- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 303/26 - Preparation of esters or amides of sulfuric acidsPreparation of sulfonic acids or of their esters, halides, anhydrides or amides of esters of sulfonic acids
Patent holdings for IPC class C07C 303/26
Total number of patents in this class: 43
10-year publication summary
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2
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2
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3
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2
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4
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1
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1
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3
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0
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4
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17450 |
3 |
| Uop LLC | 4401 |
2 |
| Chevron Oronite Company LLC | 606 |
2 |
| Galaxy Surfactants Ltd. | 49 |
2 |
| Instituto Mexicano Del Petroleo | 201 |
2 |
| The Trustees of Boston College | 204 |
2 |
| Bayer Cropscience AG | 1821 |
1 |
| FUJIFILM Corporation | 30774 |
1 |
| Massachusetts Institute of Technology | 10313 |
1 |
| Sumitomo Chemical Company, Limited | 8989 |
1 |
| Shin-Etsu Chemical Co., Ltd. | 6148 |
1 |
| Daikin Industries, Ltd. | 10527 |
1 |
| ExxonMobil Chemical Patents Inc. | 3759 |
1 |
| DSM IP Assets B.V. | 5395 |
1 |
| Empire Technology Development LLC | 1611 |
1 |
| Boe Technology Group Co., Ltd. | 44784 |
1 |
| Advenchen Pharmaceuticals, LLC | 24 |
1 |
| Asahi Kasei Kabushiki Kaisha | 2871 |
1 |
| Astech. Co., Ltd. | 15 |
1 |
| BELLUS Health Inc. | 10 |
1 |
| Other owners | 16 |