- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 303/02 - Preparation of esters or amides of sulfuric acidsPreparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
Patent holdings for IPC class C07C 303/02
Total number of patents in this class: 180
10-year publication summary
|
14
|
11
|
17
|
10
|
19
|
12
|
11
|
10
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vitaworks IP, LLC | 55 |
35 |
| Mylan Institutional LLC | 8 |
7 |
| Mitsubishi Materials Corporation | 2406 |
6 |
| Mitsubishi Materials Electronic Chemicals Co., Ltd. | 129 |
6 |
| Archer Daniels Midland Company | 1136 |
5 |
| Central Glass Company, Limited | 1246 |
5 |
| Qianjiang Yongan Pharmaceutical Co., Ltd | 10 |
5 |
| S.p.c.m. SA | 288 |
5 |
| Asahi Glass Company, Limited | 2882 |
4 |
| Rhodia Operations | 1589 |
4 |
| The Procter & Gamble Company | 22146 |
3 |
| Halliburton Energy Services, Inc. | 20438 |
3 |
| BASF SE | 20432 |
2 |
| Board of Regents, The University of Texas System | 5619 |
2 |
| Council of Scientific & Industrial Research | 1409 |
2 |
| Eras-labo | 6 |
2 |
| Hunan ASTAR Bio-chemical Technology Co., Ltd. | 2 |
2 |
| Institut National Polytechnique de Grenoble | 35 |
2 |
| Quantum Genomics | 20 |
2 |
| Solvay Specialty Polymers USA, LLC | 559 |
2 |
| Other owners | 76 |