TREA

Zhou Wenhua

Follow

Person

  • Zhejiang, CN
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Strength-boosting drill chuck
    • Patent number 11,786,979
    • Issue date Oct 17, 2023
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Self-locking drill chuck
    • Patent number 11,458,547
    • Issue date Oct 4, 2022
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Self-locking drill chuck
    • Patent number 10,272,499
    • Issue date Apr 30, 2019
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Self-locking drill chuck
    • Patent number 10,252,347
    • Issue date Apr 9, 2019
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Self-locking drill chuck
    • Patent number 10,166,609
    • Issue date Jan 1, 2019
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Manually tightened drill chuck
    • Patent number 7,000,926
    • Issue date Feb 21, 2006
    • Zhe Jiang San Ou Machinery Co.LTD
    • Zhou Wenhua
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Manually tightened chuck
    • Patent number 6,899,342
    • Issue date May 31, 2005
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Manually tightened chuck
    • Patent number 6,899,343
    • Issue date May 31, 2005
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Manually tightened chuck
    • Patent number 6,612,587
    • Issue date Sep 2, 2003
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    Self-locking drill chuck
    • Publication number 20210039174
    • Publication date Feb 11, 2021
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Strength-boosting drill chuck
    • Publication number 20210001413
    • Publication date Jan 7, 2021
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SELF-LOCKING DRILL CHUCK
    • Publication number 20170334000
    • Publication date Nov 23, 2017
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SELF-LOCKING DRILL CHUCK
    • Publication number 20170304906
    • Publication date Oct 26, 2017
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SELF-LOCKING DRILL CHUCK
    • Publication number 20170225236
    • Publication date Aug 10, 2017
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    DRILL CHUCK FOR PREVENTING OVER-POSITION OPERATION
    • Publication number 20160318106
    • Publication date Nov 3, 2016
    • ZHEJIANG SANOU MACHINERY CO. LTD.
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SELF-LOCKING KEYLESS DRILL CHUCK
    • Publication number 20100127463
    • Publication date May 27, 2010
    • Wenhua ZHOU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Lock type manually tightened chuck
    • Publication number 20050087937
    • Publication date Apr 28, 2005
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Manually tightened chuck
    • Publication number 20040041357
    • Publication date Mar 4, 2004
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Manually tightened chuck
    • Publication number 20040032094
    • Publication date Feb 19, 2004
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    MANUALLY TIGHTENED CHUCK
    • Publication number 20030141675
    • Publication date Jul 31, 2003
    • Wenhua Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR