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Patrick Cheng

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  • Kaoshiung Hsien, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Grindstone having a vacuum system in a pin chuck stepper
    • Patent number 6,176,770
    • Issue date Jan 23, 2001
    • United Microelectronics Corp.
    • Chung-Hsien Kao
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Container of coolant
    • Patent number 6,125,644
    • Issue date Oct 3, 2000
    • United Microelectronics, Corp.
    • Shih-Hsun Chiu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Container of coolant
    • Patent number 6,021,669
    • Issue date Feb 8, 2000
    • United Microelectronics Corp.
    • Shih-Hsun Chiu
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...