Patents by Inventor Naoji Nakamura

Naoji Nakamura 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: 5849113
    Abstract: High temperature coefficient of resistance (TCR) appropriate for the sensor evices is attained by an alloy consisting, by atomic %, of from 5 to 65% of Fe, and from 0.01 to 20% in total of at least one auxiliary component selected from the group consisting of 20% or less of Ni, 20% or less of Co, 20% or less of Ag, 20% or less of Au, 20% or less of Pt, 10% or less of Rh, 10% or less of Ir, 10% or less of Os, 10% or less of Ru, 10% or less of Cr, 5% or less of V, 5% or less of Ti, 5% or less of Zr, 5% or less of Hf, 8% or less of Mo, 5% or less of Nb, 10% or less of W, 8% or less of Ta, 3% or less of Ga, 3% or less of Ge, 3% or less of In, 3% or less of Be, 5% or less of Sn, 3% or less of Sb, 5% or less of Cu, 5% or less of Al, 5% or less of Si, 2% or less of C, 2% or less of B, and 5% or less of a rare earth element, the balance being essentially Pd and minor amount of impurities, and said alloy having 4000.times.10.sup.-6.degree. C..sup.-1 or more of TCR in a temperature range of from 0.degree. to 200.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 15, 1998
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Yuetsu Murakami, Katashi Masumoto, Naoji Nakamura
  • Patent number: 5323410
    Abstract: The present invention relates to a solid solution semiconductor laser element material which can be used for a laser element which oscillates within an inflated region of wavelength range of 0.4-8 .mu.m, can vary wavelength and can be operable in the vicinity of room temperature. The present invention more particularly relates to a material which can be used for a laser element having a lattice matching type double hetero-structure or lattice matching type quantum well structure.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: June 21, 1994
    Assignee: The Foundation: The Research Institute of Electric and Magentic Alloys
    Inventors: Katashi Masumoto, Katsumi Mochizuki, Naoji Nakamura, Seishi Abe
  • Patent number: 5154247
    Abstract: Disclosed herein is a load cell provided with a high-precision load-sensing member of ceramic on which are formed patterns of thin-film resistance for strain gages which are not subject to breakage and variation of resistance. The load cell comprises a bending beam of ceramic material and strain gages of thin-film resistance formed thereon, with the bending beam having a surface coated with amorphous glass on which are formed said strain gages of thin-film resistance. The strain gages are formed from an alloy composed of iron and one or more selected from chromium, cobalt, tungsten, molybdenum, niobium, and tantalum, and a small amount of impurities.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: October 13, 1992
    Assignee: Teraoka Seiko Co., Limited
    Inventors: Yoshinobu Nishimura, Hiroshi Tanaka, Naoji Nakamura
  • Patent number: 4684416
    Abstract: The disclosed alloy has a temperature coefficient of electric resistance h an absolute value smaller than 100 ppm/.degree.C. in a temperature range between the order-disorder transformation point and melting point thereof, which alloy is made by molding an alloy consisting of 59.0-88.0 wt. % of palladium and the remainder of iron with a small amount of impurities, quenching the molded alloy from a temperature between the above-mentioned order-disorder transformation point and melting point to room temperature, cold working the quenched alloy for shaping, and annealing the shaped alloy.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: August 4, 1987
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Naoji Nakamura
  • Patent number: 4518439
    Abstract: The disclosed alloy has a temperature coefficient of electric resistance with an absolute value smaller than 100 ppm/.degree.C. in a temperature range between the order-disorder transformation point and melting point thereof, which alloy is made by molding an alloy consisting of 59.0-88.0 wt. % of palladium and the remainder of iron with a small amount of impurities, quenching the molded alloy from a temperature between the above-mentioned order-disorder transformation point and melting point to room temperature, cold working the quenched alloy for shaping, and annealing the shaped alloy.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 21, 1985
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Naoji Nakamura
  • Patent number: 4517156
    Abstract: An electrical resistant alloy for use in a sensing coil having a small temperature dependence of electric resistance over a wide temperature range and a method of producing the same are disclosed. This alloy consists of 55.5 to 60.6 wt % of palladium and 44.5 to 39.4 wt % of silver and an inevitable amount of impurities, and has a temperature coefficient of electric resistance of .+-.20.times.10.sup.-6 /.degree.C. over a temperature range of -50.degree. C. to +730.degree. C.
