E01C 23/127
Rotary
Official title: {rotary, e.g. rotary hammers}
E01C23/127 (Rotary) appears on 430 US grants and 456 published applications in this corpus.
Search patents in E01C- Granted patents
- 430
- Published applications
- 456
- Assignees
- 58
- Inventors
- 324
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 5 |
| 2009 | 0 | 3 |
| 2010 | 3 | 5 |
| 2011 | 7 | 9 |
| 2012 | 6 | 5 |
| 2013 | 9 | 20 |
| 2014 | 12 | 29 |
| 2015 | 25 | 25 |
| 2016 | 25 | 34 |
| 2017 | 23 | 40 |
| 2018 | 35 | 37 |
| 2019 | 49 | 47 |
| 2020 | 46 | 35 |
| 2021 | 41 | 43 |
| 2022 | 25 | 35 |
| 2023 | 45 | 39 |
| 2024 | 34 | 14 |
| 2025 | 16 | 15 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Milling attachment15 Sep 2026US 12,735,850 B2Wirtgen GmbH
- System and method for automatically guiding a road construction machine8 Sep 2026US 12,729,490 B2Roadtec, Inc.
- Method for controlling a road milling machine and road milling machine14 Jul 2026US 12,680,243 B2BOMAG GmbH
- Rolling wedge cutter drum30 Jun 2026US 12,668,933 B1
- Self-propelled ground-processing machine and method for controlling a self-propelled ground-processing machine, as well as method for processing the ground with one or more self-propelled ground-processing machines19 May 2026US 12,630,984 B2Wirtgen GmbH
- Material removal manufacture, assembly, and method of assembly1 Oct 2026US 2026/0297868 A1Dynatech Systems, Inc.
- Rolling Wedge Cutter Drum1 Oct 2026US 2026/0297869 A1
- Air circulation system for rotor assembly17 Sep 2026US 2026/0275661 A1Caterpillar Paving Products Inc.
- Method for determining an assumed motion path traveled by a ground milling machine, and ground milling machine10 Sep 2026US 2026/0266004 A1BOMAG GmbH
- Systems and methods for road milling with adaptive plunge velocity6 Aug 2026US 2026/0226692 A1Caterpillar Paving Products Inc.
Most cited
By later US patents
- Pavement planing machine71US 4,878,713 AAlitec Corporation · 1989
- Roadway pavement planing machine57US 4,186,968 ABarco Manufacturing Company · 1980
- Road milling machine and method for measuring the milling depth54US 8,246,270 B2Wirtgen GmbH · 2012
- Ground breaking apparatus51US 5,259,692 A1993
- Apparatus and method for pulverizing asphalt47US 4,704,045 A1987