- All sections
- B - Performing operationstransporting
- B21L - Making metal chains
- B21L 21/00 - Tools or implements for repairing chains using metal-working operations, e.g. for detaching deformed chain links
Patent holdings for IPC class B21L 21/00
Total number of patents in this class: 20
10-year publication summary
|
2
|
0
|
1
|
3
|
1
|
5
|
3
|
2
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 370 |
3 |
| Wolf Tooth Components, LLC | 61 |
2 |
| U-power Collection Enterprise Co., Ltd. | 4 |
2 |
| Hewlett-Packard Development Company, L.P. | 27448 |
1 |
| Campagnolo S.r.l. | 348 |
1 |
| Heavy Equipment Repair Ltd. | 2 |
1 |
| Motion Pro, Inc. | 44 |
1 |
| Poul Chang Metal Industry Co., Ltd. | 13 |
1 |
| Ramsey Products Corporation | 19 |
1 |
| Rexnord Industries, LLC | 194 |
1 |
| Specialized Bicycle Components, Inc. | 736 |
1 |
| Starwinn Cycle Corporation | 3 |
1 |
| Bib Creative Co., Ltd. | 10 |
1 |
| WTC Machinery, LLC | 2 |
1 |
| Daysaver AG | 7 |
1 |
| Dave's Victory Fabrication | 1 |
1 |
| Other owners | 0 |