Patents by Inventor Kazutoshi Takeda

Kazutoshi Takeda 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).

  • Publication number: 20110039114
    Abstract: A grain-oriented electrical steel sheet has a tension film that does not include chromium. In the present invention, the tension film, including a phosphate and silica as constituents, includes a manganese compound and a potassium compound. The mole ratio K/Mn of potassium to manganese in the film is set to a certain range. However, the manganese described herein does not refer to manganese derived from a manganese phosphate included in raw materials of the film. The film can be produced by preparing a coating solution by adding a compound, which includes the phosphate and the silica and also includes the potassium and the manganese, and applying the coating solution on a grain-oriented electrical steel sheet after final annealing is completed, followed by drying and baking.
    Type: Application
    Filed: March 30, 2009
    Publication date: February 17, 2011
    Inventors: Fumiaki Takahashi, Kazutoshi Takeda, Hiroyasu Fujii, Shuichi Yamazaki, Yoshiaki Natori
  • Publication number: 20110039120
    Abstract: An inorganic-organic composite film is formed by coating a application liquid containing an inorganic component and an organic resin on a surface of a steel sheet, and baking the application liquid on the surface of the steel sheet. The application liquid contains phosphate as the inorganic component, and further contains an inorganic powder having a BET specific surface area of 10 m2/g or more and exhibiting a particle size distribution with a 50% cumulative particle size of 5 ?m or less and with a 90% cumulative particle size of 15 ?m or less when measured by a laser diffraction particle size analyzer, the powder being contained at a ratio of no less than 1 mass %, nor more than 50 mass % with respect to a solid content of the phosphate.
    Type: Application
    Filed: June 11, 2009
    Publication date: February 17, 2011
    Inventors: Hiroyasu Fujii, Tetsuya Sasaki, Yutaka Matsumoto, Kazutoshi Takeda, Tesshu Murakawa
  • Patent number: 7887646
    Abstract: The present invention provides oriented magnetic steel plate with excellent coating adhesion, in particular coating edge peeling resistance, that is, oriented magnetic steel plate with excellent coating adhesion containing, by mass %, Si: 1.8 to 7% and having a primary coating having forsterite as its main ingredient on its surface, said oriented magnetic steel plate characterized in that said primary coating contains one or more of Ce, La, Pr, Nd, Sc, and Y in an areal weight per side of 0.001 to 1000 mg/m2; characterized in that said primary coating contains Ti in an areal weight per side of 1 to 800 mg/m2; and characterized in that said primary coating contains one or more of Sr, Ca, and Ba in an areal weight per side of 0.01 to 100 mg/m2.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: February 15, 2011
    Assignee: Nippon Steel Corporation
    Inventors: Eiichi Nanba, Yuji Kubo, Kazutoshi Takeda, Satoshi Arai, Hotaka Honma, Kenichi Murakami, Hideyuki Kobayashi
  • Patent number: 7850792
    Abstract: The present invention provides a grain-oriented electrical steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent for the same, so provides grain-oriented electrical steel sheet having an insulating film not containing chromium characterized by the insulating film containing a phosphate and one or more compounds selected from inorganic compounds of Fe, Ni, Co, Cu, Sr, and Mo in an amount, as metal elements, of 0.06 to 2.10 moles per mole of phosphate, and an insulating film agent of the same.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: December 14, 2010
    Assignees: Nippon Steel Corporation, Nittetsu Plant Designing Corporation
    Inventors: Osamu Tanaka, Norikazu Fujii, Hiroyasu Fujii, Kazutoshi Takeda
  • Patent number: 7733676
    Abstract: A non-contact power supply system is provided in which current phases of induction lines are matched. According to the output current of a power supply unit (21) and the power consumption of induction lines (19), a lead time corresponding to a phase difference between the output currents of the induction lines is determined. A signal for driving transistors (52) is advanced ahead of a drive synchronization signal (?) according to the lead time.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: June 8, 2010
    Assignee: Daifuku Co., Ltd.
    Inventors: Makoto Nunoya, Kazutoshi Takeda
  • Publication number: 20090286064
    Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.
    Type: Application
    Filed: July 30, 2009
    Publication date: November 19, 2009
    Applicants: KITAGAWA INDUSTRIES CO., LTD., SEIKO INSTRUMENTS INC.
