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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Maltman; William R.
Address:
St. Helens, GB2
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
4851471 Process for manufacturing photochromic articles July 25, 1989
A direct casting process for manufacturing a shaped synthetic plastic article, such as an ophthalmic lens, which has photochromic properties, the process comprising incorporating a photochromic spiro-oxazine compound into a mixture comprising a highly reactive polyfunctional monomer and
4576766 Photochromic compounds and their use in photoreactive lenses March 18, 1986
A method is disclosed for manufacturing transparent plastic articles, primarily plano or opthalmic photoreactive lenses, which comprises incorporating fulgides or fulgimides containing an adamantylidene group in plastics casting or moulding compositions or preformed plastics articles










 
 
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