- 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: 395
10-year publication summary
|
22
|
15
|
20
|
20
|
22
|
36
|
26
|
48
|
45
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bechtel Energy Technologies & Solutions, Inc. | 77 |
11 |
| SABIC Global Technologies B.V. | 4488 |
10 |
| Mitsubishi Heavy Industries, Ltd. | 9023 |
7 |
| Sumitomo Seika Chemicals Co., Ltd. | 1052 |
7 |
| Kellogg Brown & Root LLC | 527 |
6 |
| Yuanchu Technology (Beijing) Co., Ltd. | 24 |
6 |
| Topsoe A/S | 1007 |
6 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
5 |
| Anaergia Inc. | 106 |
5 |
| Amminex A/S | 16 |
5 |
| Siemens AG | 24199 |
4 |
| Casale SA | 628 |
4 |
| Gas Technology Institute | 336 |
4 |
| ThyssenKrupp AG | 3454 |
4 |
| Sure Champion Investment Limited | 50 |
4 |
| Universidade Estadual de Campinas—unicamp | 4 |
4 |
| The Boeing Company | 20094 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4053 |
3 |
| NuScale Power, LLC | 297 |
3 |
| Research Institute of Industrial Science & Technology | 520 |
3 |
| Other owners | 291 |