- 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: 1362
10-year publication summary
|
69
|
91
|
93
|
77
|
87
|
103
|
138
|
159
|
168
|
73
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 634 |
122 |
| Topsoe A/S | 1030 |
88 |
| ThyssenKrupp AG | 3466 |
72 |
| ThyssenKrupp Uhde GmbH | 377 |
40 |
| Japan Science and Technology Agency | 1218 |
38 |
| Tokyo Institute of Technology | 1316 |
36 |
| ThyssenKrupp Industrial Solutions AG | 630 |
34 |
| Haldor Topsøe A/S | 637 |
34 |
| Kellogg Brown & Root LLC | 527 |
26 |
| Yara International ASA | 891 |
22 |
| The University of Tokyo | 4354 |
18 |
| Linde GmbH | 1353 |
18 |
| SABIC Global Technologies B.V. | 4552 |
16 |
| Stamicarbon B.V. | 317 |
15 |
| Nuovo Pignone Tecnologie S.r.l. | 1192 |
15 |
| Tsubame Bhb Co., Ltd. | 14 |
14 |
| Johnson Matthey Davy Technologies Limited | 509 |
13 |
| Starfire Energy | 25 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 9071 |
12 |
| Idemitsu Kosan Co., Ltd. | 4218 |
12 |
| Other owners | 704 |