- All sections
- C - Chemistry; metallurgy
- 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: 1296
10-year publication summary
|
96
|
87
|
89
|
111
|
117
|
115
|
125
|
105
|
85
|
42
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 19740 |
49 |
| Dow Global Technologies LLC | 10147 |
42 |
| Lotte Chemical Corporation | 591 |
31 |
| LG Chem, Ltd. | 17205 |
29 |
| Adeka Corporation | 1333 |
28 |
| Mitsubishi Engineering-Plastics Corporation | 311 |
26 |
| Covestro Deutschland AG | 2429 |
22 |
| Mitsui Chemicals, Inc. | 3134 |
19 |
| SHPP Global Technologies B.V. | 1045 |
19 |
| Eastman Chemical Company | 2239 |
17 |
| Sekisui Chemical Co., Ltd. | 3159 |
17 |
| Idemitsu Kosan Co., Ltd. | 3995 |
15 |
| 3m Innovative Properties Company | 18406 |
13 |
| Mitsubishi Chemical Corporation | 4313 |
13 |
| Kaneka Corporation | 4445 |
13 |
| FUJIFILM Corporation | 27102 |
12 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
12 |
| Sumitomo Electric Industries, Ltd. | 14131 |
11 |
| Toray Industries, Inc. | 6652 |
11 |
| Teijin Limited | 1216 |
11 |
| Other owners | 886 |