- All sections
- B - Performing operations; transporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; punching metal
- B21D 53/16 - Making other particular articles rings, e.g. barrel hoops
Patent holdings for IPC class B21D 53/16
Total number of patents in this class: 63
10-year publication summary
|
7
|
7
|
7
|
8
|
10
|
5
|
2
|
2
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kanemitsu Corporation | 17 |
8 |
| NHK Spring Co., Ltd. | 1657 |
6 |
| NSK Ltd. | 2719 |
3 |
| Hugo Benzing GmbH & Co. KG | 23 |
3 |
| Robert Bosch GmbH | 40953 |
2 |
| Berndorf Band GmbH | 111 |
2 |
| Drum Workshop, Inc. | 203 |
2 |
| Gates Corporation | 1182 |
2 |
| Haldex Brake Corporation | 35 |
2 |
| HOERBIGER Antriebstechnik Holding GmbH | 55 |
2 |
| Ihara Science Corporation | 30 |
2 |
| Inno-Spin LLC | 13 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Denso Corporation | 23338 |
1 |
| Hyundai Motor Company | 19021 |
1 |
| Hamilton Sundstrand Corporation | 4525 |
1 |
| NTN Corporation | 5008 |
1 |
| JTEKT Corporation | 2423 |
1 |
| Adolf Schnorr GmbH & Co. KG | 11 |
1 |
| Amsted Rail Company, Inc. | 432 |
1 |
| Other owners | 19 |