B23H 7/04
Apparatus for supplying current to working gap
Official title: Apparatus for supplying current to working gap; Electric circuits specially adapted therefor
B23H7/04 (Apparatus for supplying current to working gap) appears on 229 US grants and 135 published applications in this corpus.
Search patents in B23H- Granted patents
- 229
- Published applications
- 135
- Assignees
- 52
- Inventors
- 249
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 16 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 3 |
| 2004 | 5 | 5 |
| 2005 | 6 | 11 |
| 2006 | 11 | 2 |
| 2007 | 2 | 7 |
| 2008 | 1 | 4 |
| 2009 | 3 | 6 |
| 2010 | 2 | 4 |
| 2011 | 4 | 0 |
| 2012 | 6 | 7 |
| 2013 | 4 | 9 |
| 2014 | 4 | 6 |
| 2015 | 5 | 12 |
| 2016 | 8 | 8 |
| 2017 | 8 | 4 |
| 2018 | 8 | 12 |
| 2019 | 6 | 10 |
| 2020 | 12 | 6 |
| 2021 | 4 | 2 |
| 2022 | 9 | 2 |
| 2023 | 3 | 8 |
| 2024 | 1 | 3 |
| 2025 | 0 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Machine for storing in-machining information and a comparison result7 Jul 2026US 12,673,393 B2Fanuc Corporation
- Method for electrical discharge machining3 Mar 2026US 12,564,893 B2Agie Charmilles SA
- Multiwire electric discharge machine and multiwire electric discharge machining system24 Feb 2026US 12,558,733 B2Mitsubishi Electric Corporation
- Wire electric discharge machining device, and control method and control program therefor6 Feb 2024US 11,890,691 B2Makino Milling Machine Co., Ltd.
- Electrical discharge machining apparatus and electrical discharge machining method with adjustable machining parameters5 Dec 2023US 11,833,603 B2
- Wire electrical discharge machining apparatus, wire electrical discharge machining method, and wafer manufacturing method16 Jul 2026US 2026/0199995 A1Mitsubishi Electric Corporation
- Double resistor-capacitor discharge machining system13 Mar 2025US 2025/0083241 A1National Taiwan Normal University
- Wire electric discharge machine, and control method for wire electric discharge machine15 Aug 2024US 2024/0269757 A1Fanuc Corporayion
- Wire electrical discharge machine, and control method for wire electrical discharge machine15 Aug 2024US 2024/0269758 A1Fanuc Corporation
- Wire electrical discharge machining27 Jun 2024US 2024/0207960 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Wire-cut electric discharge machining method using stored machining instructions28US 4,559,434 AFanuc Corporation · 1985
- Dual input voltage power source for selectively switching between voltage doubler rectification and full-wave rectification functions28US 4,845,607 AFuji Electrochemical Co., Ltd. · 1989
- Process for preparing a building and/or construction material, a polymer modified aqueous dispersion, and use thereof for the preparation of a building and/or construction material25US 4,686,252 ASika AG, vorm. Kaspar Winkler & Co. · 1987
- Wire cut electrical discharge machining apparatus24US 5,306,889 ASodick Co., Ltd. · 1994
- Wire-cut, electric-discharge machining power source21US 4,347,425 AFujitsu Fanuc Limited · 1982