- All sections
- B - Performing operations; transporting
- B21F - Working or processing of metal wire
- B21F 3/12 - Coiling wire into particular forms of interconnected helical springs
Patent holdings for IPC class B21F 3/12
Total number of patents in this class: 7
10-year publication summary
|
1
|
1
|
0
|
0
|
0
|
0
|
1
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Itaya Seisaku SHO | 6 |
2 |
| David Truckett | 1 |
1 |
| Paul Rodgers | 10 |
1 |
| Jinyuanbao Mechanical Springs (Dongguan) Ltd. | 1 |
1 |
| Mattress Production Technology Group Limited | 1 |
1 |
| BAL Seal Engineering, LLC | 106 |
1 |
| Other owners | 0 |