- All sections
- B - Performing operationstransporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 1/02 - Making machine elements balls, rolls, or rollers, e.g. for bearings
Patent holdings for IPC class B21K 1/02
Total number of patents in this class: 47
10-year publication summary
|
3
|
1
|
2
|
5
|
3
|
2
|
0
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 38148 |
6 |
| Corning Incorporated | 10125 |
3 |
| Lexmark International, Inc. | 1703 |
3 |
| NTN Corporation | 4976 |
2 |
| NSK Ltd. | 2738 |
2 |
| Olin Corporation | 521 |
2 |
| Rexnord Industries, LLC | 193 |
2 |
| Archem Inc. | 114 |
2 |
| RWS GmbH | 156 |
2 |
| Bridgestone Corporation | 7147 |
1 |
| Schaeffler Technologies GmbH & Co. KG | 846 |
1 |
| Amatsuji Steel Ball Mfg. Co., Ltd. | 4 |
1 |
| Elgin Industries, Inc. | 8 |
1 |
| FABIO PERINI S.p.A. | 149 |
1 |
| FRC Holding Corp., DBA Finzer Roller | 2 |
1 |
| National Machinery LLC | 42 |
1 |
| Nippon Steel Corporation | 6012 |
1 |
| NN Europe S.p.A. | 1 |
1 |
| Schaeffler Korea Corp. | 7 |
1 |
| Schafer Composites GmbH | 3 |
1 |
| Other owners | 12 |