- All sections
- B - Performing operations; transporting
- B29B - Preparation or pretreatment of the material to be shaped; making granules or preforms; recovery of plastics or other constituents of waste material containing plastics
- B29B 7/20 - Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
Patent holdings for IPC class B29B 7/20
Total number of patents in this class: 55
10-year publication summary
|
1
|
3
|
8
|
3
|
8
|
6
|
7
|
6
|
7
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
10 |
| Compagnie générale des établissements Michelin SCA | 2477 |
4 |
| Compagnie Generale des Etablissements Michelin | 4450 |
4 |
| Wuxi Boyu Plastic Machinery Co., Ltd. | 7 |
3 |
| Braskem America, Inc. | 177 |
2 |
| Colmec S.p.A. | 3 |
2 |
| Kobe Steel, Ltd. | 912 |
2 |
| Kuraray Co., Ltd. | 3392 |
2 |
| Pirelli Tyre S.p.A. | 1832 |
2 |
| Suzuka Engineering Co., Ltd. | 8 |
2 |
| Hyundai Motor Company | 19021 |
1 |
| JTEKT Corporation | 2423 |
1 |
| Costruzioni Meccaniche Luigi Bandera S.p.A. | 63 |
1 |
| Gruenenthal GmbH | 120 |
1 |
| Korea Fuel-Tech Corporation | 20 |
1 |
| List Holding AG | 42 |
1 |
| Nihon Spindle Manufacturing Co., Ltd | 74 |
1 |
| Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences | 80 |
1 |
| Shanghai Kumhosunny Plastics Co., Ltd | 25 |
1 |
| Shinil Chemical Industry Co., Ltd. | 7 |
1 |
| Other owners | 12 |