- All sections
- E - Fixed constructions
- E02F - Dredging; soil-shifting
- E02F 9/22 - Hydraulic or pneumatic drives
Patent holdings for IPC class E02F 9/22
Total number of patents in this class: 4506
10-year publication summary
|
380
|
362
|
347
|
364
|
339
|
423
|
410
|
416
|
320
|
102
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2498 |
621 |
| Komatsu Ltd. | 4265 |
459 |
| Caterpillar Inc. | 8877 |
360 |
| Volvo Construction Equipment AB | 1172 |
329 |
| Kubota Corporation | 3054 |
179 |
| Kobelco Construction Machinery Co., Ltd. | 1048 |
143 |
| Deere & Company | 6845 |
133 |
| Caterpillar SARL | 441 |
115 |
| Sumitomo Heavy Industries, Ltd. | 1670 |
102 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
80 |
| HD Hyundai Infracore Co., Ltd | 252 |
77 |
| Hitachi Construction Machinery Tierra Co., Ltd. | 182 |
75 |
| Sumitomo(s.h.i.) Construction Machinery Co., Ltd. | 245 |
74 |
| Doosan Infracore Co., Ltd. | 313 |
73 |
| Doosan Bobcat North America Inc. | 508 |
63 |
| Clark Equipment Company | 335 |
61 |
| Sumitomo Construction Machinery Co., Ltd. | 175 |
58 |
| Kawasaki Heavy Industries, Limited | 1524 |
57 |
| Blue Leaf I.P., Inc. | 2758 |
54 |
| KYB Corporation | 1278 |
41 |
| Other owners | 1352 |