- 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: 1412
10-year publication summary
|
84
|
84
|
107
|
117
|
112
|
127
|
98
|
88
|
116
|
65
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 20991 |
52 |
| Dow Global Technologies LLC | 10413 |
43 |
| Lotte Chemical Corporation | 731 |
38 |
| LG Chem, Ltd. | 17656 |
35 |
| Adeka Corporation | 1368 |
29 |
| Covestro Deutschland AG | 2768 |
29 |
| Mitsubishi Engineering-Plastics Corporation | 308 |
25 |
| SHPP Global Technologies B.V. | 1089 |
22 |
| Mitsui Chemicals, Inc. | 3238 |
20 |
| Sekisui Chemical Co., Ltd. | 3447 |
19 |
| Eastman Chemical Company | 2207 |
17 |
| Idemitsu Kosan Co., Ltd. | 4220 |
16 |
| Asahi Kasei Kabushiki Kaisha | 2686 |
14 |
| 3m Innovative Properties Company | 17781 |
13 |
| Toray Industries, Inc. | 6978 |
13 |
| Kaneka Corporation | 4577 |
13 |
| Teijin Limited | 1256 |
13 |
| NEC Corporation | 36003 |
12 |
| Mitsubishi Chemical Corporation | 4545 |
12 |
| PI Advanced Materials Co., Ltd. | 204 |
12 |
| Other owners | 965 |