- All sections
- B - Performing operations; transporting
- B29C - Shaping or joining of plastics; shaping of material in a plastic state, not otherwise provided for; after-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: 889
10-year publication summary
|
16
|
23
|
69
|
109
|
131
|
154
|
130
|
138
|
123
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 18406 |
38 |
| Dow Global Technologies LLC | 10147 |
19 |
| Toray Plastics (America), Inc. | 196 |
17 |
| Kuraray Co., Ltd. | 3392 |
15 |
| Compagnie Generale des Etablissements Michelin | 4450 |
14 |
| UNILIN, besloten vennootschap | 599 |
14 |
| Celgard, LLC | 273 |
13 |
| Kuhne Anlagenbau GmbH | 81 |
13 |
| Compagnie générale des établissements Michelin SCA | 2477 |
12 |
| International Business Machines Corporation | 60644 |
11 |
| Guill Tool & Engineering Co., Inc. | 43 |
11 |
| Toyobo Co., Ltd. | 2286 |
11 |
| Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | 529 |
8 |
| Xerox Corporation | 7503 |
7 |
| Mitsubishi Polyester Film GmbH | 32 |
7 |
| MuCell Extrusion, LLC | 35 |
7 |
| Sekisui Chemical Co., Ltd. | 3159 |
7 |
| Mitsubishi Chemical Corporation | 4313 |
6 |
| BBS Corporation | 17 |
6 |
| Denka Company Limited | 2189 |
6 |
| Other owners | 647 |