E02F 3/00
Dredgers
Official title: Dredgers; Soil-shifting machines (for special purposes E02F5/00; other machines or apparatus for mining E21C; tunnelling E21D)
E02F3/00 (Dredgers) appears on 10,499 US grants and 9,167 published applications in this corpus.
Search patents in E02F- Granted patents
- 10,499
- Published applications
- 9,167
- Assignees
- 2,206
- Inventors
- 13,758
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 217 | 0 |
| 1977 | 187 | 0 |
| 1978 | 190 | 0 |
| 1979 | 126 | 0 |
| 1980 | 140 | 0 |
| 1981 | 161 | 0 |
| 1982 | 137 | 0 |
| 1983 | 119 | 0 |
| 1984 | 86 | 0 |
| 1985 | 86 | 0 |
| 1986 | 79 | 0 |
| 1987 | 92 | 0 |
| 1988 | 109 | 0 |
| 1989 | 145 | 0 |
| 1990 | 126 | 0 |
| 1991 | 94 | 0 |
| 1992 | 103 | 0 |
| 1993 | 120 | 0 |
| 1994 | 78 | 0 |
| 1995 | 97 | 0 |
| 1996 | 109 | 0 |
| 1997 | 115 | 0 |
| 1998 | 135 | 0 |
| 1999 | 173 | 0 |
| 2000 | 176 | 0 |
| 2001 | 153 | 41 |
| 2002 | 144 | 119 |
| 2003 | 145 | 156 |
| 2004 | 129 | 175 |
| 2005 | 134 | 182 |
| 2006 | 148 | 183 |
| 2007 | 107 | 170 |
| 2008 | 86 | 176 |
| 2009 | 136 | 226 |
| 2010 | 173 | 182 |
| 2011 | 156 | 192 |
| 2012 | 131 | 216 |
| 2013 | 177 | 307 |
| 2014 | 247 | 427 |
| 2015 | 336 | 396 |
| 2016 | 326 | 548 |
| 2017 | 437 | 553 |
| 2018 | 427 | 552 |
| 2019 | 516 | 482 |
| 2020 | 441 | 611 |
| 2021 | 415 | 599 |
| 2022 | 440 | 630 |
| 2023 | 396 | 569 |
| 2024 | 568 | 579 |
| 2025 | 535 | 512 |
| 2026 | 396 | 384 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bucket with multiple radius wrapper6 Oct 2026US 12,753,567 B2Caterpillar Inc.
- Working machine6 Oct 2026US 12,753,568 B2J. C. Bamford Excavators Limited
- Construction machine6 Oct 2026US 12,753,569 B2Hitachi Construction Machinery Co., Ltd.
- Control device and control method for loading machine6 Oct 2026US 12,753,570 B2Komatsu Ltd.
- Control device, work machine, control method, and control system6 Oct 2026US 12,753,571 B2Komatsu Ltd.
- Mobile machine including thumb control system and associated method8 Oct 2026US 2026/0308867 A1Caterpillar Inc.
- Drive system of working machine8 Oct 2026US 2026/0308868 A1
- Autonomous driving information calculation system and autonomous driving information calculation method8 Oct 2026US 2026/0308869 A1Hazama Ando Corporation
- Drive system for work machine, control device for work machine, control method for work machine, and storage medium storing control program for work machine8 Oct 2026US 2026/0308870 A1Nabtesco Corporation
- Multidirectional grading control for work machines8 Oct 2026US 2026/0308871 A1Deere & Company
Most cited
By later US patents
- Method and apparatus for establishing a perimeter defining an area to be traversed by a mobile machine227US 6,112,143 ACaterpillar Inc. · 2000
- Method and apparatus for real-time monitoring and coordination of multiple geography altering machines on a work site223US 5,646,844 ACaterpillar Inc. · 1997
- Position sensing system for surveying and grading189US 4,820,041 AAGTEK Development Company, Inc. · 1989
- Method and apparatus for accurately positioning a tool on a mobile machine using on-board laser and positioning system172US 6,108,076 ATrimble Navigation Limited · 2000
- System for autonomous excavation and truck loading171US 6,363,632 B1Carnegie Mellon University · 2002