- All sections
- E - Fixed constructions
- E02F - Dredging; soil-shifting
- E02F 9/20 - Drives; Control devices
Patent holdings for IPC class E02F 9/20
Total number of patents in this class: 5038
10-year publication summary
|
373
|
390
|
383
|
411
|
443
|
516
|
505
|
547
|
475
|
146
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Komatsu Ltd. | 4265 |
826 |
| Hitachi Construction Machinery Co., Ltd. | 2498 |
688 |
| Caterpillar Inc. | 8877 |
481 |
| Kobelco Construction Machinery Co., Ltd. | 1048 |
251 |
| Deere & Company | 6845 |
207 |
| Volvo Construction Equipment AB | 1172 |
199 |
| Sumitomo Heavy Industries, Ltd. | 1670 |
161 |
| Kubota Corporation | 3054 |
134 |
| Sumitomo(s.h.i.) Construction Machinery Co., Ltd. | 245 |
103 |
| Sumitomo Construction Machinery Co., Ltd. | 175 |
82 |
| Doosan Bobcat North America Inc. | 508 |
75 |
| Joy Global Surface Mining Inc | 356 |
73 |
| Doosan Infracore Co., Ltd. | 313 |
72 |
| Clark Equipment Company | 335 |
57 |
| Hitachi Construction Machinery Tierra Co., Ltd. | 182 |
55 |
| Caterpillar SARL | 441 |
50 |
| HD Hyundai Infracore Co., Ltd | 252 |
48 |
| Blue Leaf I.P., Inc. | 2758 |
45 |
| ZF Friedrichshafen AG | 6820 |
34 |
| Caterpillar Trimble Control Technologies LLC | 134 |
32 |
| Other owners | 1365 |