- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 25
10-year publication summary
0
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2
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0
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0
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1
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2
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1
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4
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6
|
2
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Saudi Arabian Oil Company | 11322 |
5 |
BlueScope Steel Limited | 223 |
2 |
China Petroleum & Chemical Corporation | 1623 |
2 |
King Fahd University of Petroleum & Minerals | 147 |
2 |
NOK Corporation | 2108 |
2 |
Shanghai Research Institute of Petrochemical Technology Sinopec | 252 |
2 |
Toyota Motor Corporation | 28582 |
1 |
Kao Corporation | 4843 |
1 |
Akzo Nobel Chemicals International B.V. | 520 |
1 |
Aramco Services Company | 3504 |
1 |
Archer Daniels Midland Company | 1164 |
1 |
Clariant International Ltd. | 978 |
1 |
Ecolab USA Inc. | 5190 |
1 |
Guardian Chemicals Inc. | 17 |
1 |
Baker Hughes Oilfield Operations, LLC | 1885 |
1 |
China Research Institute of Daily Chemistry Co., Ltd | 3 |
1 |
Other owners | 0 |