E01C 23/088
Rotary tools
Official title: Rotary tools, e.g. milling drums {(for forming recesses to receive marking materials E01C23/0946)}
E01C23/088 (Rotary tools) appears on 969 US grants and 963 published applications in this corpus.
Search patents in E01C- Granted patents
- 969
- Published applications
- 963
- Assignees
- 163
- Inventors
- 802
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 3 |
| 2003 | 4 | 3 |
| 2004 | 3 | 8 |
| 2005 | 3 | 11 |
| 2006 | 10 | 13 |
| 2007 | 5 | 13 |
| 2008 | 10 | 19 |
| 2009 | 7 | 16 |
| 2010 | 13 | 16 |
| 2011 | 23 | 32 |
| 2012 | 19 | 28 |
| 2013 | 23 | 49 |
| 2014 | 38 | 54 |
| 2015 | 52 | 45 |
| 2016 | 43 | 61 |
| 2017 | 34 | 66 |
| 2018 | 60 | 64 |
| 2019 | 92 | 80 |
| 2020 | 71 | 71 |
| 2021 | 66 | 79 |
| 2022 | 59 | 68 |
| 2023 | 72 | 65 |
| 2024 | 43 | 38 |
| 2025 | 35 | 32 |
| 2026 | 29 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Predominantly electrically operated earth working machine29 Sep 2026US 12,747,547 B2Wirtgen GmbH
- Milling attachment15 Sep 2026US 12,735,850 B2Wirtgen GmbH
- Ground milling machine, in particular road milling machine, stabilizer or recycler, method for moving a ground milling machine in a direction up to 90º transverse to a longitudinal machine direction and method for positioning a ground milling machine for maintenance works and/or for transport8 Sep 2026US 12,728,919 B2BOMAG GmbH
- System and method for automatically guiding a road construction machine8 Sep 2026US 12,729,490 B2Roadtec, Inc.
- High power laser tunneling mining and construction equipment and methods of use25 Aug 2026US 12,715,063 B2Foro Energy, Inc.
- Hinge assembly for undercarriage system of work machine1 Oct 2026US 2026/0296539 A1Caterpillar Paving Products Inc.
- Material removal manufacture, assembly, and method of assembly1 Oct 2026US 2026/0297868 A1Dynatech Systems, Inc.
- Rolling Wedge Cutter Drum1 Oct 2026US 2026/0297869 A1
- Differential milling and paving17 Sep 2026US 2026/0275660 A1Wirtgen GmbH
- Air circulation system for rotor assembly17 Sep 2026US 2026/0275661 A1Caterpillar Paving Products Inc.
Most cited
By later US patents
- Rotary cutter for a road planer151US 4,006,936 ADresser Industries, Inc. · 1977
- Roadway planing apparatus104US 4,325,580 ACMI Corporation · 1982
- Method and apparatus for planing a paved roadway100US 4,139,318 ACMI Corporation · 1979
- Roadworking machine90US 5,893,677 AWirtgen GmbH · 1999
- Object responsive implement control system79US 5,607,205 ACaterpillar Inc. · 1997