- 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: 700
10-year publication summary
|
17
|
16
|
25
|
31
|
59
|
59
|
85
|
79
|
133
|
78
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7262 |
31 |
| Sumitomo Chemical Company, Limited | 8968 |
21 |
| Eastman Chemical Company | 2092 |
19 |
| Equistar Chemicals, LP | 347 |
16 |
| Basell Poliolefine Italia S.r.l. | 937 |
15 |
| Arkema France | 4242 |
13 |
| GreenMantra Recycling Technologies Ltd. | 72 |
13 |
| Tohoku University | 2981 |
13 |
| Resonac Corporation | 3546 |
12 |
| BASF SE | 21308 |
11 |
| The Japan Steel Works, Ltd. | 826 |
11 |
| SABIC Global Technologies B.V. | 4599 |
11 |
| Covestro Deutschland AG | 2833 |
10 |
| INEOS Styrolution Group GmbH | 360 |
10 |
| ENEOS Corporation | 697 |
10 |
| Chevron U.S.A. Inc. | 4136 |
9 |
| National Institute of Advanced Industrial Science and Technology | 3794 |
8 |
| Nippon Steel Corporation | 6895 |
7 |
| Microworks Co., Ltd. | 127 |
7 |
| Sekisui Chemical Co., Ltd. | 3619 |
6 |
| Other owners | 447 |