E21C 35/188
Characterised by adaptations to use an extraction tool
Official title: {characterised by adaptations to use an extraction tool}
E21C35/188 (Characterised by adaptations to use an extraction tool) appears on 184 US grants and 109 published applications in this corpus.
Search patents in E21C- Granted patents
- 184
- Published applications
- 109
- Assignees
- 51
- Inventors
- 179
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 0 |
| 2002 | 17 | 13 |
| 2003 | 12 | 5 |
| 2004 | 2 | 2 |
| 2005 | 5 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 2 |
| 2008 | 4 | 20 |
| 2009 | 4 | 7 |
| 2010 | 8 | 6 |
| 2011 | 11 | 1 |
| 2012 | 4 | 9 |
| 2013 | 8 | 1 |
| 2014 | 6 | 2 |
| 2015 | 4 | 6 |
| 2016 | 3 | 6 |
| 2017 | 2 | 4 |
| 2018 | 6 | 4 |
| 2019 | 7 | 6 |
| 2020 | 7 | 3 |
| 2021 | 8 | 4 |
| 2022 | 6 | 4 |
| 2023 | 3 | 0 |
| 2024 | 3 | 1 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bit holder insertion and extraction system28 Jul 2026US 12,692,789 B1The Sollami Company
- Block for holding a cutting bit21 Jul 2026US 12,687,111 B2Kennametal Inc.
- Bit holder with slotted shank and annular ring18 Nov 2025US 12,473,829 B1The Sollami Company
- Sheath for a soil working roller5 Aug 2025US 12,376,508 B2Hamm AG
- Mineral bits and mounts30 Apr 2024US 11,970,944 B2Carriere Industrial Supply Limited
- Block for holding a cutting bit24 Apr 2025US 2025/0129720 A1Kennametal Inc.
- Rotor bit extraction tool with a lighting unit15 Feb 2024US 2024/0051101 A1Caterpillar Paving Products Inc.
- Tool Bit Assembly13 Oct 2022US 2022/0325624 A1XCal Tools—Bristol, LLC
- Systems and Methods for Replacing Wear Parts4 Aug 2022US 2022/0244167 A1Caterpillar Paving Products Inc.
- Systems and methods for counting work machine bit removal16 Jun 2022US 2022/0184757 A1Caterpillar Paving Products Inc.
Most cited
By later US patents
- Rotatable cutting tool with notched radial fins171US 6,341,823 B12002
- Bit holders and bit blocks for road milling, mining and trenching equipment163US 6,371,567 B1The Sollami Company · 2002
- Point attack bit156US 6,019,434 AFansteel Inc. · 2000
- Cutting bit insert configured in a polygonal pyramid shape and having a ring mounted in surrounding relationship with the insert151US 6,196,636 B12001
- Rotatable cutting bit and bit washer therefor144US 6,113,195 ASandvik AB · 2000