- All sections
- C - Chemistrymetallurgy
- C08J - Working-upgeneral processes of compoundingafter-treatment not covered by subclasses , , , or
- C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
Patent holdings for IPC class C08J 11/12
Total number of patents in this class: 530
10-year publication summary
|
10
|
17
|
16
|
25
|
31
|
59
|
59
|
85
|
75
|
53
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7244 |
20 |
| Eastman Chemical Company | 2207 |
19 |
| Equistar Chemicals, LP | 346 |
14 |
| Sumitomo Chemical Company, Limited | 9018 |
13 |
| GreenMantra Recycling Technologies Ltd. | 67 |
12 |
| Arkema France | 4015 |
11 |
| Tohoku University | 2762 |
11 |
| Basell Poliolefine Italia S.r.l. | 895 |
10 |
| Covestro Deutschland AG | 2725 |
10 |
| INEOS Styrolution Group GmbH | 343 |
10 |
| The Japan Steel Works, Ltd. | 738 |
10 |
| SABIC Global Technologies B.V. | 4302 |
10 |
| Chevron U.S.A. Inc. | 3939 |
8 |
| Microworks America, Inc. | 13 |
7 |
| Sekisui Chemical Co., Ltd. | 3378 |
6 |
| LG Chem, Ltd. | 17564 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3788 |
5 |
| Res Polyflow LLC | 21 |
5 |
| SK Innovation Co., Ltd. | 1303 |
5 |
| Compagnie Generale des Etablissements Michelin | 4711 |
5 |
| Other owners | 334 |