- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 1/242 - Preparation from ammonia and sulfuric acid or sulfur trioxide
Patent holdings for IPC class C01C 1/242
Total number of patents in this class: 55
10-year publication summary
|
5
|
2
|
4
|
3
|
3
|
3
|
2
|
7
|
9
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 812 |
6 |
| Celanese International Corporation | 918 |
5 |
| Nutrinova Netherlands B.V. | 24 |
4 |
| Uop LLC | 4191 |
3 |
| PCI Nitrogen, LLC | 4 |
3 |
| Saipem S.p.A. | 512 |
3 |
| Cap III B.V. | 56 |
2 |
| Earth Science Laboratories, Inc. | 19 |
2 |
| The United States of America, as represented by the Secretary of Agriculture | 1087 |
2 |
| Earth Science Laboratories | 10 |
2 |
| Peregrine Hydrogen Inc. | 7 |
2 |
| LG Chem, Ltd. | 17464 |
1 |
| Airpack Holding B.V. | 2 |
1 |
| Anaergia Inc. | 108 |
1 |
| General Electric Technology GmbH | 1487 |
1 |
| Holcim Technology Ltd. | 948 |
1 |
| ICL Europe Cooperatief U.A. | 104 |
1 |
| Katholieke Universiteit Leuven | 1148 |
1 |
| Marsulex Environmental Technologies Corporation | 25 |
1 |
| Ohio State Innovation Foundation | 2048 |
1 |
| Other owners | 12 |