Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1989-06-20
1990-12-04
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
264 11, 351160H, 523106, 524558, 526316, C02C 704, C08F 1224, C08F 1612, C08F21612
Patent
active
RE0334774
ABSTRACT:
This invention relates to ultraviolet absorbing lenses, particularly corneal contact lenses, comprising a polymeric shaped body having an ultraviolet absorber dispersed substantially uniformly throughout said body and being in a steady state with respect to extraction thereof from said body by an aqueous medium, and to the method of making such lenses.
REFERENCES:
patent: 3171869 (1965-03-01), Weinberg
patent: 3173893 (1965-03-01), Fertig et al.
patent: 4304895 (1981-12-01), Loshaek
patent: 4390676 (1983-06-01), Loshaek
UVC Brochure (Guaranteed Plastic Lenses), undated document.
Fertig Article (Journal of Applied Polymer Science), vol. 10, pp. 663-672.
Anderson Harold D.
Wesley-Jessen Inc.
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