H03F 3/303
Using opamps as driving stages
Official title: {using opamps as driving stages}
H03F3/303 (Using opamps as driving stages) appears on 121 US grants and 118 published applications in this corpus.
Search patents in H03F- Granted patents
- 121
- Published applications
- 118
- Assignees
- 81
- Inventors
- 224
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 2 |
| 2003 | 4 | 3 |
| 2004 | 5 | 4 |
| 2005 | 4 | 5 |
| 2006 | 4 | 1 |
| 2007 | 2 | 3 |
| 2008 | 1 | 0 |
| 2009 | 2 | 5 |
| 2010 | 3 | 1 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 3 |
| 2016 | 1 | 5 |
| 2017 | 5 | 3 |
| 2018 | 4 | 6 |
| 2019 | 3 | 5 |
| 2020 | 9 | 8 |
| 2021 | 8 | 7 |
| 2022 | 7 | 14 |
| 2023 | 10 | 13 |
| 2024 | 9 | 8 |
| 2025 | 6 | 6 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Efficient common mode suppression for transmission systems31 Mar 2026US 12,592,670 B2Avago Technologies International Sales Pte. Limited
- Interpolation amplifier and source driver comprising the same24 Mar 2026US 12,586,503 B2Anapass Inc.
- Transimpedance amplifier circuit17 Mar 2026US 12,580,539 B2Sumitomo Electric Industries, Ltd.
- Operational amplifier, chip, and electronic device27 Jan 2026US 12,537,492 B2Huawei Technologies Co., Ltd.
- Semiconductor device30 Dec 2025US 12,512,418 B2Rohm Co., Ltd.
- Differential amplifier and data driving device6 Aug 2026US 2026/0230050 A1Lx Semicon Co., Ltd.
- System and methods for efficient common mode suppression for transmission systems16 Jul 2026US 2026/0205068 A1Avago Technologies International Sales Pte. Limited
- Source driver including 1-bit extended interpolation amplifier11 Jun 2026US 2026/0163539 A1Samsung Electronics Co., Ltd.
- Current mirror operational transconductance amplifier9 Apr 2026US 2026/0100685 A1Semiconductor Components Industries, LLC
- Class ab amplifier19 Mar 2026US 2026/0081570 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Amplifying apparatus80US 8,164,388 B2Yamaha Corporation · 2012
- Amplifier circuit and liquid-crystal display unit using the same38US 6,480,178 B1Kabushiki Kaisha Toshiba · 2002
- Push-pull driver, a transmitter, a receiver, a transceiver, an integrated circuit, a method for generating a signal at an output38US 9,634,666 B2Intel IP Corporation · 2017
- Rail-to-rail input/output operational amplifier and method36US 6,150,883 ABurr-Brown Corporation · 2000
- Full range input/output comparator31US 5,142,244 AHarris Corporation · 1992