- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 32/80 - Phosgene
Patent holdings for IPC class C01B 32/80
Total number of patents in this class: 63
10-year publication summary
|
1
|
0
|
3
|
5
|
4
|
6
|
9
|
16
|
8
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 19740 |
17 |
| Covestro Deutschland AG | 2429 |
17 |
| Wanhua Chemical Group Co., Ltd. | 286 |
5 |
| National University Corporation Kobe University | 460 |
4 |
| Wanhua Chemical (Ningbo) Co., Ltd. | 76 |
4 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
3 |
| Agc, Inc. | 4029 |
3 |
| Covestro Intellectual Property GmbH & Co. KG | 501 |
3 |
| SABIC Global Technologies B.V. | 4044 |
2 |
| Topsoe A/S | 732 |
2 |
| Siemens AG | 24990 |
1 |
| Kaneka Corporation | 4445 |
1 |
| Lyten, Inc. | 238 |
1 |
| Other owners | 0 |