B23H 7/20
For program control
Official title: for program control, e.g. adaptive
B23H7/20 (For program control) appears on 288 US grants and 254 published applications in this corpus.
Search patents in B23H- Granted patents
- 288
- Published applications
- 254
- Assignees
- 74
- Inventors
- 386
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 5 | 3 |
| 2003 | 7 | 1 |
| 2004 | 7 | 7 |
| 2005 | 4 | 3 |
| 2006 | 5 | 3 |
| 2007 | 3 | 2 |
| 2008 | 1 | 7 |
| 2009 | 3 | 3 |
| 2010 | 2 | 8 |
| 2011 | 1 | 1 |
| 2012 | 2 | 11 |
| 2013 | 8 | 13 |
| 2014 | 9 | 13 |
| 2015 | 6 | 18 |
| 2016 | 16 | 15 |
| 2017 | 15 | 18 |
| 2018 | 16 | 29 |
| 2019 | 24 | 14 |
| 2020 | 22 | 15 |
| 2021 | 8 | 17 |
| 2022 | 17 | 9 |
| 2023 | 16 | 22 |
| 2024 | 7 | 8 |
| 2025 | 10 | 10 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Multiwire electric discharge machine and multiwire electric discharge machining system24 Feb 2026US 12,558,733 B2Mitsubishi Electric Corporation
- Automated iterative electrode fabrication for pulsed electrochemical machining18 Nov 2025US 12,472,571 B2ROLLS-ROYCE plc
- Wire electric discharge machine, correction device, and correction method4 Nov 2025US 12,459,043 B2Fanuc Corporation
- System and method for controlling a wire electric discharge machine19 Aug 2025US 12,390,871 B2Mitsubishi Electric Corporation
- Wire electrical discharge machining apparatus, wire electrical discharge machining method, and wafer manufacturing method24 Sep 2026US 2026/0284764 A1Mitsubishi Electric Corporation
- Method and system for controlling machining accuracy of wire electrochemical trimming for complex profile2 Apr 2026US 2026/0091438 A1Nanjing University of Aeronautics and Astronautics
- Wire electrical discharge machining equipment for different workpiece heights5 Feb 2026US 2026/0034597 A1Accutex Technologies Co., Ltd.
- Electrical discharge machining equipment and method with equidistantly triggering discharge13 Nov 2025US 2025/0345871 A1National Taiwan Normal University
- System and method for calibrating a machining system2 Oct 2025US 2025/0306562 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Adaptive control system and method for electrical discharge machining39US 4,071,729 AColt Industries Operating Corp. · 1978
- Process control for electrical discharge machining apparatus39US 4,361,745 ARaycon Corporation · 1982
- Method and apparatus for predicting a characteristic of a product attribute formed by a machining process using a model of the process35US 6,850,874 B1United Technologies Corporation · 2005
- Electric spark machine29US 5,248,867 AMitsubishi Denki Kabushiki Kaisha · 1993
- Device and process for electrical-discharge machining of a three-dimensional cavity with a thin rotating tool electrode27US 5,354,961 ACharmilles Technologies S.A. · 1994