E21B 10/445
Percussion type
Official title: {percussion type, e.g. for masonry}
E21B10/445 (Percussion type) appears on 106 US grants and 45 published applications in this corpus.
Search patents in E21B- Granted patents
- 106
- Published applications
- 45
- Assignees
- 29
- Inventors
- 150
- Latest grant
- 27 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 5 |
| 2003 | 3 | 6 |
| 2004 | 2 | 2 |
| 2005 | 3 | 1 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 4 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 2 | 0 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 1 |
| 2023 | 3 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hole opener27 Aug 2024US 12,071,816 B2Precise Drilling Components Ltd
- Hole opener25 Jun 2024US 12,018,532 B2Precise Drilling Components Ltd
- Suction adapter30 May 2023US 11,660,717 B2Robert Bosch GmbH
- Manufacturing process, tool stand, and drill bit14 Feb 2023US 11,577,429 B2Hilti Aktiengesellschaft
- Spiral impact drilling machine applicable to rock and soil and construction method17 Jan 2023US 11,555,351 B2Dalian University of Technology
- Masonry drill having five blades2 Jul 2026US 2026/0183848 A1Hilti Aktiengesellschaft
- Hole opener15 Jun 2023US 2023/0184040 A1Precise Drilling Components Ltd
- Spiral impact drilling machine applicable to rock and soil and construction method19 May 2022US 2022/0154532 A1Dalian University of Technology
- Drilling Device19 Aug 2021US 2021/0252612 A1Hilti Aktiengesellschaft
- Manufacturing Process, Tool Stand, and Drill Bit27 May 2021US 2021/0154728 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Rotary drill bit with improved cutter and seal protection130US 5,452,771 ADresser Industries, Inc. · 1995
- Rotary drill bit with improved cutter and seal protection122US 5,518,077 ADresser Industries, Inc. · 1996
- Drill bits97US 5,464,068 A1995
- Drill bit blade for masonry and rock drill44US 4,984,944 AVermont American Corporation · 1991
- Cutting tools for drilling concrete, aggregate, masonry or the like materials41US 6,345,940 B2Black & Decker Inc. · 2002