- 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: 315
10-year publication summary
|
35
|
17
|
35
|
35
|
37
|
38
|
39
|
21
|
19
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Komatsu Ltd. | 4556 |
65 |
| Caterpillar Inc. | 9558 |
29 |
| Deere & Company | 7619 |
28 |
| Hitachi Construction Machinery Co., Ltd. | 2643 |
19 |
| Volvo Construction Equipment AB | 1192 |
12 |
| J.C. Bamford Excavators Limited | 406 |
9 |
| Blue Leaf I.P., Inc. | 2806 |
8 |
| Doosan Bobcat North America Inc. | 575 |
8 |
| Guangxi Liugong Machinery Co., Ltd. | 55 |
7 |
| Manitou BF | 155 |
6 |
| MineSense Technologies Ltd. | 61 |
5 |
| The Toro Company | 964 |
4 |
| ESCO Group LLC | 315 |
4 |
| ZF Friedrichshafen AG | 7149 |
3 |
| Kubota Corporation | 3912 |
3 |
| Sandvik Mining and Construction Oy | 831 |
3 |
| Mitsubishi Logisnext Co., Ltd. | 132 |
3 |
| Jiangsu XCMG Construction Machinery Research Institute Ltd. | 169 |
3 |
| Shanghai Sany Heavy Machinery Co., Ltd | 52 |
3 |
| Kinematic ApS | 3 |
3 |
| Other owners | 90 |