B23H 1/022
For shaping the discharge pulse train
Official title: {for shaping the discharge pulse train (B23H1/024 takes precedence)}
B23H1/022 (For shaping the discharge pulse train) appears on 247 US grants and 122 published applications in this corpus.
Search patents in B23H- Granted patents
- 247
- Published applications
- 122
- Assignees
- 62
- Inventors
- 271
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 3 |
| 2002 | 7 | 5 |
| 2003 | 5 | 4 |
| 2004 | 5 | 5 |
| 2005 | 8 | 6 |
| 2006 | 6 | 4 |
| 2007 | 2 | 7 |
| 2008 | 1 | 8 |
| 2009 | 4 | 2 |
| 2010 | 6 | 11 |
| 2011 | 3 | 4 |
| 2012 | 7 | 4 |
| 2013 | 3 | 5 |
| 2014 | 4 | 5 |
| 2015 | 5 | 9 |
| 2016 | 5 | 6 |
| 2017 | 7 | 2 |
| 2018 | 2 | 5 |
| 2019 | 7 | 6 |
| 2020 | 5 | 5 |
| 2021 | 5 | 6 |
| 2022 | 5 | 3 |
| 2023 | 6 | 3 |
| 2024 | 1 | 1 |
| 2025 | 4 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wire electric discharge machining apparatus7 Jul 2026US 12,673,376 B2Sodick Co., Ltd.
- Method for electrical discharge machining3 Mar 2026US 12,564,893 B2Agie Charmilles SA
- Machining method for high-aspect-ratio model part of ultra-high strength steel for wind tunnel test28 Oct 2025US 12,454,031 B2Chengdu Kaidi Seiko Technology Co., Ltd.
- Method for electrical discharge machining5 Aug 2025US 12,377,482 B2Agie Charmilles SA
- Control device and recording medium encoded with program11 Mar 2025US 12,246,386 B2Fanuc Corporation
- Electrical discharge machining apparatus and method of the same12 Feb 2026US 2026/0042162 A1Highlight Tech Corp.
- Method for machining a multiple material workpiece by electrical discharge machining15 Jan 2026US 2026/0014633 A1Agie Charmilles SA
- Double resistor-capacitor discharge machining system13 Mar 2025US 2025/0083241 A1National Taiwan Normal University
- Method for electrical discharge machining2 May 2024US 2024/0139845 A1Agie Charmilles SA
- Zero Excess Energy Storage Transformer30 Nov 2023US 2023/0387911 A1Sweven Design Ltd.
Most cited
By later US patents
- Electrostatic precipitator power supply69US 4,808,200 ASiemens Aktiengesellschaft · 1989
- Pulse generator spark-erosive metal working32US 4,766,281 AAG fur industrielle Elektronik AGIE Losone bei Locarno · 1988
- Inverter-type power supply circuit for electrical machining26US 4,447,695 AInoue-Japax Research Incorporated · 1984
- Control system and method for electric discharge machining (EDM) using a predetermined portion of each discharge pulse for monitoring22US 3,997,753 A1976
- Process and apparatus for electrical discharge shaping using sequential switching21US 3,974,357 AMitsubishi Denki Kabushiki Kaisha · 1976