- 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: 465
10-year publication summary
|
42
|
33
|
31
|
34
|
40
|
31
|
27
|
34
|
41
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stamicarbon B.V. | 315 |
144 |
| Casale SA | 627 |
79 |
| Toyo Engineering Corporation | 151 |
33 |
| Saipem S.p.A. | 518 |
26 |
| Yara International ASA | 881 |
21 |
| ThyssenKrupp AG | 3464 |
13 |
| Urea Casale S.A. | 33 |
10 |
| Topsoe A/S | 1012 |
10 |
| Stamicarbon B.V. Acting under The Name of MT Innovation Center | 54 |
8 |
| Johnson Matthey Davy Technologies Limited | 500 |
7 |
| Johnson Matthey Public Limited Company | 1754 |
7 |
| ThyssenKrupp Uhde GmbH | 376 |
6 |
| ThyssenKrupp Industrial Solutions AG | 630 |
5 |
| Bayotech, Inc. | 69 |
5 |
| Haldor Topsøe A/S | 637 |
5 |
| Otkrytoe Aktsionernoe Obschestvo Research & Design Institute of Urea and Organic Synthesis Products (oao Niik) | 18 |
5 |
| Wuhuan Engineering Co., Ltd. | 13 |
5 |
| Expander Energy Inc. | 56 |
4 |
| Saudi Arabian Oil Company | 13948 |
4 |
| Otkrytoe Aktsionernoe Obshchestvo «krasnoiarskii Zavod Tsvetnykh Metallov Imeni V.N. Gulidova», OAO «krastsvetmet» | 13 |
4 |
| Other owners | 64 |