- All sections
- E - Fixed constructions
- E02F - Dredgingsoil-shifting
- E02F 3/28 - DredgersSoil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets
Patent holdings for IPC class E02F 3/28
Total number of patents in this class: 322
10-year publication summary
|
16
|
31
|
34
|
32
|
36
|
36
|
21
|
18
|
16
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Komatsu Ltd. | 4661 |
66 |
| Deere & Company | 7906 |
29 |
| Caterpillar Inc. | 10118 |
29 |
| Hitachi Construction Machinery Co., Ltd. | 2728 |
19 |
| Volvo Construction Equipment AB | 1210 |
12 |
| Doosan Bobcat North America Inc. | 631 |
10 |
| J.C. Bamford Excavators Limited | 430 |
9 |
| Blue Leaf I.P., Inc. | 2762 |
8 |
| Guangxi Liugong Machinery Co., Ltd. | 58 |
7 |
| Manitou BF | 173 |
7 |
| MineSense Technologies Ltd. | 63 |
5 |
| ZF Friedrichshafen AG | 7229 |
4 |
| The Toro Company | 1000 |
4 |
| ESCO Group LLC | 315 |
4 |
| Kubota Corporation | 4218 |
3 |
| Sandvik Mining and Construction Oy | 859 |
3 |
| Mitsubishi Logisnext Co., Ltd. | 136 |
3 |
| Manitou Equipment America, LLC | 37 |
3 |
| Jiangsu XCMG Construction Machinery Research Institute Ltd. | 204 |
3 |
| Shanghai Sany Heavy Machinery Co., Ltd | 53 |
3 |
| Other owners | 91 |