C07D 517/20
Spiro-condensed systems
C07D517/20 (Spiro-condensed systems) appears on 3 US grants and 4 published applications in this corpus.
Search patents in C07D- Granted patents
- 3
- Published applications
- 4
- Assignees
- 3
- Inventors
- 17
- Latest grant
- 20 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Organic light emitting diode having high efficiency20 Dec 2022US 11,532,792 B2Sfc Co., Ltd.
- Organic heterocyclic compound and light-emitting diode comprising same22 Mar 2022US 11,279,693 B2Sfc Co., Ltd.
- Polyheteroaromatic compound and organic electroluminescence device using the same14 Apr 2020US 10,622,566 B2
- Compounds comprising heteroaryl rings and compositions and methods thereof30 Jul 2026US 2026/0217697 A1lonGen Therapeutics Co., Ltd.
- Organic light emitting diode having high efficiency23 Apr 2020US 2020/0127209 A1Sfc Co., Ltd.
- Polyheteroaromatic compound and organic electroluminescence device using the same25 Apr 2019US 2019/0123284 A1Luminescence Technology Corporation
- Novel organic heterocyclic compound and lihght-emitting diode comprising same8 Nov 2018US 2018/0319776 A1Sfc Co., Ltd.
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.