H03H 7/40
Automatic matching of load impedance to source impedance
H03H7/40 (Automatic matching of load impedance to source impedance) appears on 1,054 US grants and 1,094 published applications in this corpus.
Search patents in H03H- Granted patents
- 1,054
- Published applications
- 1,094
- Assignees
- 368
- Inventors
- 1,482
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 1 |
| 2002 | 11 | 12 |
| 2003 | 12 | 12 |
| 2004 | 6 | 6 |
| 2005 | 13 | 15 |
| 2006 | 10 | 16 |
| 2007 | 12 | 19 |
| 2008 | 10 | 40 |
| 2009 | 16 | 37 |
| 2010 | 21 | 44 |
| 2011 | 26 | 53 |
| 2012 | 38 | 110 |
| 2013 | 64 | 71 |
| 2014 | 66 | 77 |
| 2015 | 81 | 72 |
| 2016 | 76 | 73 |
| 2017 | 97 | 69 |
| 2018 | 71 | 46 |
| 2019 | 71 | 65 |
| 2020 | 63 | 70 |
| 2021 | 46 | 40 |
| 2022 | 49 | 28 |
| 2023 | 40 | 38 |
| 2024 | 27 | 35 |
| 2025 | 35 | 26 |
| 2026 | 26 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- RF impedance matching network with clamping circuit15 Sep 2026US 12,738,917 B2ASM America, Inc.
- Method and apparatus to reconfigure load impedance elements associated with a vehicle8 Sep 2026US 12,728,731 B2Gravic, Inc.
- VHF-UHF harmonic load pull tuner8 Sep 2026US 12,732,164 B1
- Impedance matching circuit, power supply apparatus, and plasma processing equipment including same18 Aug 2026US 12,712,153 B2Semes Co., Ltd.
- Systems and methods for impedance matching in plasma creation at atmospheric pressure11 Aug 2026US 12,706,583 B2Surfx Technologies LLC
- Rf impedance matching network with series-connected diode switches1 Oct 2026US 2026/0302137 A1ASM America, Inc.
- Impedance adjustment circuit24 Sep 2026US 2026/0291461 A1Industrial Cooperation Foundation Jeonbuk National University
- Inter-period control system for plasma power delivery system and method of operating same10 Sep 2026US 2026/0269186 A1AES Global Holdings PTE Ltd.
- Tunable impedance matching methods and circuits for protection against side-channel attacks27 Aug 2026US 2026/0254432 A1APPLIED Materials.Inc.
- Systems and Methods for Radiofrequency Signal Generator-Based Control of Impedance Matching System20 Aug 2026US 2026/0245834 A1Lam Research Corporation
Most cited
By later US patents
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- Wireless energy transfer converters438US 8,497,601 B2WiTricity Corporation · 2013
- Wireless energy transfer using repeater resonators365US 8,729,737 B2WiTricity Corporation · 2014
- Frequency monitoring to detect plasma process abnormality329US 8,174,400 B2APPLIED Materials.Inc. · 2012