- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 23/18 - Quaternary ammonium compounds
Patent holdings for IPC class C09K 23/18
Total number of patents in this class: 48
10-year publication summary
|
0
|
0
|
1
|
1
|
1
|
7
|
6
|
10
|
3
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13681 |
10 |
| King Fahd University of Petroleum & Minerals | 191 |
5 |
| Kao Corporation | 5015 |
3 |
| BlueScope Steel Limited | 203 |
2 |
| China Petroleum & Chemical Corporation | 1964 |
2 |
| NOK Corporation | 2242 |
2 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 265 |
2 |
| Sphere Fluidics Limited | 69 |
2 |
| China Research Institute of Daily Chemistry Co., Ltd | 4 |
2 |
| BASF SE | 21101 |
1 |
| Toyota Motor Corporation | 33622 |
1 |
| Tsinghua University | 6042 |
1 |
| Advansix Resins & Chemicals LLC | 304 |
1 |
| Akzo Nobel Chemicals International B.V. | 433 |
1 |
| Archer Daniels Midland Company | 1127 |
1 |
| Ecolab USA Inc. | 5615 |
1 |
| GOJO Industries, Inc. | 885 |
1 |
| Miyoshi Oil & Fat Co., Ltd. | 103 |
1 |
| Ohio Soybean Council | 14 |
1 |
| PetroChina Company Limited | 733 |
1 |
| Other owners | 7 |