- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 1/04 - Preparation of ammonia by synthesis
Patent holdings for IPC class C01C 1/04
Total number of patents in this class: 1318
10-year publication summary
|
60
|
74
|
78
|
70
|
80
|
86
|
115
|
140
|
156
|
35
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 631 |
123 |
| Topsoe A/S | 992 |
85 |
| ThyssenKrupp AG | 3448 |
70 |
| ThyssenKrupp Uhde GmbH | 368 |
38 |
| Japan Science and Technology Agency | 1243 |
37 |
| Tokyo Institute of Technology | 1336 |
36 |
| ThyssenKrupp Industrial Solutions AG | 631 |
34 |
| Haldor Topsøe A/S | 639 |
34 |
| Kellogg Brown & Root LLC | 520 |
26 |
| Yara International ASA | 880 |
22 |
| The University of Tokyo | 4304 |
18 |
| Linde GmbH | 1333 |
17 |
| SABIC Global Technologies B.V. | 4471 |
15 |
| Stamicarbon B.V. | 311 |
15 |
| Tsubame Bhb Co., Ltd. | 14 |
14 |
| Johnson Matthey Davy Technologies Limited | 487 |
13 |
| Starfire Energy | 25 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 9002 |
12 |
| Saudi Arabian Oil Company | 13931 |
12 |
| Idemitsu Kosan Co., Ltd. | 4225 |
11 |
| Other owners | 673 |