- All sections
- C - Chemistry; metallurgy
- C08L - Compositions of macromolecular compounds
- C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
Patent holdings for IPC class C08L 67/04
Total number of patents in this class: 3049
10-year publication summary
|
223
|
200
|
160
|
193
|
203
|
218
|
222
|
261
|
267
|
79
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kaneka Corporation | 4445 |
102 |
| Toray Industries, Inc. | 6652 |
55 |
| Novamont S.p.A. | 354 |
54 |
| LG Chem, Ltd. | 17205 |
53 |
| Kureha Corporation | 1026 |
51 |
| BASF SE | 19740 |
43 |
| Teijin Limited | 1216 |
42 |
| Sumitomo Chemical Company, Limited | 8808 |
37 |
| Kao Corporation | 4843 |
34 |
| CJ Cheiljedang Corporation | 2964 |
33 |
| Ethicon, Inc. | 1310 |
31 |
| SK Chemicals Co., Ltd. | 568 |
31 |
| Kimberly-clark Worldwide, Inc. | 5854 |
30 |
| Mitsui Chemicals, Inc. | 3134 |
29 |
| Kingfa SCI & Tech Co. Ltd. | 509 |
29 |
| 3m Innovative Properties Company | 18406 |
28 |
| LG Hausys, Ltd. | 839 |
28 |
| Unitika Ltd. | 441 |
27 |
| E. I. du Pont de Nemours and Company | 4345 |
21 |
| Tepha, Inc. | 233 |
21 |
| Other owners | 2270 |