- All sections
- C - Chemistry; metallurgy
- 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: 288
10-year publication summary
|
32
|
31
|
21
|
27
|
15
|
12
|
16
|
11
|
13
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
25 |
| The Johns Hopkins University | 5377 |
17 |
| Cardioxyl Pharmaceuticals, Inc. | 49 |
15 |
| Nippon Soda Co., Ltd. | 890 |
11 |
| Mitsubishi Materials Electronic Chemicals Co., Ltd. | 119 |
7 |
| Central Glass Company, Limited | 1244 |
6 |
| Hydro-Quebec | 637 |
6 |
| Mitsubishi Materials Corporation | 2378 |
6 |
| The University of Tokyo | 3903 |
6 |
| Arkema France | 3790 |
5 |
| Dexerials Corporation | 1826 |
5 |
| Rhodia Operations | 1645 |
5 |
| LG Chem, Ltd. | 17205 |
4 |
| Canon Inc. | 36841 |
4 |
| Massachusetts Institute of Technology | 9795 |
4 |
| Alkermes Pharma Ireland Limited | 307 |
4 |
| Capacitor Sciences Incorporated | 65 |
4 |
| Daicel Corporation | 2128 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
4 |
| Blue Solutions Canada Inc. | 53 |
4 |
| Other owners | 142 |