- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 1/22 - Sulfites of ammonium
Patent holdings for IPC class C01C 1/22
Total number of patents in this class: 18
10-year publication summary
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0
|
1
|
0
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0
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0
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7
|
1
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0
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2
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ThioSolv, LLC | 20 |
3 |
| Advansix Resins & Chemicals LLC | 294 |
2 |
| Andgar Corporation | 5 |
2 |
| DVO, Inc. | 16 |
2 |
| Washington State University | 474 |
2 |
| Clarke Rajchel Engineering, LLC | 3 |
2 |
| Evonik Degussa GmbH | 1555 |
1 |
| Uop LLC | 4199 |
1 |
| Stamicarbon B.V. | 279 |
1 |
| American River Nutrition, LLC | 23 |
1 |
| Arelac, Inc. | 105 |
1 |
| Other owners | 0 |