- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means for damping vibration
- F16F 3/04 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
Patent holdings for IPC class F16F 3/04
Total number of patents in this class: 165
10-year publication summary
|
19
|
19
|
25
|
27
|
17
|
10
|
7
|
9
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Piolax Inc. | 393 |
8 |
| Renton Coil Spring Company | 24 |
7 |
| L & P Property Management Company | 962 |
5 |
| Sealy Technology LLC | 348 |
5 |
| Seescan, Inc. | 499 |
5 |
| NHK Spring Co., Ltd. | 1769 |
4 |
| Litens Automotive Partnership | 331 |
3 |
| Nichias Corporation | 388 |
3 |
| HS Products Ltd. | 38 |
3 |
| Lace | 11 |
3 |
| Canon Inc. | 38148 |
2 |
| Raytheon Company | 8444 |
2 |
| Schaeffler Technologies AG & Co. KG | 9395 |
2 |
| BAE Systems Information and Electronic Systems Integration Inc. | 1807 |
2 |
| Fisher Controls International LLC | 1515 |
2 |
| Harrison Spinks Components Limited | 18 |
2 |
| M-B-W Inc. | 23 |
2 |
| Meidensha Corporation | 855 |
2 |
| National University Corporation Saitama University | 128 |
2 |
| Peugeot Citroen Automobiles SA | 1843 |
2 |
| Other owners | 99 |