- 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: 327
10-year publication summary
|
17
|
35
|
36
|
37
|
38
|
40
|
22
|
19
|
20
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Komatsu Ltd. | 4723 |
67 |
| Deere & Company | 8097 |
30 |
| Caterpillar Inc. | 10267 |
29 |
| Hitachi Construction Machinery Co., Ltd. | 2752 |
19 |
| Volvo Construction Equipment AB | 1222 |
12 |
| Doosan Bobcat North America Inc. | 650 |
10 |
| J.C. Bamford Excavators Limited | 445 |
9 |
| Blue Leaf I.P., Inc. | 2932 |
8 |
| Guangxi Liugong Machinery Co., Ltd. | 69 |
7 |
| Manitou BF | 185 |
7 |
| MineSense Technologies Ltd. | 63 |
5 |
| ZF Friedrichshafen AG | 7238 |
4 |
| Sandvik Mining and Construction Oy | 888 |
4 |
| The Toro Company | 1017 |
4 |
| ESCO Group LLC | 311 |
4 |
| Kubota Corporation | 4391 |
3 |
| Mitsubishi Logisnext Co., Ltd. | 98 |
3 |
| Manitou Equipment America, LLC | 37 |
3 |
| Bad Boy Mowers, LLC | 92 |
3 |
| Jiangsu XCMG Construction Machinery Research Institute Ltd. | 217 |
3 |
| Other owners | 93 |