TREA

Daoyun SONG

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  • Woodbury, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical camouflage filter
    • Patent number 11,953,709
    • Issue date Apr 9, 2024
    • 3M Innovative Properties Company
    • Guanglei Du
    • G02 - OPTICS
  • Information Patent Grant

    Optical camouflage filter
    • Patent number 11,204,456
    • Issue date Dec 21, 2021
    • 3M Innovative Properties Company
    • Guanglei Du
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL CONSTRUCTION
    • Publication number 20240168204
    • Publication date May 23, 2024
    • 3M Innovative Properties Company
    • Bert T. Chien
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    OPTICAL CAMOUFLAGE FILTER
    • Publication number 20220075107
    • Publication date Mar 10, 2022
    • 3M Innovative Properties Company
    • Guanglei DU
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL CAMOUFLAGE FILTER
    • Publication number 20190033502
    • Publication date Jan 31, 2019
    • 3M Innovative Properties Company
    • Guanglei DU
    • G02 - OPTICS