E02F 9/121
Turntables, i.e. structure rotatable about 360°
Official title: {Turntables, i.e. structure rotatable about 360°}
E02F9/121 (Turntables, i.e. structure rotatable about 360°) appears on 679 US grants and 707 published applications in this corpus.
Search patents in E02F- Granted patents
- 679
- Published applications
- 707
- Assignees
- 168
- Inventors
- 1,282
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 0 |
| 2002 | 6 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 3 |
| 2005 | 4 | 8 |
| 2006 | 5 | 7 |
| 2007 | 3 | 11 |
| 2008 | 8 | 17 |
| 2009 | 7 | 8 |
| 2010 | 7 | 18 |
| 2011 | 10 | 24 |
| 2012 | 9 | 20 |
| 2013 | 18 | 64 |
| 2014 | 39 | 58 |
| 2015 | 51 | 51 |
| 2016 | 41 | 58 |
| 2017 | 49 | 36 |
| 2018 | 41 | 30 |
| 2019 | 39 | 17 |
| 2020 | 17 | 43 |
| 2021 | 33 | 51 |
| 2022 | 20 | 48 |
| 2023 | 30 | 35 |
| 2024 | 48 | 29 |
| 2025 | 37 | 25 |
| 2026 | 31 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power feeding unit and swivel joint6 Oct 2026US 12,753,575 B2Komatsu Ltd.
- Construction machine15 Sep 2026US 12,735,869 B2Hd Construction Equipment Co., Ltd.
- Electrically driven construction machine8 Sep 2026US 12,728,743 B2Hitachi Construction Machinery Tierra Co., Ltd.
- Bearing assembly for driveshafts of draglines1 Sep 2026US 12,723,365 B2Caterpillar Global Mining LLC
- Display system of turning work vehicle25 Aug 2026US 12,716,205 B2Yanmar Power Technology Co., Ltd.
- Drive system of working machine8 Oct 2026US 2026/0308868 A1
- Drive system for work machine, control device for work machine, control method for work machine, storage medium storing control program for work machine, and work machine8 Oct 2026US 2026/0308874 A1Nabtesco Corporation
- Actuator system for work machine, construction machine, control device for work machine, control method for work machine, and computer-readable storage medium storing control program for work machine8 Oct 2026US 2026/0308875 A1Nabtesco Corporation
- Slewing control system, voltage deviation control method, construction machinery including the system1 Oct 2026US 2026/0302989 A1Caterpillar Inc.
- Working machine24 Sep 2026US 2026/0286649 A1Yanmar Holdings Co., Ltd.
Most cited
By later US patents
- Motor drive system for an electric mining shovel85US 4,263,535 ABucyrus-Erie Company · 1981
- Shovel64US 6,789,335 B1Kobelco Construction Machinery Co., Ltd. · 2004
- Control system for automatically controlling actuators of an excavator57US 5,361,211 ASamsung Heavy Industries Co., Ltd. · 1994
- GNSS and optical guidance and machine control48US 9,002,565 B2Agjunction LLC · 2015
- Method of controlling speed change of hydraulic drive device for vehicle and speed change device47US 5,784,883 AKomatsu Ltd. · 1998