One-way circularly polarized light generated by propagation through Ch-GLC films doped with light-absorbing dyes
US-12461297-B2 · Nov 4, 2025 · US
the acyl groups being residues of an aromatic carboxylic acid · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09B1/42 |
| Official title | the acyl groups being residues of an aromatic carboxylic acid |
| Display label | the acyl groups being residues of an aromatic carboxylic acid |
| Total patents | 4 |
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12461297-B2 · Nov 4, 2025 · US
US-2022268982-A1 · Aug 25, 2022 · US
US-2017153496-A1 · Jun 1, 2017 · US
US-9200171-B2 · Dec 1, 2015 · US