- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 309/49 - Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton the carbon skeleton being further substituted by singly-bound oxygen atoms
Patent holdings for IPC class C07C 309/49
Total number of patents in this class: 15
10-year publication summary
|
0
|
1
|
1
|
3
|
2
|
2
|
2
|
0
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China Petroleum & Chemical Corporation | 1908 |
2 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 266 |
2 |
| Provepharm Life Solutions | 63 |
2 |
| ALFA INSTRUMENTS S.r.l. | 9 |
2 |
| Henkel AG & Co. KGaA | 10574 |
1 |
| Alcon, Inc. | 324 |
1 |
| DONGWOO FINE-CHEM Co., Ltd. | 1334 |
1 |
| Nankai University | 234 |
1 |
| PetroChina Company Limited | 708 |
1 |
| Nflection Therapeutics, Inc. | 34 |
1 |
| Cmblu Energy AG | 52 |
1 |
| Other owners | 0 |