E21C 35/18
Mining picks
Official title: Mining picks; Holders therefor (planing knives E21C27/44)
E21C35/18 (Mining picks) appears on 893 US grants and 670 published applications in this corpus.
Search patents in E21C- Granted patents
- 893
- Published applications
- 670
- Assignees
- 208
- Inventors
- 817
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 19 | 0 |
| 1982 | 10 | 0 |
| 1983 | 6 | 0 |
| 1984 | 17 | 0 |
| 1985 | 15 | 0 |
| 1986 | 16 | 0 |
| 1987 | 25 | 0 |
| 1988 | 18 | 0 |
| 1989 | 16 | 0 |
| 1990 | 18 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 7 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 16 | 0 |
| 1999 | 7 | 0 |
| 2000 | 12 | 0 |
| 2001 | 17 | 0 |
| 2002 | 17 | 15 |
| 2003 | 12 | 16 |
| 2004 | 12 | 11 |
| 2005 | 11 | 13 |
| 2006 | 12 | 21 |
| 2007 | 14 | 20 |
| 2008 | 30 | 67 |
| 2009 | 18 | 33 |
| 2010 | 19 | 25 |
| 2011 | 34 | 29 |
| 2012 | 19 | 36 |
| 2013 | 31 | 39 |
| 2014 | 31 | 40 |
| 2015 | 33 | 46 |
| 2016 | 36 | 34 |
| 2017 | 21 | 40 |
| 2018 | 30 | 37 |
| 2019 | 45 | 31 |
| 2020 | 35 | 17 |
| 2021 | 37 | 25 |
| 2022 | 21 | 17 |
| 2023 | 15 | 18 |
| 2024 | 12 | 16 |
| 2025 | 11 | 11 |
| 2026 | 16 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21C 35/19Means for fixing picks or holders502
- E21C 35/183With inserts or layers of wear-resisting material382
- E21C 35/188Characterised by adaptations to use an extraction tool184
- E21C 35/187With arrangement of fluid-spraying nozzles82
- E21C 35/184Reversible picks, i.e. having two working ends, one operating, the other in9
- E21C 35/186Using a locking piston actuated hydraulically1
Recent patents
- Non-rotating bit for cutting tool22 Sep 2026US 12,741,396 B2Caterpillar Paving Products Inc.
- 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.
- Cutting tool mounting assembly with split, modular and wireless wear detection system16 Jun 2026US 12,654,230 B2Kennametal Inc.
- Chisel with double limit discs9 Jun 2026US 12,649,994 B2Jiangsu Wuyuan Machinery Manufacturing Co., Ltd
- Pavement grinding drum having modular bit mountings13 Aug 2026US 2026/0234878 A1Graco Minnesota Inc.
- Pick tool13 Aug 2026US 2026/0235028 A1Element Six Limited
- Modular carbide tooling, hard and exotic materials combined with holders of different materials with options for wear and protection and machine tie30 Jul 2026US 2026/0218611 A1Kennametal Inc.
- Rebuildable hard surface cutting tip for mining bit25 Jun 2026US 2026/0176967 A1Bit Service Company LTD
- Long Tapered Retainer Groove Road Planing Body11 Jun 2026US 2026/0160164 A1Kennametal Inc.
Most cited
By later US patents
- Embossed washer182US 6,824,225 B2Kennametal Inc. · 2004
- Mining machine bit and mounting thereof178US 4,201,421 A1980
- Tool comprised of a holder body and a hard insert and method of using same177US 5,417,475 ASandvik AB · 1995
- Replaceable wear surface for bit support172US 6,692,083 B2Keystone Engineering & Manufacturing Corporation · 2004
- Protective wear sleeve having tapered lock and retainer172US 6,786,557 B2Kennametal Inc. · 2004