- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 303/30 - Preparation of esters or amides of sulfuric acidsPreparation of sulfonic acids or of their esters, halides, anhydrides or amides of esters of sulfonic acids by reactions not involving the formation of esterified sulfo groups
Patent holdings for IPC class C07C 303/30
Total number of patents in this class: 66
10-year publication summary
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7
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6
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6
|
6
|
3
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1
|
3
|
4
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4
|
1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Healthcare Limited | 673 |
4 |
| Lantheus Medical Imaging, Inc. | 175 |
4 |
| Sanko Co., Ltd. | 53 |
4 |
| Sumitomo Chemical Company, Limited | 9047 |
2 |
| William Marsh Rice University | 1009 |
2 |
| Nevada Research & Innovation Corporation | 46 |
2 |
| Beijing Honghui Meditech Co., Ltd | 9 |
2 |
| The Procter & Gamble Company | 22043 |
1 |
| 3m Innovative Properties Company | 17819 |
1 |
| Merck Patent GmbH | 5823 |
1 |
| California Institute of Technology | 3972 |
1 |
| JPMorgan Chase Bank, National Association | 8573 |
1 |
| Board of Supervisors of Louisiana State University and Agricultural and Mechanical College | 825 |
1 |
| Central Glass Company, Limited | 1267 |
1 |
| Council of Scientific and Industrial Research | 605 |
1 |
| Council of Scientific & Industrial Research | 1425 |
1 |
| Creative Therapeutics GmbH | 5 |
1 |
| Daicel Chemical Industries, Ltd. | 227 |
1 |
| Daicel Corporation | 2348 |
1 |
| Divi's Laboratories, Ltd. | 26 |
1 |
| Other owners | 33 |