TREA

Zheng Chen

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  • Sunnyvale, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Slow closing door hinge
    • Patent number 9,957,743
    • Issue date May 1, 2018
    • Zheng Chen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door hinge with a built-in damper
    • Patent number 5,867,866
    • Issue date Feb 9, 1999
    • Zheng Chen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    A SLOW-CLOSING DOOR HINGE
    • Publication number 20150361708
    • Publication date Dec 17, 2015
    • Zheng CHEN
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES