, 2006
    Applicants: NIPPON SHEET GLASS CO., LTD., HOYA CORPORATION
    Inventors: Masamichi Kezuka, Koji Okuhata, Kensuki Matsuno, Takeo Watanabe
  • Patent number: 7065984
    Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.0l ?m and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: June 27, 2006
    Assignees: Nippon Sheet Glass Co., Ltd., Hoya Corporation
    Inventors: Masamichi Kezuka, Koji Okuhata, Kensuki Matsuno, Takeo Watanabe
  • Publication number: 20050186129
    Abstract: There are disclosed metallic colloid particles containing platinum fine particles wherein platinum colloid particles are supported on the surfaces of gold colloid particles, and the platinum fine particles have an average particle diameter of at most 5 nm; a process for producing the metallic colloid particles; a metallic corpuscular carrying body wherein the above metallic colloid particles are supported on a carrier and a process for producing the carrying body. The resultant metallic colloid particles, which have higher sensitivity, are well suited as a label for immunological measurement and protein-staining agent for various proteins.
    Type: Application
    Filed: February 16, 2005
    Publication date: August 25, 2005
    Inventors: Kiyoshi Miyashita, Ryohei Ogawa, Masamichi Kezuka
  • Publication number: 20050159306
    Abstract: There is disclosed a photocatalyst which comprises a substrate having a photocatalytic function and metallic nanocolloid particles that are supported on the substrate by the use of a metallic nanocolloid liquid substantially free from a protective colloid formation agent. A highly active photocatalyst containing metallic ultrafine particles is provided by bringing a substrate such as fine particles having a photocatalytic function into contact with a metallic nanocolloid liquid which is substantially free from a protective colloid formation agent, and which has favorable dispersion stability even if containing metallic nanocolloid particles in a relatively high concentration. Accordingly the photocatalyst containing metallic ultrafine particles can be produced at a low cost without being restricted on the place of production.
    Type: Application
    Filed: January 18, 2005
    Publication date: July 21, 2005
    Inventors: Masamichi Kezuka, Kiyoshi Miyashita, Ryohei Ogawa, Akihiro Hishinuma
  • Patent number: 6845635
    Abstract: There are provided a method of manufacturing a glass substrate for information recording media that allows the inner and outer peripheral edge surfaces of the glass substrate for information recording media to be smoothed easily and inexpensively, a glass substrate for information recording media manufactured using this method, and an information recording medium using this glass substrate. A donut-shaped glass disk for information recording media having an outer peripheral edge surface and an inner peripheral edge surface is prepared. At least one of the outer peripheral edge surface and the inner peripheral edge surface of the glass disk is smoothed by melt-heating to a temperature at or above the softening point of the glass by irradiating with at least one laser beam.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: January 25, 2005
    Assignee: Hoya Corporation
    Inventors: Takeo Watanabe, Takao Miwa, Satoshi Jibiki, Masamichi Kezuka, Kensuke Matsuno
  • Publication number: 20020108400
    Abstract: There are provided a method of manufacturing a glass substrate for information recording media that allows the inner and outer peripheral edge surfaces of the glass substrate for information recording media to be smoothed easily and inexpensively, a glass substrate for information recording media manufactured using this method, and an information recording medium using this glass substrate. A donut-shaped glass disk for information recording media having an outer peripheral edge surface and an inner peripheral edge surface is prepared. At least one of the outer peripheral edge surface and the inner peripheral edge surface of the glass disk is smoothed by melt-heating to a temperature at or above the softening point of the glass by irradiating with at least one laser beam.
    Type: Application
    Filed: November 5, 2001
    Publication date: August 15, 2002
    Inventors: Takeo Watanabe, Takao Miwa, Satoshi Jibiki, Masamichi Kezuka, Kensuke Matsuno