- 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: 1104
10-year publication summary
|
24
|
68
|
112
|
132
|
145
|
132
|
138
|
126
|
126
|
116
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17719 |
43 |
| Dow Global Technologies LLC | 10571 |
22 |
| UNILIN, besloten vennootschap | 910 |
19 |
| Toray Plastics (America), Inc. | 197 |
17 |
| Celgard, LLC | 319 |
17 |
| Kuraray Co., Ltd. | 3544 |
17 |
| Compagnie générale des établissements Michelin SCA | 2595 |
14 |
| Kuhne Anlagenbau GmbH | 80 |
14 |
| Toyobo Co., Ltd. | 2471 |
14 |
| Compagnie Generale des Etablissements Michelin | 4798 |
14 |
| MuCell Extrusion, LLC | 42 |
13 |
| Guill Tool & Engineering Co., Inc. | 47 |
12 |
| International Business Machines Corporation | 61747 |
11 |
| Denka Company Limited | 2655 |
10 |
| Tensar International Corporation | 135 |
9 |
| Borealis AG | 2781 |
8 |
| Gunze Limited | 352 |
8 |
| Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | 572 |
8 |
| Sekisui Chemical Co., Ltd. | 3508 |
8 |
| Mitsubishi Chemical Corporation | 4612 |
7 |
| Other owners | 819 |