- All sections
- B - Performing operationstransporting
- B29C - Shaping or joining of plasticsshaping of material in a plastic state, not otherwise provided forafter-treatment of the shaped products, e.g. repairing
- B29C 48/21 - Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
Patent holdings for IPC class B29C 48/21
Total number of patents in this class: 1139
10-year publication summary
|
68
|
112
|
132
|
145
|
133
|
138
|
126
|
126
|
124
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17576 |
43 |
| Dow Global Technologies LLC | 10742 |
22 |
| UNILIN, besloten vennootschap | 946 |
20 |
| Kuraray Co., Ltd. | 3563 |
18 |
| Toray Plastics (America), Inc. | 198 |
17 |
| Celgard, LLC | 317 |
17 |
| Toyobo Co., Ltd. | 2497 |
16 |
| Compagnie générale des établissements Michelin SCA | 2647 |
14 |
| Guill Tool & Engineering Co., Inc. | 49 |
14 |
| Kuhne Anlagenbau GmbH | 82 |
14 |
| Compagnie Generale des Etablissements Michelin | 4861 |
14 |
| MuCell Extrusion, LLC | 42 |
13 |
| International Business Machines Corporation | 62076 |
11 |
| Denka Company Limited | 2682 |
11 |
| Tensar International Corporation | 139 |
9 |
| Encore Wire Corporation | 209 |
8 |
| Gunze Limited | 352 |
8 |
| Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | 571 |
8 |
| Sekisui Chemical Co., Ltd. | 3543 |
8 |
| Cryovac, LLC | 341 |
8 |
| Other owners | 846 |