- All sections
- B - Performing operations; transporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling; auxiliary operations used in connection with metal-working without essentially removing material
- B21C 23/00 - Extruding metal; Impact extrusion
Patent holdings for IPC class B21C 23/00
Total number of patents in this class: 441
10-year publication summary
38
|
34
|
54
|
48
|
41
|
39
|
34
|
26
|
33
|
15
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Battelle Memorial Institute | 2397 |
22 |
Aisin Keikinzoku Co., Ltd. | 79 |
13 |
Honeywell International Inc. | 13759 |
10 |
Ball Corporation | 391 |
8 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
8 |
Manchester Copper Products, LLC | 16 |
8 |
National University Corporation Kumamoto University | 380 |
7 |
Rio Tinto ALCAN International Limited | 215 |
7 |
ASMAG-Holding GmbH | 45 |
6 |
Benteler Automobiltechnik GmbH | 266 |
6 |
Constellium SINGEN GmbH | 87 |
6 |
Norsk Hydro ASA | 279 |
6 |
UACJ Corporation | 658 |
6 |
Showa Denko K.K. | 2366 |
5 |
Korea Institute of Industrial Technology | 1001 |
5 |
Nippon Steel Corporation | 5955 |
5 |
Ube Machinery Corporation, Ltd. | 119 |
5 |
American Axle & Manufacturing, Inc. | 659 |
4 |
BIOTRONIK AG | 404 |
4 |
Bwe Limited | 13 |
4 |
Other owners | 296 |