- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 31/28 - Phosgene
Patent holdings for IPC class C01B 31/28
Total number of patents in this class: 37
10-year publication summary
|
6
|
9
|
4
|
0
|
0
|
1
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 19740 |
8 |
| Bayer MaterialScience AG | 874 |
4 |
| Covestro Deutschland AG | 2429 |
4 |
| SABIC Global Technologies B.V. | 4044 |
4 |
| Bayer AG | 3045 |
2 |
| Warsaw Orthopedic, Inc. | 3184 |
2 |
| Huntsman International LLC | 708 |
2 |
| BASF AG | 1258 |
1 |
| Sumitomo Chemical Company, Limited | 8808 |
1 |
| Adámas Nanotechnologies Inc. | 9 |
1 |
| AET Group | 3 |
1 |
| Akzo Nobel Chemicals International B.V. | 520 |
1 |
| Bayer Technology Services GmbH | 199 |
1 |
| The City University of New York | 47 |
1 |
| Diamond Innovations, Inc. | 241 |
1 |
| Teijin Chemicals Ltd. | 112 |
1 |
| Wanhua Chemical (Ningbo) Co., Ltd. | 76 |
1 |
| Haldor Topsøe A/S | 698 |
1 |
| Other owners | 0 |