    Inventors: Morinobu ENDO, Tetsuo UCHIYAMA, Akio YAMAGUCHI, Teruaki YUOKA, Hiroshi AOYAMA, Kazutoshi TAKEDA, Yoshifumi MAEHARA, Masato Takenaka, Koichiro Jujo, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20090233114
    Abstract: Grain-oriented electrical steel sheet having a chrome-free high tensile strength insulating film characterized by comprising steel sheet on the surface of which is formed an insulating film containing a phosphate and colloidal silica as main ingredients and containing crystalline magnesium phosphate uniformly dispersed over the entire surface.
    Type: Application
    Filed: May 18, 2007
    Publication date: September 17, 2009
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazutoshi Takeda, Fumiaki Takahashi, Shuichi Yamazaki, Hiroyasu Fujii, Fumikazu Andou
  • Publication number: 20090208764
    Abstract: The present invention provides a grain-oriented electrical steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent for the same, so provides grain-oriented electrical steel sheet having an insulating film not containing chromium characterized by the insulating film containing a phosphate and one or more compounds selected from inorganic compounds of Fe, Ni, Co, Cu, Sr, and Mo in an amount, as metal elements, of 0.06 to 2.10 moles per mole of phosphate, and an insulating film agent of the same.
    Type: Application
    Filed: July 14, 2005
    Publication date: August 20, 2009
    Inventors: Osamu Tanaka, Norikazu Fujii, Hiroyasu Fujii, Kazutoshi Takeda
  • Patent number: 7575800
    Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: August 18, 2009
    Assignees: Kitagawa Industries Co., Ltd., Seiko Instruments Inc.
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Teruaki Yuoka, Hiroshi Aoyama, Kazutoshi Takeda, Yoshifumi Maehara, Masato Takenaka, Koichiro Jujo, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20090047537
    Abstract: The present invention provides oriented magnetic steel plate with excellent coating adhesion, in particular coating edge peeling resistance, that is, oriented magnetic steel plate with excellent coating adhesion containing, by mass %, Si: 1.8 to 7% and having a primary coating having forsterite as its main ingredient on its surface, said oriented magnetic steel plate characterized in that said primary coating contains one or more of Ce, La, Pr, Nd, Sc, and Y in an areal weight per side of 0.001 to 1000 mg/m2; characterized in that said primary coating contains Ti in an areal weight per side of 1 to 800 mg/m2; and characterized in that said primary coating contains one or more of Sr, Ca, and Ba in an areal weight per side of 0.01 to 100 mg/m2.
    Type: Application
    Filed: May 19, 2006
    Publication date: February 19, 2009
    Inventors: Eiichi Nanba, Yuji Kubo, Kazutoshi Takeda, Satoshi Arai, Hotaka Honma, Kenichi Murakami, Hideyuki Kobayashi
  • Publication number: 20090003022
    Abstract: A non-contact power supply system is provided in which current phases of induction lines are matched. According to the output current of a power supply unit (21) and the power consumption of induction lines (19), a lead time corresponding to a phase difference between the output currents of the induction lines is determined. A signal for driving transistors (52) is advanced ahead of a drive synchronization signal (?) according to the lead time.
    Type: Application
    Filed: March 30, 2005
    Publication date: January 1, 2009
    Inventors: Makoto Nunoya, Kazutoshi Takeda
  • Publication number: 20080271819
    Abstract: The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is produced by any of the processes of: before decarburization annealing, applying preliminary annealing for 1 to 20 sec. at 700° C. or higher and controlling an atmosphere in the temperature range; controlling the maximum attaining temperature B (° C.) before final cold rolling so that the maximum attaining temperature B may satisfy the expression, ?10×ln(A)+1,100?B?10×ln(A)+1,220, in accordance with a Bi content A (ppm) and at the same time heating the steel sheet cold rolled to the final thickness to 700° C. or higher within 10 sec. or at a heating rate of 100° C./sec. or more before decarburization annealing, or immediately thereafter applying preliminary annealing for 1 to 20 sec. at 700° C.
