TREA

Cha P. Doh

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  • Sudbury, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Blended potting resins and use thereof
    • Patent number 10,981,117
    • Issue date Apr 20, 2021
    • Entegris, Inc.
    • Ganapathysubramanian Iyer
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Exchange apparatus
    • Patent number 8,091,618
    • Issue date Jan 10, 2012
    • Entegris, Inc.
    • Cha P. Doh
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Perfluorinated thermoplastic filter cartridge
    • Patent number 7,347,937
    • Issue date Mar 25, 2008
    • Entegris, Inc.
    • Kwok-Shun Cheng
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Exchange apparatus
    • Patent number 7,308,932
    • Issue date Dec 18, 2007
    • Entegris, Inc.
    • Cha P. Doh
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Hollow fiber membrane contactor
    • Patent number 6,805,731
    • Issue date Oct 19, 2004
    • Mykrolis Corporation
    • Kwok-Shun Cheng
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method for manufacturing hollow fiber membranes
    • Patent number 6,663,745
    • Issue date Dec 16, 2003
    • Mykrolis Corporation
    • Kwok-Shun Cheng
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Hollow fiber membrane contactor
    • Patent number 6,582,496
    • Issue date Jun 24, 2003
    • Mykrolis Corporation
    • Kwok-Shun Cheng
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    BLENDED POTTING RESINS AND USE THEREOF
    • Publication number 20180200676
    • Publication date Jul 19, 2018
    • Entergris, Inc.
    • Ganapathysubramanian Iyer
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Exchange apparatus
    • Publication number 20080135219
    • Publication date Jun 12, 2008
    • Cha P. Doh
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Potted exchange devices and methods of making
    • Publication number 20070144716
    • Publication date Jun 28, 2007
    • Cha P. Doh
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Exchange apparatus
    • Publication number 20040251010
    • Publication date Dec 16, 2004
    • Cha P Doh
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Method for manufacturing hollow fiber membranes
    • Publication number 20040094466
    • Publication date May 20, 2004
    • Kwok-Shun Cheng
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Hollow fiber membrane contactor
    • Publication number 20030192428
    • Publication date Oct 16, 2003
    • Mykrolis Corporation
    • Kowk-Shun Cheng
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL