- 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: 1439
10-year publication summary
|
84
|
107
|
117
|
113
|
127
|
99
|
89
|
116
|
85
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21129 |
53 |
| Dow Global Technologies LLC | 10762 |
45 |
| Lotte Chemical Corporation | 747 |
40 |
| LG Chem, Ltd. | 17813 |
36 |
| Adeka Corporation | 1367 |
30 |
| Covestro Deutschland AG | 2797 |
29 |
| Mitsubishi Engineering-Plastics Corporation | 301 |
24 |
| SHPP Global Technologies B.V. | 1092 |
22 |
| Mitsui Chemicals, Inc. | 3215 |
19 |
| Sekisui Chemical Co., Ltd. | 3581 |
19 |
| Idemitsu Kosan Co., Ltd. | 4225 |
16 |
| Asahi Kasei Kabushiki Kaisha | 2781 |
14 |
| 3m Innovative Properties Company | 17511 |
13 |
| NEC Corporation | 36611 |
13 |
| Toray Industries, Inc. | 7036 |
13 |
| Kaneka Corporation | 4642 |
13 |
| Teijin Limited | 1265 |
13 |
| Sumitomo Electric Industries, Ltd. | 16071 |
12 |
| Mitsubishi Chemical Corporation | 4682 |
12 |
| Kingfa SCI & Tech Co. Ltd. | 666 |
12 |
| Other owners | 991 |