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for silver-halide free photochromic glass

for silver-halide free photochromic glass · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC03C4/065
Official title{for silver-halide free photochromic glass}
Display labelfor silver-halide free photochromic glass
Total patents13

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20172
20181
20191
20203
20222
20232
20251
20261

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.