    Type: Application
    Filed: June 27, 2008
    Publication date: November 6, 2008
    Applicant: Nippon Steel Corporation,
    Inventors: Eiichi Nanba, Katsuyuki Yanagihara, Satoshi Arai, Shuichi Yamazaki, Fumikazu Ando, Kazutoshi Takeda, Yousuke Kurosaki, Nobuo Tachibana
  • Patent number: 7399369
    Abstract: The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-oriented electrical steel sheet is produced by any of the processes of: before decarburization annealing, applying preliminary annealing for 1 to 20 sec. at 700° C. or higher and controlling an atmosphere in the temperature range; controlling the maximum attaining temperature B (° C.) before final cold rolling so that the maximum attaining temperature B may satisfy the expression, ?10×ln(A)+1,100?B?10×ln(A)+1,220, in accordance with a Bi content A (ppm) and at the same time heating the steel sheet cold rolled to the final thickness to 700° C. or higher within 10 sec. or at a heating rate of 100° C./sec. or more before decarburization annealing, or immediately thereafter applying preliminary annealing for 1 to 20 sec. at 700° C.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: July 15, 2008
    Assignee: Nippon Steel Corporation
    Inventors: Eiichi Nanba, Katsuyuki Yanagihara, Satoshi Arai, Shuichi Yamazaki, Fumikazu Ando, Kazutoshi Takeda, Yousuke Kurosaki, Nobuo Tachibana
  • Patent number: 7170827
    Abstract: The invention relates to a timepiece which has a resin bearing section. Moreover, the invention relates to a wheel train apparatus which has a resin bearing section. The invention is constituted by the timepiece provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin. Alternatively the invention is constituted by the wheel train apparatus provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 30, 2007
    Assignees: Kitagawa Industries Co., Ltd, Seiko Instruments, Inc.
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Patent number: 7167420
    Abstract: The invention relates to a timepiece which has a resin substrate, rotors, and wheel trains, and relates to a wheel train apparatus which has a resin substrate, bearing members, gear wheel, and the like. The invention is constituted by a timepiece comprising; a gear wheel, and a substrate which supports a shaft of a rotor and/or a shaft of the gear wheel, the substrate being formed from a filled resin. Alternatively the invention is constituted by a wheel train apparatus comprising: a gear wheel; a substrate which supports one shaft section of the gear wheel, and a bridge which rotatably supports an other shaft section of the gear wheel, the substrate and the bridge being formed from a filled resin.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 23, 2007
    Assignees: Kitagawa Industries Co., Ltd, Seiko Instruments Inc.
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20060164925
    Abstract: The invention relates to a timepiece which has a resin substrate, rotors, and wheel trains, and relates to a wheel train apparatus which has a resin substrate, bearing members, gear wheel, and the like. The invention is constituted by a timepiece comprising; a gear wheel, and a substrate which supports a shaft of a rotor and/or a shaft of the gear wheel, the substrate being formed from a filled resin. Alternatively the invention is constituted by a wheel train apparatus comprising: a gear wheel; a substrate which supports one shaft section of the gear wheel, and a bridge which rotatably supports an other shaft section of the gear wheel, the substrate and the bridge being formed from a filled resin.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 27, 2006
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20050196087
    Abstract: The present invention relates to a ball bearing that includes a plurality of balls and a retainer. The present invention also relates to a self-winding timepiece that is provided with a ball bearing. The present invention employs a retainer that is formed from a resin that contains filler as a component element of the ball bearing. Alternatively, the present invention employs a ball bearing that has a retainer that is formed from a resin that contains filler as a component element of the self-winding timepiece.
    Type: Application
    Filed: February 23, 2005
    Publication date: September 8, 2005
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20050128884
    Abstract: The invention relates to a timepiece which has a resin bearing section. Moreover, the invention relates to a wheel train apparatus which has a resin bearing section. The invention is constituted by the timepiece provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin. Alternatively the invention is constituted by the wheel train apparatus provided with a gear wheel and supporting members which support the gear wheel, the supporting members being formed from a filler containing resin.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 16, 2005
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20050127782
    Abstract: The invention relates to an ultrasonic motor, an electronic timepiece, and an electronic apparatus, which includes an ultrasonic rotor formed from a base resin of thermoplastic resin. Moreover, the invention includes an ultrasonic rotor which contacts with an ultrasonic stator under pressure, the ultrasonic rotor being formed from a filler containing resin. Alternatively an electronic timepiece with the ultrasonic motor is constructed. Furthermore, an electronic apparatus with the ultrasonic motor which is constructed.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 16, 2005
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro
  • Publication number: 20050128877
    Abstract: The present invention relates to an electronic timepiece. Moreover, the present invention relates to a conductive spring which can be used in an alarm electronic timepiece, or the like. Also the present invention is constituted to include one or more curved sections so as to be deformable, and constitutes a conductive spring formed from a filler containing resin. Alternatively it constitutes an electronic timepiece in which this conductive spring is used for transferring a buzzer signal. Furthermore it constitutes a conductive part comprising this conductive spring and a housing which retains the conductive spring.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 16, 2005
    Inventors: Morinobu Endo, Tetsuo Uchiyama, Akio Yamaguchi, Yasuo Kondo, Hiroshi Aoyama, Koichiro Jujo, Kazutoshi Takeda, Masato Takenaka, Shigeo Suzuki, Takeshi Tokoro