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Protective coating for images
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Patent number 4,719,169
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Issue date Jan 12, 1988
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Hoechst Celanese Corporation
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Stephan J. W. Platzer
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Electrochemically treated metal plates
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Patent number 4,448,647
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Issue date May 15, 1984
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American Hoechst Corporation
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Thomas N. Gillich
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Electrochemically treated metal plates
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Patent number 4,383,897
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Issue date May 17, 1983
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American Hoechst Corporation
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Thomas N. Gillich
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Light sensitive film composition
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Patent number 4,157,918
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Issue date Jun 12, 1979
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American Hoechst Corporation
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Stanley F. Wanat
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY