- All sections
- E - Fixed constructions
- E02F - Dredgingsoil-shifting
- E02F 9/22 - Hydraulic or pneumatic drives
Patent holdings for IPC class E02F 9/22
Total number of patents in this class: 5028
10-year publication summary
|
340
|
357
|
334
|
408
|
410
|
439
|
337
|
299
|
305
|
42
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2677 |
671 |
| Komatsu Ltd. | 4645 |
537 |
| Caterpillar Inc. | 9992 |
388 |
| Volvo Construction Equipment AB | 1207 |
332 |
| Kubota Corporation | 4147 |
229 |
| Kobelco Construction Machinery Co., Ltd. | 1174 |
159 |
| Deere & Company | 7836 |
148 |
| Caterpillar SARL | 481 |
135 |
| Sumitomo Heavy Industries, Ltd. | 2008 |
123 |
| HD Hyundai Infracore Co., Ltd | 292 |
88 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3144 |
86 |
| Sumitomo Construction Machinery Co., Ltd. | 227 |
84 |
| Doosan Bobcat North America Inc. | 615 |
78 |
| Hitachi Construction Machinery Tierra Co., Ltd. | 201 |
77 |
| Sumitomo(s.h.i.) Construction Machinery Co., Ltd. | 243 |
74 |
| Doosan Infracore Co., Ltd. | 308 |
72 |
| Blue Leaf I.P., Inc. | 2774 |
66 |
| Kawasaki Heavy Industries, Limited | 1630 |
61 |
| Clark Equipment Company | 298 |
58 |
| KYB Corporation | 1399 |
44 |
| Other owners | 1518 |