- All sections
- B - Performing operations; transporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 21/06 - Shaping thick-walled hollow articles, e.g. projectiles
Patent holdings for IPC class B21K 21/06
Total number of patents in this class: 31
10-year publication summary
1
|
3
|
2
|
3
|
2
|
2
|
1
|
0
|
2
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hitachi Metals, Ltd. | 2175 |
4 |
Hitachi Metals MMC Superalloy, Ltd. | 11 |
3 |
NSK Ltd. | 2719 |
2 |
Penn United Technologies, Inc. | 39 |
2 |
Nippon Institute of Technology | 4 |
2 |
VITKOVICE CYLINDERS a.s. | 3 |
2 |
Neuman Aluminium Fliesspresswerk GmbH | 2 |
2 |
Robert Bosch GmbH | 40953 |
1 |
Aisin AW Co., Ltd. | 2430 |
1 |
NTN Corporation | 5008 |
1 |
Showa Denko K.K. | 2539 |
1 |
Bofors Defence AB | 1 |
1 |
Federal Cartridge Company | 531 |
1 |
Kanemitsu Corporation | 17 |
1 |
Newfrey LLC | 554 |
1 |
Siempelkamp Maschinen- und Anlagenbau GmbH & Co. KG | 118 |
1 |
Textron Innovations Inc. | 2138 |
1 |
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
1 |
No.59 Research Institute of China Ordnance Industry | 4 |
1 |
Douglas Burke | 1 |
1 |
Other owners | 1 |