E21B 1/32
Working with pulses
Official title: working with pulses
E21B1/32 (Working with pulses) appears on 6 US grants and 5 published applications in this corpus.
Search patents in E21B- Granted patents
- 6
- Published applications
- 5
- Assignees
- 9
- Inventors
- 20
- Latest grant
- 23 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Support features for extendable elements of a downhole tool body, tool bodies having such support features and related methods23 Aug 2022US 11,421,478 B2Baker Hughes Holdings LLC
- Pulse generating device and a rock drilling rig comprising such a device13 May 2014US 8,720,602 B2Atlas Copco Rock Drills AB
- Percussion device22 Nov 2011US 8,061,434 B2Sandvik Mining and Construction Oy
- Rotary percussive drilling device29 Jul 2008US 7,404,458 B2Sandvik Mining and Construction Lyon SAS
- Percussive tool1 Sep 1987US 4,690,225 AInstitut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk SSSR
- Earth Drilling Device16 Oct 2025US 2025/0320780 A1TRACTO-TECHNIK GmbH & Co. KG
- Support features for extendable elements of a downhole tool body, tool bodies having such support features and related methods29 Jun 2017US 2017/0183914 A1Baker Hughes Incorporated
- Pulse generating device and a rock drilling rig comprising such a device6 Jan 2011US 2011/0000695 A1Atlas Copco Rock Drills AB
- Percussion Device29 Jan 2009US 2009/0025948 A1Sandvik Mining and Construction Oy
- Rotary percussive drilling device21 Sep 2006US 2006/0207800 A1Sandvik Tamrock Secoma SAS
Most cited
By later US patents
- Percussive tool12US 4,690,225 AInstitut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk SSSR · 1987
- Pulse generating device and a rock drilling rig comprising such a device3US 8,720,602 B2Atlas Copco Rock Drills AB · 2014
- Hammer device2US 3,973,633 AAtlas Copco Aktiebolag · 1976
- Percussion device2US 8,061,434 B2Sandvik Mining and Construction Oy · 2011
- Support features for extendable elements of a downhole tool body, tool bodies having such support features and related methods1US 11,421,478 B2Baker Hughes Holdings LLC · 2022