Biscarbazole derivative and organic electroluminescent element using same
US-10147888-B2 · Dec 4, 2018 · US
Naphtho [b] pyrroles; Hydrogenated naphtho [b] pyrroles · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D209/60 |
| Official title | Naphtho [b] pyrroles; Hydrogenated naphtho [b] pyrroles |
| Display label | Naphtho [b] pyrroles; Hydrogenated naphtho [b] pyrroles |
| Total patents | 122 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 20 |
| 2017 | 12 |
| 2018 | 8 |
| 2019 | 13 |
| 2020 | 17 |
| 2021 | 6 |
| 2022 | 10 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-10147888-B2 · Dec 4, 2018 · US
US-10147889-B2 · Dec 4, 2018 · US
US-2018303797-A1 · Oct 25, 2018 · US
US-9989847-B2 · Jun 5, 2018 · US
US-9960359-B2 · May 1, 2018 · US
US-9957392-B2 · May 1, 2018 · US
US-2018002358-A1 · Jan 4, 2018 · US
US-2017354747-A1 · Dec 14, 2017 · US
US-2017335182-A1 · Nov 23, 2017 · US
US-9821062-B2 · Nov 21, 2017 · US
US-9815859-B2 · Nov 14, 2017 · US
US-2017313656-A1 · Nov 2, 2017 · US
US-9751868-B2 · Sep 5, 2017 · US
US-2017172992-A1 · Jun 22, 2017 · US
US-2017166575-A1 · Jun 15, 2017 · US
US-9630921-B2 · Apr 25, 2017 · US
US-9592307-B2 · Mar 14, 2017 · US
US-9551029-B2 · Jan 24, 2017 · US
US-2017008843-A1 · Jan 12, 2017 · US
US-2016361445-A1 · Dec 15, 2016 · US
Answers are generated from the same data shown on this page.