H03K 17/601
Using transformer coupling
Official title: {using transformer coupling (H03K17/61 takes precedence)}
H03K17/601 (Using transformer coupling) appears on 88 US grants and 20 published applications in this corpus.
Search patents in H03K- Granted patents
- 88
- Published applications
- 20
- Assignees
- 56
- Inventors
- 113
- Latest grant
- 28 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 9 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 4 | 8 |
| 2021 | 4 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Semiconductor device and load control system12 Apr 2022US 11,303,206 B2Rohm Co., Ltd.
- Power Contact Health Assessor Apparatus and Method15 Feb 2024US 2024/0055195 A1Arc Suppression Technologies
- Darlington transistor drive circuit, method and switching power supply management chip21 Sep 2023US 2023/0299766 A1Fremont Micro Devices Corporation
- Power Contact Health Assessor Apparatus and Method12 May 2022US 2022/0148822 A1Arc Suppression Technologies
- Power Contact Fault Clearing Device10 Feb 2022US 2022/0044882 A1Arc Suppression Technologies
- Power Contact Health Assessor Apparatus and Method10 Jun 2021US 2021/0173538 A1Arc Suppression Technologies
Most cited
By later US patents
- Compact solid state klystron power supply67US 5,933,335 ASiemens Medical Systems, Inc. · 1999
- Compact solid state klystron power supply50US 5,930,125 ASiemens Medical Systems, Inc. · 1999
- Isolated semiconductor gate control circuit36US 4,052,623 AGeneral Electric Company · 1977
- Zero-current a.c. switching system33US 4,670,810 AElectronic Instrument & Specialty Corp. · 1987
- High speed transistor switching circuit27US 4,410,810 AGould Inc. · 1983