E01C 19/34
Power-driven rammers or tampers
Official title: Power-driven rammers or tampers {, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight}
E01C19/34 (Power-driven rammers or tampers) appears on 474 US grants and 376 published applications in this corpus.
Search patents in E01C- Granted patents
- 474
- Published applications
- 376
- Assignees
- 154
- Inventors
- 641
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 11 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 11 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 14 | 0 |
| 2000 | 11 | 0 |
| 2001 | 16 | 2 |
| 2002 | 12 | 12 |
| 2003 | 7 | 9 |
| 2004 | 14 | 12 |
| 2005 | 10 | 14 |
| 2006 | 12 | 18 |
| 2007 | 11 | 12 |
| 2008 | 9 | 8 |
| 2009 | 9 | 14 |
| 2010 | 9 | 19 |
| 2011 | 14 | 14 |
| 2012 | 13 | 5 |
| 2013 | 9 | 7 |
| 2014 | 5 | 7 |
| 2015 | 9 | 21 |
| 2016 | 16 | 8 |
| 2017 | 11 | 19 |
| 2018 | 20 | 17 |
| 2019 | 25 | 15 |
| 2020 | 9 | 16 |
| 2021 | 9 | 20 |
| 2022 | 12 | 23 |
| 2023 | 14 | 30 |
| 2024 | 13 | 24 |
| 2025 | 17 | 19 |
| 2026 | 18 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction tool handle29 Sep 2026US 12,747,543 B2Milwaukee Electric Tool Corporation
- Battery-powered stand-alone motor unit29 Sep 2026US 12,749,949 B2Milwaukee Electric Tool Corporation
- Vibrator mechanism usable with a concrete finishing tool1 Sep 2026US 12,723,357 B2
- Plate compactor28 Jul 2026US 12,692,673 B2Milwaukee Electric Tool Corporation
- Electronically actuated leveling system for screeding concrete14 Jul 2026US 12,680,240 B2Ligchine International Corporation
- Plate compactor1 Oct 2026US 2026/0297864 A1Milwaukee Electric Tool Corporation
- Vibrating power tool and components thereof3 Sep 2026US 2026/0258613 A1
- Grading attachment23 Jul 2026US 2026/0210073 A1Ligchine International Corporation
- Drive-in boom screed23 Jul 2026US 2026/0210135 A1Ligchine International Corporation
- Plate compactor transport device25 Jun 2026US 2026/0176830 A1Mikasa Sangyo Co., Ltd.
Most cited
By later US patents
- Convertible construction machine118US 4,029,165 AMiller Formless Co., Inc. · 1977
- Mobile soil compacting device whose direction of travel is stabilized91US 6,846,128 B2Wacker Construction Equipment AG · 2005
- Screeding apparatus and method90US 4,930,935 A1990
- Asphalt pavement recycling apparatus86US 4,124,325 ACutler Repaving, Inc. · 1978
- Screeding apparatus and method86US 4,655,633 A1987