B28D 1/26
Working stone or stone-like materials: by impact tools
Official title: by impact tools, e.g. by chisels or other tools having a cutting edge (portable percussive tools B25D)
B28D1/26 (Working stone or stone-like materials: by impact tools) appears on 120 US grants and 96 published applications in this corpus.
Search patents in B28D- Granted patents
- 120
- Published applications
- 96
- Assignees
- 60
- Inventors
- 199
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 0 | 2 |
| 2003 | 1 | 6 |
| 2004 | 6 | 7 |
| 2005 | 5 | 5 |
| 2006 | 5 | 11 |
| 2007 | 6 | 3 |
| 2008 | 3 | 9 |
| 2009 | 1 | 1 |
| 2010 | 3 | 4 |
| 2011 | 7 | 5 |
| 2012 | 5 | 4 |
| 2013 | 2 | 7 |
| 2014 | 4 | 4 |
| 2015 | 6 | 3 |
| 2016 | 1 | 3 |
| 2017 | 4 | 5 |
| 2018 | 1 | 3 |
| 2019 | 4 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 0 | 0 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tool with protruding structure2 Sep 2025US 12,403,578 B2Hilti Aktiengesellschaft
- Device and method for adaptive robotic stone surfacing26 Aug 2025US 12,397,472 B2Technion Research & Development Foundation Limited
- Hammering device and a method for operating a hammering device1 Apr 2025US 12,264,454 B2Fractum ApS
- Drill for chiseling stone4 Jul 2023US 11,691,204 B2Hilti Aktlengesellschaft
- Flat chisel13 Jun 2023US 11,673,246 B2Hilti Aktiengesellschaft
- Chisel with a Long Service Life and Method for Producing Such a Chisel2 Jul 2026US 2026/0183918 A1Hilti Aktiengesellschaft
- Apparatus and method for artificially ageing blocks28 May 2026US 2026/0145363 A1
- A hammering device and a method for operating a hammering device9 Jan 2025US 2025/0012045 A1Fractum ApS
- Tool with protruding structure9 Nov 2023US 2023/0356378 A1Hilti Aktiengesellschaft
- Exchangeable Wearing Part For an Arc Welding Torch, Holder For An Exchangeable Wearing Part, And An Arc Welding Torch Having Such A Corresponding Wearing Part and Holder22 Jun 2023US 2023/0191524 A1Sks Welding Systems GmbH
Most cited
By later US patents
- Feeding device of a concrete block splitting apparatus42US 4,114,773 AKatsura Machine Co., Ltd. · 1978
- Non-linear electromagnetic vibration device37US 4,749,891 A1988
- Apparatus for reflex-percussive cutting of concrete etc.37US 5,066,070 A1991
- Masonry punch34US 4,848,309 A1989
- Block splitting assembly and method34US 6,918,715 B2Anchor Wall Systems, Inc. · 2005