B28D 1/14
Working stone or stone-like materials: by boring or drilling
Official title: by boring or drilling (rotary drilling machines B23B; {tools for drilling machines B23B51/00}; portabe percussive machines B25D; {rotary drilling machines for mining or quarrying E21B3/00})
B28D1/14 (Working stone or stone-like materials: by boring or drilling) appears on 220 US grants and 250 published applications in this corpus.
Search patents in B28D- Granted patents
- 220
- Published applications
- 250
- Assignees
- 135
- Inventors
- 484
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 5 |
| 2003 | 7 | 7 |
| 2004 | 5 | 5 |
| 2005 | 4 | 9 |
| 2006 | 7 | 11 |
| 2007 | 3 | 13 |
| 2008 | 11 | 10 |
| 2009 | 11 | 10 |
| 2010 | 3 | 10 |
| 2011 | 6 | 8 |
| 2012 | 2 | 7 |
| 2013 | 5 | 11 |
| 2014 | 5 | 8 |
| 2015 | 9 | 11 |
| 2016 | 13 | 12 |
| 2017 | 6 | 22 |
| 2018 | 7 | 13 |
| 2019 | 14 | 9 |
| 2020 | 11 | 9 |
| 2021 | 8 | 12 |
| 2022 | 7 | 14 |
| 2023 | 10 | 8 |
| 2024 | 9 | 13 |
| 2025 | 9 | 7 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Drilling tool18 Aug 2026US 12,708,969 B2Robert Bosch GmbH
- Drill bit for percussion drilling or impact drilling use for cutting reinforcing steel in concrete7 Apr 2026US 12,594,656 B2Heller Tools GmbH
- Liquid circulation system and boring system including the same31 Mar 2026US 12,589,441 B2Kabushiki Kaisha Miyanaga
- One-piece cutting head for a drill bit17 Feb 2026US 12,551,954 B2Black & Decker Inc.
- Weep-hole drilling2 Dec 2025US 12,486,723 B2Concore BV
- Masonry drill having five blades2 Jul 2026US 2026/0183848 A1Hilti Aktiengesellschaft
- Masonry drill head7 May 2026US 2026/0124787 A1Ceratizit Hard Material Solutions S.A R.L.
- Suspended drilling and bolt mounting system23 Apr 2026US 2026/0110249 A1Lenovo New Vision (Jiangsu) Equipment Service Co., Ltd
- Radioactive liquid waste removal system19 Feb 2026US 2026/0051417 A1Korea Hydro & Nuclear Power Co., Ltd.
- Method for operating a power tool, and power tool27 Nov 2025US 2025/0360571 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Method and a device for sensing the distance between a first object and a second object276US 5,942,975 A1999
- Safety circuit for hand tools, and method for safe operation thereof105US 4,722,021 ARobert Bosch GmbH · 1988
- Drill bit for glass and ceramic structures42US 4,483,108 A1984
- Tool bit with carrier member and cutting member36US 5,735,648 AHilti Aktiengesellschaft · 1998
- Eyeglass lens processing apparatus36US 6,790,124 B2Nidek Co., Ltd. · 2004