E21C 35/1936
The picks having a square- or rectangular-section shank
Official title: {the picks having a square- or rectangular-section shank}
E21C35/1936 (The picks having a square- or rectangular-section shank) appears on 23 US grants and 23 published applications in this corpus.
Search patents in E21C- Granted patents
- 23
- Published applications
- 23
- Assignees
- 21
- Inventors
- 44
- Latest grant
- 30 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Mineral bits and mounts30 Apr 2024US 11,970,944 B2Carriere Industrial Supply Limited
- Mineral bits and mounts26 Jan 2021US 10,900,356 B2Carriere Industrial Supply Limited
- Mineral winning pick, pick holder, and combination28 Jul 2020US 10,724,369 B2Esco Group LLC
- Tooth retaining and locking system7 Jan 2020US 10,526,769 B2IHC Holland IE B.V.
- Tapered cutter bit and mounting block for the same5 Nov 2019US 10,465,513 B2
- Cutting tool holding device21 Mar 2024US 2024/0091986 A1Everpads Co., Ltd.
- Tapered cutter bit and mounting block for the same9 Dec 2021US 2021/0381374 A1
- Mineral bits and mounts1 Jul 2021US 2021/0199007 A1Carriere Industrial Supply Limited
- Tapered cutter bit and mounting block for the same27 Feb 2020US 2020/0063555 A1
- Mineral bits and mounts25 Jul 2019US 2019/0226339 A1Carriere Industrial Supply Limited
Most cited
By later US patents
- Cutting-tool mounting for rotary excavating head84US 4,609,227 ARuhrkohle Aktiengesellschaft · 1986
- Mounting means for pick on mining drum vane68US 4,268,089 AWinster Mining Limited · 1981
- Drill bit assembly for releasably retaining a drill bit cutter39US 6,427,791 B1The United States of America as represented by the United States Department of Energy · 2002
- Angular tool and holding block34US 7,108,212 B2Keystone Engineering & Manufacturing Corporation · 2006
- Flighting and tool holder31US 7,338,134 B2Keystone Engineering & Manufacturing Corporation · 2008