- 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: 1297
10-year publication summary
|
60
|
74
|
78
|
70
|
80
|
86
|
115
|
140
|
156
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 639 |
123 |
| Topsoe A/S | 982 |
83 |
| ThyssenKrupp AG | 3388 |
69 |
| Japan Science and Technology Agency | 1265 |
37 |
| ThyssenKrupp Uhde GmbH | 358 |
37 |
| Tokyo Institute of Technology | 1346 |
36 |
| ThyssenKrupp Industrial Solutions AG | 632 |
34 |
| Haldor Topsøe A/S | 641 |
34 |
| Kellogg Brown & Root LLC | 521 |
27 |
| Yara International ASA | 874 |
21 |
| The University of Tokyo | 4285 |
18 |
| Linde GmbH | 1312 |
17 |
| SABIC Global Technologies B.V. | 4448 |
15 |
| Stamicarbon B.V. | 306 |
14 |
| Tsubame Bhb Co., Ltd. | 14 |
14 |
| Johnson Matthey Davy Technologies Limited | 464 |
13 |
| Saudi Arabian Oil Company | 13814 |
13 |
| Starfire Energy | 25 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 8951 |
12 |
| Idemitsu Kosan Co., Ltd. | 4232 |
11 |
| Other owners | 656 |