H03F 3/3435
Using darlington amplifiers
Official title: {using Darlington amplifiers}
H03F3/3435 (Using darlington amplifiers) appears on 68 US grants and 41 published applications in this corpus.
Search patents in H03F- Granted patents
- 68
- Published applications
- 41
- Assignees
- 52
- Inventors
- 94
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 0 |
| 2004 | 1 | 3 |
| 2005 | 3 | 4 |
| 2006 | 5 | 4 |
| 2007 | 5 | 6 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 5 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 5 |
| 2013 | 2 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 4 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Darlington pair bipolar junction transistor sensor26 Nov 2024US 12,154,899 B2International Business Machines Corporation
- Ion detector current converter30 Jan 2024US 11,887,829 B2Thermo Fisher Scientific (Bremen) GmbH
- Variable gain amplifier15 Oct 2019US 10,447,220 B2BAE Systems Information and Electronic Systems Integration Inc.
- Boost circuit for use in power amplifier20 Nov 2018US 10,135,397 B2RichWave Technology Corp.
- Transconductance amplifier having low distortion27 Mar 2018US 9,929,705 B2Fluke Corporation
- Common-mode stabilization of high-frequency differential distributed driver amplifier26 Mar 2026US 2026/0088784 A1Ciena Corporation
- Darlington pair bipolar junction transistor sensor20 Apr 2023US 2023/0123050 A1International Business Machines Corporation
- Ion detector current converter12 May 2022US 2022/0148869 A1Thermo Fisher Scientific (Bremen) GmbH
- Variable gain amplifier12 Sep 2019US 2019/0280661 A1BAE Systems Information and Electronic Systems Integration Inc.
- Boost circuit for use in power amplifier31 May 2018US 2018/0152146 A1RichWave Technology Corp.
Most cited
By later US patents
- Power amplifier module with stable idling current30US 6,731,171 B2Hitachi, Ltd. · 2004
- On-chip temperature compensation circuit for an electronic device24US 7,142,058 B2Freescale Semiconductor, Inc. · 2006
- Twisted pair communicatons line system20US 5,926,509 ACybex Computer Products Corporation · 1999
- HBT direct-coupled low noise wideband microwave amplifier18US 5,398,004 ATRW Inc. · 1995
- VGA signal converter for converting VGA color signals to VGA monochrome signals17US 5,576,723 ACybex Computer Products Corporation · 1996