Diester of bisphenol fluorene compounds and thermochromic pigment compositions comprising the same
US-11814528-B2 · Nov 14, 2023 · US
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Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings · 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 | C09B5/00 |
| Official title | Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings |
| Display label | Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2018 | 3 |
| 2021 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Diester of bisphenol fluorene compounds and thermochromic pigment compositions comprising the same
US-2021363371-A1 · Nov 25, 2021 · US
Condensed cyclic compound and organic light-emitting device comprising the same
US-10087145-B2 · Oct 2, 2018 · US
Photoelectric conversion element, and solar cell using the same
US-2018102222-A1 · Apr 12, 2018 · US
Heterocyclic compounds
US-9893299-B2 · Feb 13, 2018 · US
Heterocyclic compounds
US-2016226003-A1 · Aug 4, 2016 · US
Condensed cyclic compound and organic light-emitting device comprising the same
US-2015318490-A1 · Nov 5, 2015 · US