Coloring composition, cured film, pattern forming method, color filter, solid-state imaging element, and image display device
US-11390752-B2 · Jul 19, 2022 · US
This page is not indexed by search engines while we improve data quality.
Sulfonic acid derivatives, e.g. sulfonic acid amides or sulfonic acid esters
Sulfonic acid derivatives, e.g. sulfonic acid amides or sulfonic acid esters · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09B68/441 |
| Official title | {Sulfonic acid derivatives, e.g. sulfonic acid amides or sulfonic acid esters} |
| Display label | Sulfonic acid derivatives, e.g. sulfonic acid amides or sulfonic acid esters |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2020 | 1 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.