C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 9/00 (2006.01) G02B 5/23 (2006.01) G02C 7/10 (2006.01) G03C 1/725 (2006.01)
Patent
CA 2165882
A photochromic particulate material comprises microcrystalline silver halide having an average particle diameter ranging from about 50 to about 300 .ANG., an inorganic oxide layer coating the microcrystalline silver halide, and an organic substance layer coating at least a part of the inorganic oxide layer.
Marks & Clerk
Nikon Corporation
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