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Photochromic compounds
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Patent number 10,532,997
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Issue date Jan 14, 2020
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Transitions Optical, Inc.
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Meng He
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C07 - ORGANIC CHEMISTRY
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Photochromic compounds
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Patent number 10,532,998
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Issue date Jan 14, 2020
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Transitions Optical, Inc.
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Meng He
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C07 - ORGANIC CHEMISTRY
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Photochromic compounds
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Patent number 10,501,446
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Issue date Dec 10, 2019
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Transitions Optical, Inc.
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Meng He
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Photochromic compounds
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Patent number 10,005,763
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Issue date Jun 26, 2018
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Transitions Optical, Inc.
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Meng He
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Photochromic compounds
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Patent number 10,000,472
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Issue date Jun 19, 2018
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Transitions Optical, Inc.
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Meng He
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Photochromic compounds
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Patent number 8,705,160
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Issue date Apr 22, 2014
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Transitions Optical, Inc.
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Meng He
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C07 - ORGANIC CHEMISTRY