- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 303/36 - Preparation of esters or amides of sulfuric acidsPreparation of sulfonic acids or of their esters, halides, anhydrides or amides of amides of sulfonic acids
Patent holdings for IPC class C07C 303/36
Total number of patents in this class: 69
10-year publication summary
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6
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10
|
1
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2
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2
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3
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1
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8
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1
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5
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AMOREPACIFIC Corporation | 2834 |
4 |
| 3m Innovative Properties Company | 17819 |
3 |
| Central Glass Company, Limited | 1265 |
3 |
| Arxada AG | 165 |
3 |
| The Regents of the University of Michigan | 4701 |
2 |
| Rhodia Operations | 1586 |
2 |
| Sanford-Burnham Medical Research Institute | 126 |
2 |
| Tokyo Institute of Technology | 1374 |
2 |
| University of Kansas | 874 |
2 |
| Wayne State University | 685 |
2 |
| Daegu-gyeongbuk Medical Innovation Foundation | 108 |
2 |
| SES Holdings Pte. Ltd | 61 |
2 |
| Pimedbio, Inc. | 3 |
2 |
| Shanghai Ourchem Bio-technology Co., Ltd | 7 |
2 |
| F. Hoffmann-La Roche AG | 7920 |
1 |
| Hoffmann-La Roche Inc. | 3428 |
1 |
| Bayer Cropscience AG | 2035 |
1 |
| Amgen Inc. | 4049 |
1 |
| Massachusetts Institute of Technology | 10057 |
1 |
| Asahi Glass Company, Limited | 2781 |
1 |
| Other owners | 30 |