- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 1/02 - Preparation or separation of ammonia
Patent holdings for IPC class C01C 1/02
Total number of patents in this class: 350
10-year publication summary
|
11
|
22
|
15
|
20
|
20
|
22
|
35
|
26
|
43
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SABIC Global Technologies B.V. | 4279 |
9 |
| Sumitomo Seika Chemicals Co., Ltd. | 1030 |
7 |
| Bechtel Energy Technologies & Solutions, Inc. | 68 |
7 |
| Mitsubishi Heavy Industries, Ltd. | 8641 |
6 |
| Kellogg Brown & Root LLC | 519 |
6 |
| Yuanchu Technology (Beijing) Co., Ltd. | 18 |
6 |
| Topsoe A/S | 874 |
6 |
| Anaergia Inc. | 108 |
5 |
| Amminex A/S | 18 |
5 |
| Siemens AG | 24568 |
4 |
| National Institute of Advanced Industrial Science and Technology | 3784 |
4 |
| Casale SA | 604 |
4 |
| Gas Technology Institute | 354 |
4 |
| ThyssenKrupp AG | 3262 |
4 |
| Sure Champion Investment Limited | 50 |
4 |
| Universidade Estadual de Campinas—unicamp | 4 |
4 |
| The Boeing Company | 19994 |
3 |
| Taiyo Nippon Sanso Corporation | 365 |
3 |
| ThyssenKrupp Industrial Solutions AG | 636 |
3 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 196 |
3 |
| Other owners | 253 |