- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
Patent holdings for IPC class C08K 5/521
Total number of patents in this class: 1350
10-year publication summary
|
87
|
89
|
111
|
117
|
116
|
127
|
105
|
86
|
117
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 20432 |
50 |
| Dow Global Technologies LLC | 10156 |
41 |
| Lotte Chemical Corporation | 664 |
36 |
| LG Chem, Ltd. | 17639 |
31 |
| Adeka Corporation | 1342 |
29 |
| Mitsubishi Engineering-Plastics Corporation | 309 |
25 |
| Covestro Deutschland AG | 2692 |
24 |
| SHPP Global Technologies B.V. | 1059 |
23 |
| Mitsui Chemicals, Inc. | 3187 |
20 |
| Sekisui Chemical Co., Ltd. | 3308 |
19 |
| Eastman Chemical Company | 2258 |
17 |
| Idemitsu Kosan Co., Ltd. | 4103 |
15 |
| 3m Innovative Properties Company | 17957 |
13 |
| Kaneka Corporation | 4498 |
13 |
| Asahi Kasei Kabushiki Kaisha | 2556 |
13 |
| Toray Industries, Inc. | 6855 |
12 |
| Mitsubishi Chemical Corporation | 4447 |
12 |
| Teijin Limited | 1233 |
12 |
| NEC Corporation | 34413 |
11 |
| Sumitomo Electric Industries, Ltd. | 14972 |
11 |
| Other owners | 923 |