TREA

Ping Hsien Tsai

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  • Walnut, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Keypad lockset
    • Patent number 8,176,761
    • Issue date May 15, 2012
    • EMTEK Products, Inc.
    • Birk Cliff Sorensen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Keypad lockset
    • Patent number 8,141,400
    • Issue date Mar 27, 2012
    • EMTEK Products, Inc.
    • Birk Cliff Sorensen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    CONCEALED FASTENER LOCKSET
    • Publication number 20150015003
    • Publication date Jan 15, 2015
    • PING HSIEN TSAI
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    CONCEALED FASTENER LOCKSET
    • Publication number 20140159392
    • Publication date Jun 12, 2014
    • EMTEK PRODUCTS, INC.
    • Ping Hsien Tsai
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    KEYPAD LOCKSET
    • Publication number 20120055213
    • Publication date Mar 8, 2012
    • BIRK Cliff SORENSEN
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    KEYPAD LOCKSET
    • Publication number 20100257906
    • Publication date Oct 14, 2010
    • Birk Cliff Sorensen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES