E21C 35/193
Using bolts as main fixing elements
Official title: using bolts as main fixing elements
E21C35/193 (Using bolts as main fixing elements) appears on 117 US grants and 92 published applications in this corpus.
Search patents in E21C- Granted patents
- 117
- Published applications
- 92
- Assignees
- 52
- Inventors
- 157
- Latest grant
- 18 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 5 |
| 2006 | 3 | 3 |
| 2007 | 2 | 1 |
| 2008 | 5 | 9 |
| 2009 | 3 | 5 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 3 |
| 2013 | 4 | 8 |
| 2014 | 5 | 4 |
| 2015 | 5 | 12 |
| 2016 | 11 | 7 |
| 2017 | 5 | 5 |
| 2018 | 6 | 10 |
| 2019 | 7 | 6 |
| 2020 | 9 | 2 |
| 2021 | 4 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Milling tool18 Feb 2025US 12,227,907 B2
- Mineral bits and mounts30 Apr 2024US 11,970,944 B2Carriere Industrial Supply Limited
- Tool system13 Dec 2022US 11,524,303 B2Betek GmbH & Co. KG
- Rotor bit removal device21 Dec 2021US 11,203,103 B2Caterpillar Paving Products Inc.
- Pick having a supporting element with a centering extension28 Sep 2021US 11,131,188 B2Betek GmbH & Co. KG
- Tooth formation and tooth pick formation20 Jun 2024US 2024/0198348 A1Mmd Group Limited
- Cutting tool holding device21 Mar 2024US 2024/0091986 A1Everpads Co., Ltd.
- Milling tool4 May 2023US 2023/0138956 A1
- 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
Most cited
By later US patents
- Tool mounting for a cutting tool145US 5,992,405 AThe Sollami Company · 1999
- Wedge arrangements and related means for mounting means, base members, and bits, and combinations thereof, for mining, road working, or earth moving machinery124US 4,337,980 AThe Cincinnati Mine Machinery Company · 1982
- Trenching tool assembly with dual indexing capability119US 5,007,685 AKennametal Inc. · 1991
- Miner cutting bit holding apparatus96US 4,915,455 AJoy Technologies Inc. · 1990
- Cutting-tool mounting for rotary excavating head84US 4,609,227 ARuhrkohle Aktiengesellschaft · 1986