- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
Patent holdings for IPC class C08K 5/526
Total number of patents in this class: 392
10-year publication summary
|
18
|
27
|
34
|
34
|
29
|
38
|
29
|
22
|
29
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21039 |
43 |
| Kingfa SCI & Tech Co. Ltd. | 648 |
30 |
| SABIC Global Technologies B.V. | 4374 |
27 |
| Idemitsu Kosan Co., Ltd. | 4239 |
14 |
| Sumitomo Chemical Company, Limited | 9086 |
12 |
| Chemtura Corporation | 151 |
11 |
| Borealis AG | 2769 |
8 |
| SHPP Global Technologies B.V. | 1088 |
8 |
| Eastman Chemical Company | 2208 |
6 |
| NOVA Chemicals (International) S.A. | 778 |
6 |
| Covestro Deutschland AG | 2774 |
5 |
| Cytec Industries Inc. | 405 |
5 |
| Mitsubishi Engineering-Plastics Corporation | 309 |
5 |
| SI Group, Inc. | 185 |
5 |
| Clariant Plastics & Coatings Ltd | 83 |
5 |
| SI Group Switzerland (CHAA) GmbH | 21 |
5 |
| LG Chem, Ltd. | 17680 |
4 |
| Sabic Innovative Plastics IP B.V. | 681 |
4 |
| Arkema France | 4170 |
4 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 294 |
4 |
| Other owners | 181 |