- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 1/28 - Methods of preparing ammonium salts in general
Patent holdings for IPC class C01C 1/28
Total number of patents in this class: 37
10-year publication summary
|
2
|
3
|
1
|
2
|
2
|
4
|
4
|
8
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The United States of America, as represented by the Secretary of Agriculture | 1156 |
3 |
| Halliburton Energy Services, Inc. | 21320 |
2 |
| Nijhuis Water Technology B.V. | 13 |
2 |
| California Safe Soil, LLC | 25 |
2 |
| Samsung Electronics Co., Ltd. | 157946 |
1 |
| Centre National de La Recherche Scientifique | 11026 |
1 |
| Ajinomoto Co., Inc. | 2281 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3794 |
1 |
| AMI Agrolinz Melamine International GmbH | 5 |
1 |
| Convex B.V. | 6 |
1 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 837 |
1 |
| Evoqua Water Technologies LLC | 930 |
1 |
| JGC Catalysts and Chemicals Ltd. | 259 |
1 |
| SABIC Global Technologies B.V. | 4599 |
1 |
| Smart Salt Inc | 5 |
1 |
| ThioSolv, LLC | 23 |
1 |
| Tokyo Institute of Technology | 1312 |
1 |
| Toyo Engineering Corporation | 154 |
1 |
| West Virginia University Board of Governors on Behalf of West Virginia University | 182 |
1 |
| Zhejiang Huahai Pharmaceutical Co., Ltd. | 219 |
1 |
| Other owners | 12 |