TREA

Atsushi Nakazawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wire for piston ring, and manufacturing method of piston ring
    • Patent number 11,603,929
    • Issue date Mar 14, 2023
    • TPR CO., LTD.
    • Atsushi Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Segment, combination oil ring, and manufacturing method for a segment
    • Patent number 10,626,991
    • Issue date Apr 21, 2020
    • TPR CO., LTD.
    • Atsushi Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Combination oil ring
    • Patent number 10,072,755
    • Issue date Sep 11, 2018
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combination oil ring
    • Patent number 9,845,873
    • Issue date Dec 19, 2017
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combination oil ring
    • Patent number 9,726,286
    • Issue date Aug 8, 2017
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Heat-sensitive recording material
    • Patent number 5,236,883
    • Issue date Aug 17, 1993
    • Oji Paper Co., Ltd.
    • Atsushi Nakazawa
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Heat-sensitive recording material
    • Patent number 5,196,394
    • Issue date Mar 23, 1993
    • Oji Paper Co., Ltd.
    • Atsushi Nakazawa
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Heat-sensitive recording material
    • Patent number 5,093,304
    • Issue date Mar 3, 1992
    • Oji Paper Co., Ltd.
    • Atsushi Nakazawa
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

  • Information Patent Application

    WIRE FOR PISTON RING, AND MANUFACTURING METHOD OF PISTON RING
    • Publication number 20220145990
    • Publication date May 12, 2022
    • TPR CO., LTD.
    • Atsushi Nakazawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SEGMENT, COMBINATION OIL RING, AND MANUFACTURING METHOD FOR A SEGMENT
    • Publication number 20190360584
    • Publication date Nov 28, 2019
    • TPR CO., LTD.
    • Atsushi NAKAZAWA
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    COMBINATION OIL RING
    • Publication number 20170002926
    • Publication date Jan 5, 2017
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COMBINATION OIL RING
    • Publication number 20170002925
    • Publication date Jan 5, 2017
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COMBINATION OIL RING
    • Publication number 20140246834
    • Publication date Sep 4, 2014
    • TPR CO., LTD.
    • Noriaki Ayuzawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...