- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 311/48 - Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups having nitrogen atoms of sulfonamide groups further bound to another hetero atom
Patent holdings for IPC class C07C 311/48
Total number of patents in this class: 305
10-year publication summary
|
31
|
21
|
27
|
15
|
12
|
16
|
11
|
15
|
18
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29228 |
26 |
| The Johns Hopkins University | 5642 |
17 |
| Cardioxyl Pharmaceuticals, Inc. | 49 |
15 |
| Nippon Soda Co., Ltd. | 891 |
11 |
| Hydro-Quebec | 644 |
8 |
| Mitsubishi Materials Electronic Chemicals Co., Ltd. | 131 |
7 |
| Blue Solutions Canada Inc. | 58 |
7 |
| Central Glass Company, Limited | 1264 |
6 |
| Mitsubishi Materials Corporation | 2431 |
6 |
| The University of Tokyo | 4148 |
6 |
| Massachusetts Institute of Technology | 10013 |
5 |
| Arkema France | 3987 |
5 |
| Dexerials Corporation | 1952 |
5 |
| Rhodia Operations | 1582 |
5 |
| Samsung Electronics Co., Ltd. | 144143 |
4 |
| LG Chem, Ltd. | 17561 |
4 |
| Canon Inc. | 39442 |
4 |
| Alkermes Pharma Ireland Limited | 271 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1538 |
4 |
| Agc, Inc. | 4744 |
4 |
| Other owners | 152 |