- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/80 - Phosgene
Patent holdings for IPC class C01B 32/80
Total number of patents in this class: 74
10-year publication summary
|
3
|
5
|
4
|
6
|
9
|
16
|
8
|
12
|
5
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21147 |
23 |
| Covestro Deutschland AG | 2798 |
19 |
| National University Corporation Kobe University | 548 |
6 |
| Wanhua Chemical Group Co., Ltd. | 366 |
6 |
| Mitsubishi Gas Chemical Company, Inc. | 3577 |
4 |
| Wanhua Chemical (Ningbo) Co., Ltd. | 81 |
4 |
| Covestro Intellectual Property GmbH & Co. KG | 277 |
3 |
| SABIC Global Technologies B.V. | 4472 |
2 |
| Agc, Inc. | 5253 |
2 |
| Topsoe A/S | 993 |
2 |
| Siemens AG | 24250 |
1 |
| Kaneka Corporation | 4630 |
1 |
| Lyten, Inc. | 337 |
1 |
| Other owners | 0 |