B23H 7/18
For maintaining or controlling the desired spacing between electrode and workpiece
Official title: for maintaining or controlling the desired spacing between electrode and workpiece
B23H7/18 (For maintaining or controlling the desired spacing between electrode and workpiece) appears on 143 US grants and 67 published applications in this corpus.
Search patents in B23H- Granted patents
- 143
- Published applications
- 67
- Assignees
- 52
- Inventors
- 237
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 4 | 1 |
| 2004 | 4 | 4 |
| 2005 | 3 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 1 | 4 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 4 | 6 |
| 2014 | 4 | 5 |
| 2015 | 1 | 5 |
| 2016 | 4 | 1 |
| 2017 | 6 | 4 |
| 2018 | 1 | 9 |
| 2019 | 6 | 2 |
| 2020 | 5 | 4 |
| 2021 | 2 | 2 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Process control for electrical discharge machining apparatus39US 4,361,745 ARaycon Corporation · 1982
- Methods and apparatus for electrically machining a work piece25US 4,159,407 ARolls-Royce (1971) Limited · 1979
- Electrochemical machining method and apparatus24US 6,835,299 B1Ultra Systems Limited · 2004
- Electric discharge machining method and device with preset electrode feed23US 4,049,942 AAteliers des Charmilles S.A. · 1977
- Electrical discharge apparatus for producing a textured finish on a conductive surface23US 5,034,589 ASarclad International Limited · 1991