Patents by Inventor Katsuyoshi Yamashita

Katsuyoshi Yamashita 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: 6898959
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: May 31, 2005
    Assignee: NSK Ltd.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 6897610
    Abstract: The present invention provides a plasma display panel in which a space between a first plate and a second plate facing each other is filled with a discharge gas, a plurality of pairs of display electrodes made of Ag or Cu are formed on a surface of the first plate facing the second plate, and the surface of the first plate is covered with a dielectric layer covering the plurality of pairs of display electrodes, where the dielectric layer is made of a glass that contains at least ZnO and 10 wt % or less of R2O and does not substantially contain PbO and Bi2O3, and a product of permittivity ? and loss factor tan ? of the dielectric layer is 0.12 or less, wherein R is selected from a group consisting of K, Rb, Cs, Cu, and Ag.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 24, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Aoki, Katsuyoshi Yamashita, Mitsuhiro Ohtani, Junichi Hibino
  • Patent number: 6820724
    Abstract: A prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a liquid volume discharge device to a rolling element 703 of a rolling bearing 700 when the lubricant discharge port 8 is positioned directly above and close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: November 23, 2004
    Assignee: NSK, Ltd.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Publication number: 20040211241
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Application
    Filed: May 20, 2004
    Publication date: October 28, 2004
    Applicant: NSK LTD.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 6777022
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: August 17, 2004
    Assignee: NSK Ltd.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 6755071
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port (8) of a prescribed liquid volume discharge device to a rolling element (703) of a rolling bearing (700) in a state in which the lubricant discharge port (8) is positioned directly above and sufficiently close to the rolling element (703), whereby the lubricant is applied to the interior of the rolling bearing (700). Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing (700).
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: June 29, 2004
    Assignee: NSK, Ltd.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Publication number: 20040065510
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Application
    Filed: October 6, 2003
    Publication date: April 8, 2004
    Applicant: NSK LTD.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Publication number: 20030010090
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Application
    Filed: August 22, 2002
    Publication date: January 16, 2003
    Applicant: NSK LTD.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 6477885
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: November 12, 2002
    Assignee: NSK Ltd.
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 6439943
    Abstract: The object of the present invention is to provide a high-intensity, reliable plasma display panel even when the cell structure is fine by resolving the problems such as a low visible light transmittance and low voltage endurance of a dielectric glass layer. The object is realized by forming the dielectric glass layer in the manner given below. A glass paste including a glass powder is applied on the front glass substrate or the back glass substrate, according to a screen printing method, a die coating method, a spray coating method, a spin coating method, or a blade coating method, on each of which electrodes have been formed, and the glass powder in the applied glass paste is fired. The average particle diameter of the glass powder is 0.1 to 1.5 &mgr;m and the maximum particle diameter is equal to or smaller than three times the average particle diameter.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: August 27, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Aoki, Yasuhisa Ishikura, Katsuyoshi Yamashita, Shinya Fujiwara, Yasuyuki Akata
  • Publication number: 20010023795
    Abstract: In a lubricant application system, a prescribed volume of lubricant is transferred from a lubricant discharge port 8 of a prescribed liquid volume discharge device to a rolling element 703 of a rolling bearing 700 in a state in which the lubricant discharge port 8 is positioned directly above and sufficiently close to the rolling element 703, whereby the lubricant is applied to the interior of the rolling bearing 700. Further, the application system inspects whether or not a prescribed volume of lubricant is injected from the discharge device for injecting a lubricant into the interior of a rolling bearing 700.
    Type: Application
    Filed: May 17, 2001
    Publication date: September 27, 2001
    Inventors: Masaaki Sekine, Katsuyoshi Yamashita, Michiharu Naka
  • Patent number: 5993543
    Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 30, 1999
    Assignee: Masaki Aoki Et Al.
    Inventors: Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami, Hiroyuki Kawamura, Hiroyoshi Tanaka, Ryuichi Murai, Yasuhisa Ishikura, Yutaka Nishimura, Katsuyoshi Yamashita
  • Patent number: 5770921
    Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectrics glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: June 23, 1998
    Assignee: Matsushita Electric Co., Ltd.
    Inventors: Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami, Hiroyuki Kawamura, Hiroyoshi Tanaka, Ryuichi Murai, Yasuhisa Ishikura, Yutaka Nishimura, Katsuyoshi Yamashita
  • Patent number: 4414373
    Abstract: In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 --O--R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: November 8, 1983
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Akinobu Shiga, Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Seiichiro Ima, Katsuyoshi Yamashita
  • Patent number: 4355144
    Abstract: In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 -O-R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: October 19, 1982
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Akinobu Shiga, Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Seiichiro Ima, Katsuyoshi Yamashita
  • Patent number: RE40647
    Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: March 10, 2009
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami, Hiroyuki Kawamura, Hiroyoshi Tanaka, Ryuichi Murai, Yasuhisa Ishikura, Yutaka Nishimura, Katsuyoshi Yamashita
  • Patent number: RE40871
    Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 18, 2009
    Assignee: Panasonic Corporation
    Inventors: Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami, Hiroyuki Kawamura, Hiroyoshi Tanaka, Ryuichi Murai, Yasuhisa Ishikura, Yutaka Nishimura, Katsuyoshi Yamashita
  • Patent number: RE41465
    Abstract: A plasma display device has a first plate and a second plate which face each other with a discharge space therebetween, and a sealing member which is provided between the first and second plates to seal the discharge space at edges of the first and second plates. A plurality of electrodes are formed on the inner major surface of the first or second plate. An electrode diffusion preventive layer is formed in each area where the plurality of electrodes cross over the sealing member, so as to avoid direct contact between the plurality of electrodes and the sealing member. As a result, problems such as breaking of the electrodes can be avoided. This construction is especially effective when the electrodes contain Ag.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Katsuyoshi Yamashita, Yoshiki Sasaki, Junichi Hibino, Masafumi Ookawa, Masaki Aoki
  • Patent number: RE41503
    Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: August 17, 2010
    Assignee: Panasonic Corporation
    Inventors: Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami, Hiroyuki Kawamura, Hiroyoshi Tanaka, Ryuichi Murai, Yasuhisa Ishikura, Yutaka Nishimura, Katsuyoshi Yamashita, Yasuko Nishimura, Syunsuke Nishimura, Emi Kawahara