| http://www.w3.org/ns/prov#value | - Kobayakawa, et al.) (a) is directed to forming a lens having photochromic compound dispersed throughout, (b) requires the presence of multiple types of photochromic compounds in combination, (c) requires the use of a polymerizable compound having at least one epoxy group to form the lens, (d) requires polymerization in a heat furnace, with polymerization taking from 2 to 40 hours, and (e) reports
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