- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 53/12 - Making other particular articles parts of bearingsMaking other particular articles sleevesMaking other particular articles valve seats or the like cages for bearings
Patent holdings for IPC class B21D 53/12
Total number of patents in this class: 80
10-year publication summary
|
12
|
7
|
7
|
7
|
8
|
9
|
0
|
3
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NTN Corporation | 4981 |
21 |
| Aktiebolaget SKF | 2988 |
15 |
| Schaeffler Technologies AG & Co. KG | 10035 |
10 |
| Bowman International Limited | 27 |
7 |
| Temper Corporation | 34 |
5 |
| NSK Ltd. | 2802 |
3 |
| Nakanishi Metal Works Co., Ltd. | 120 |
3 |
| Schaeffler Technologies GmbH & Co. KG | 846 |
2 |
| ThyssenKrupp Steel Europe AG | 961 |
2 |
| The Timken Company | 362 |
2 |
| HSP Schwahlen GmbH | 5 |
2 |
| Inno-Spin LLC | 13 |
2 |
| JTEKT Corporation | 2516 |
1 |
| AB SKF | 156 |
1 |
| Schaeffler Group USA, Inc. | 309 |
1 |
| Wf-maschinenbau und Blechformtechnik GmbH & Co. KG | 12 |
1 |
| Wf-maschinenbau U. Blechformtechnik GmbH & Co. KG | 3 |
1 |
| GKN Driveline Deutschland | 1 |
1 |
| Other owners | 0 |