H03F 2203/5021
The source follower has a controlled source circuit
Official title: the source follower has a controlled source circuit
H03F2203/5021 (The source follower has a controlled source circuit) appears on 26 US grants and 20 published applications in this corpus.
Search patents in H03F- Granted patents
- 26
- Published applications
- 20
- Assignees
- 22
- Inventors
- 34
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 0 |
| 2009 | 2 | 4 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Switched emitter follower circuit19 Sep 2023US 11,764,800 B2Nippon Telegraph and Telephone Corporation
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- Power Supply Circuit And Circuit Device9 Jul 2026US 2026/0196972 A1Seiko Epson Corporation
- Push-pull buffer circuit26 Sep 2024US 2024/0322825 A1Texas Instruments Incorporated
- Push-pull buffer circuit29 Feb 2024US 2024/0072801 A1Texas Instruments Incorporated
- Fast-transient buffer7 Dec 2023US 2023/0396246 A1Mediatek Inc.
- Switched Emitter Follower Circuit11 May 2023US 2023/0141476 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Voltage buffer for capacitive loads14US 7,002,401 B2SanDisk Corporation · 2006
- Power amplifier13US 5,359,295 APioneer Electronic Corporation · 1994
- FET buffer amplifier11US 5,155,449 AKikusui Electronics Corporation · 1992
- Amplifier system having a constant current regulating unit10US 5,874,858 AMitsumi Electric Co., Ltd. · 1999
- Differential amplifier, digital-to-analog converter and display device7US 7,459,967 B2NEC Corporation · 2008