- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 273/04 - Preparation of urea or its derivatives, i.e. compounds containing any of the groups the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
Patent holdings for IPC class C07C 273/04
Total number of patents in this class: 427
10-year publication summary
|
29
|
42
|
33
|
31
|
34
|
40
|
30
|
25
|
32
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stamicarbon B.V. | 294 |
134 |
| Casale SA | 609 |
74 |
| Toyo Engineering Corporation | 147 |
33 |
| Saipem S.p.A. | 515 |
26 |
| Yara International ASA | 855 |
19 |
| Johnson Matthey Public Limited Company | 1850 |
12 |
| ThyssenKrupp AG | 3283 |
11 |
| Urea Casale S.A. | 35 |
11 |
| Topsoe A/S | 891 |
10 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
8 |
| ThyssenKrupp Industrial Solutions AG | 631 |
5 |
| Bayotech, Inc. | 78 |
5 |
| Haldor Topsøe A/S | 659 |
5 |
| Otkrytoe Aktsionernoe Obschestvo Research & Design Institute of Urea and Organic Synthesis Products (oao Niik) | 18 |
5 |
| Expander Energy Inc. | 55 |
4 |
| ThyssenKrupp Uhde GmbH | 331 |
4 |
| Kellogg Brown & Root LLC | 517 |
3 |
| Linde Aktiengesellschaft | 1506 |
3 |
| Saudi Arabian Oil Company | 13155 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 31375 |
2 |
| Other owners | 50 |