B23H 7/26
Apparatus for moving or positioning electrode relatively to workpiece
Official title: Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
B23H7/26 (Apparatus for moving or positioning electrode relatively to workpiece) appears on 505 US grants and 350 published applications in this corpus.
Search patents in B23H- Granted patents
- 505
- Published applications
- 350
- Assignees
- 219
- Inventors
- 919
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 9 | 0 |
| 1978 | 8 | 0 |
| 1979 | 11 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 14 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 12 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 2 |
| 2002 | 17 | 11 |
| 2003 | 11 | 6 |
| 2004 | 21 | 15 |
| 2005 | 9 | 12 |
| 2006 | 9 | 11 |
| 2007 | 8 | 17 |
| 2008 | 8 | 9 |
| 2009 | 9 | 15 |
| 2010 | 6 | 21 |
| 2011 | 7 | 5 |
| 2012 | 16 | 8 |
| 2013 | 9 | 13 |
| 2014 | 8 | 10 |
| 2015 | 7 | 23 |
| 2016 | 12 | 12 |
| 2017 | 15 | 19 |
| 2018 | 14 | 23 |
| 2019 | 19 | 25 |
| 2020 | 16 | 22 |
| 2021 | 12 | 14 |
| 2022 | 20 | 18 |
| 2023 | 12 | 15 |
| 2024 | 7 | 9 |
| 2025 | 13 | 8 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electric discharge machining apparatus and method for fixing power conductor in electric discharge machining apparatus28 Jul 2026US 12,691,515 B2Sodick Co., Ltd.
- Wire electrical discharge machine16 Jun 2026US 12,654,246 B2Agie Charmilles SA
- Micro-electric discharge milling machine with spark control10 Mar 2026US 12,569,923 B1King Saud University
- Follow-up swing head type large taper wire cutting device3 Mar 2026US 12,564,894 B2Changzhou Institute of Technology
- Opening maching apparatus for heat transfer tube, method of forming opening in tube wall of heat transfer tube using same, and method of removing foreign material through same opening of same heat transfer tube2 Dec 2025US 12,485,462 B2Doosan Enerbility Co., Ltd.
- Small-hole electrical discharge machine6 Aug 2026US 2026/0225168 A1Elenix, Inc.
- Device and method for electrochemical machining6 Aug 2026US 2026/0225169 A1MTU Aero Engines AG
- Surface treatment method and surface treatment device16 Jul 2026US 2026/0199994 A1Yasunaga Corporation
- Ultrasonic measurement of electrode depth while electrical discharge machining2 Jul 2026US 2026/0183855 A1GE Infrastructure Technology LLC
- Method and system for manufacturing electrical interface comprising array of thin pins2 Jul 2026US 2026/0190240 A1CompTake Technology Inc.
Most cited
By later US patents
- Position feedback control system217US 6,519,860 B1Sandia Corporation · 2003
- Four-axis ECM machine and method of operation51US 5,149,405 ALehr Precision, Inc. · 1992
- Fastening device for a tool or workpiece50US 5,634,757 A1997
- Electric discharge machining apparatus49US 6,225,589 B12001
- Machining center47US 4,596,066 AInoue-Japax Research Incorporated · 1986