E21C 35/191
For fixing holders
Official title: {for fixing holders}
E21C35/191 (For fixing holders) appears on 118 US grants and 77 published applications in this corpus.
Search patents in E21C- Granted patents
- 118
- Published applications
- 77
- Assignees
- 42
- Inventors
- 126
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 3 |
| 2011 | 4 | 4 |
| 2012 | 1 | 4 |
| 2013 | 1 | 7 |
| 2014 | 6 | 5 |
| 2015 | 6 | 6 |
| 2016 | 6 | 9 |
| 2017 | 7 | 9 |
| 2018 | 6 | 1 |
| 2019 | 8 | 4 |
| 2020 | 5 | 2 |
| 2021 | 7 | 3 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 2 |
| 2025 | 3 | 0 |
| 2026 | 1 | 1 |
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
- 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
- Milling tool18 Feb 2025US 12,227,907 B2
- Bit holder with annular rings6 Feb 2024US 11,891,895 B1The Sollami Company
- Cutter assembly and cutting tool structure5 Mar 2026US 2026/0061504 A1Everpads Co., Ltd.
- Cutting device of self-centering cutter holder11 Jul 2024US 2024/0229378 A1Suzhou Wuyuansu Machinery Manufacturing Co., Ltd
- Circular Cutting Tools With Polycrystalline Diamond Composite (PDC) Cutting Bits7 Mar 2024US 2024/0075542 A1Echidna USA, LLC
- Milling tool4 May 2023US 2023/0138956 A1
- Sheath for a soil working roller3 Feb 2022US 2022/0030755 A1Hamm AG
Most cited
By later US patents
- Bit holders and bit blocks for road milling, mining and trenching equipment163US 6,371,567 B1The Sollami Company · 2002
- Streamlining bit assemblies for road milling, mining and trenching equipment157US 6,685,273 B1The Sollami Company · 2004
- Bit holders and bit blocks for road milling, mining and trenching equipment144US 6,585,326 B2The Sollami Company · 2003
- 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
- Bit and bit holder/block having a predetermined area of failure116US 6,364,420 B1The Sollami Company · 2002