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Laser eye protective devices
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Patent number 5,116,113
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Issue date May 26, 1992
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American Optical Corporation
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Nori Y. C. Chu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Stabilized photochromic materials
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Patent number 4,367,170
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Issue date Jan 4, 1983
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American Optical Corporation
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Donald R. Uhlmann
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Photochromic compounds
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Patent number 4,342,668
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Issue date Aug 3, 1982
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American Optical Corporation
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Richard J. Hovey
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C07 - ORGANIC CHEMISTRY
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Photochromic compounds
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Patent number 4,215,010
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Issue date Jul 29, 1980
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American Optical Corporation
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Richard J. Hovey
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C07 - ORGANIC CHEMISTRY
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Stabilized photochromic materials
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Patent number 4,166,043
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Issue date Aug 28, 1979
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American Optical Corporation
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Donald R. Uhlmann
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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