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William R. Maltman
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St. Helens, GB
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last 30 patents
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Patent Grant
Process for manufacturing photochromic articles
Patent number
4,851,471
Issue date
Jul 25, 1989
Pilkington Brothers P.L.C.
William R. Maltman
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent Grant
Photochromic compounds and their use in photoreactive lenses
Patent number
4,576,766
Issue date
Mar 18, 1986
The Plessey Company plc
Martin W. Baskerville
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...