    Type: Grant
    Filed: March 13, 1984
    Date of Patent: May 14, 1985
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Naoji Nakamura
  • Patent number: 4468370
    Abstract: An electrical resistant alloy for use in a sensing coil having a small temperature dependence of electric resistance over a wide temperature range and a method of producing the same are disclosed. This alloy consists of 55.5 to 60.6 wt % of palladium and 44.5 to 39.4 wt % of silver and an inevitable amount of impurities, and has a temperature coefficient of electric resistance of .+-.20.times.10.sup.-6 /.degree.C. over a temperature range of -50.degree. C. to +730.degree. C.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: August 28, 1984
    Assignee: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Naoji Nakamura
  • Patent number: 4374679
    Abstract: An electrical resistant alloy for use in a sensing coil having a small temperature dependence of electric resistance over a wide temperature range and a method of producing the same are disclosed. This alloy consists of 55.5 to 60.6 wt % of palladium and 44.5 to 39.4 wt % of silver and an inevitable amount of impurities, and has a temperature coefficient of electric resistance of .+-.20.times.10.sup.-6 /.degree.C. over a temperature range of -50.degree. C. to +730.degree. C.
    Type: Grant
    Filed: May 20, 1980
    Date of Patent: February 22, 1983
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Naoji Nakamura
  • Patent number: 4082579
    Abstract: A rectangular hysteresis magnetic alloy consisting of 0.5-25 wt. % of Ta the balance of Fe and a rectangular hysteresis magnetic alloy consisting of 0.5-25 wt. % of Ta, 0.01-60 wt. % in total amount of at least one element selected from the group consisting of 0-10% of V, 0-0.5% of Nb, 0-35% of Cr, 0-20% of Mo, 0-20% of W, 0-25% of Ni, 0-25% of Cu, 0-40% of Co, 0-5% of Ti, 0-5% of Zr, 0-5% of Si, 0-10% of Al, 0-5% of Ge, 0-5% of Sn, 0-5% of Sb, 0-3% of Be, 0-15% of Mn, 0-2% of Ce and 0-1.5% of C, and the balance of Fe have an excellent rectangular hysteresis loop, a coercive force of more than 2 oerstads, excellent forgeability and workability, and are particularly suitable as a magnetic material for electromagnetic devices requiring rectangular hysteresis loop.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: April 4, 1978
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Yuetsu Murakami, Naoji Nakamura
  • Patent number: 4059462
    Abstract: A rectangular hysteresis magnetic alloy consisting of 0.5-10 wt. % of Nb the balance of Fe and a rectangular hysteresis magnetic alloy consisting of 0.5-10 wt. % of Nb, 0.01-60 wt. % in total amount of at least one element selected from the group consisting of 0-10% of V, 0-25% of Ta, 0-25% of Cr, 0-20% of Mo, 0-10% of W, 0-30% of Ni, 0-20% of Cu, 0-45% of Co, 0-5% of Ti, 0-5% of Zr, 0-5% of Si, 0-5% of Al, 0-5% of Ge, 0-5% of Sn, 0-5% of Sb, 0-3% of Be, 0-15% of Mn, 0-2% of Ce and 0-1.5% of C, and the balance of Fe have an excellent rectangular hysteresis loop, a coercive force of more than 2 oersteds, excellent forgeability and workability and are particularly suitable as a magnetic material for electromagnetic devices requiring rectangular hysteresis loop.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: November 22, 1977
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Hakaru Masumoto, Yuetsu Murakami, Naoji Nakamura