B25D 2250/291
Tools having three or more parallel bits
Official title: Tools having three or more parallel bits, e.g. needle guns
B25D2250/291 (Tools having three or more parallel bits) appears on 34 US grants and 20 published applications in this corpus.
Search patents in B25D- Granted patents
- 34
- Published applications
- 20
- Assignees
- 23
- Inventors
- 65
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compact mechanical waveguides for impact devices9 Sep 2025US 12,409,540 B2University of Florida Research Foundation, Inc.
- Method for producing silicon fragments24 Dec 2024US 12,172,170 B2Wacker Chemie AG
- Universal quick-change adapter5 Nov 2024US 12,134,175 B2
- Bullet-carried rust removal mechanism and rust removal device23 Jul 2024US 12,042,905 B2LiDuo JQR Group Co. Ltd
- Pneumatic tool structure capable of isolating shock and releasing pressure29 Mar 2022US 11,285,597 B2
- Electric needle scaler and tool holder14 May 2026US 2026/0131361 A1Makita Corporation
- Electric needle scaler14 May 2026US 2026/0131362 A1Makita Corporation
- Compact mechanical waveguides for impact devices13 Feb 2025US 2025/0050487 A1University of Florida Research Foundation, Inc.
- Vibration reducing structure of pneumatic impact tool20 Jul 2023US 2023/0226678 A1Storm Pneumatic Tool Co., Ltd.
- Method for producing silicon fragments6 Oct 2022US 2022/0314228 A1Wacker Chemie AG
Most cited
By later US patents
- Apparatus for reflex-percussive cutting of concrete etc.37US 5,066,070 A1991
- Method of peening and portable peening gun23US 3,937,055 AThe United States of America as represented by the United States National Aeronautics and Space Administration · 1976
- Pneumatically driven descaling tools21US 5,251,367 AEquipment Development Company, Inc. · 1993
- Percussion device20US 4,723,610 AVon Arx AG · 1988
- Compressed-air-operated percussion mechanism18US 6,152,245 A2000