G05F 3/30
Regulators using the difference between the base-emitter voltages of two bipolar transistors
Official title: Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities (G05F3/26 takes precedence)
G05F3/30 (Regulators using the difference between the base-emitter voltages of two bipolar transistors) appears on 1,405 US grants and 1,093 published applications in this corpus.
Search patents in G05F- Granted patents
- 1,405
- Published applications
- 1,093
- Assignees
- 490
- Inventors
- 2,113
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 14 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 7 | 0 |
| 1986 | 17 | 0 |
| 1987 | 13 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 9 | 0 |
| 1991 | 13 | 0 |
| 1992 | 18 | 0 |
| 1993 | 12 | 0 |
| 1994 | 16 | 0 |
| 1995 | 18 | 0 |
| 1996 | 10 | 0 |
| 1997 | 13 | 0 |
| 1998 | 28 | 0 |
| 1999 | 24 | 0 |
| 2000 | 26 | 0 |
| 2001 | 41 | 2 |
| 2002 | 30 | 32 |
| 2003 | 45 | 31 |
| 2004 | 28 | 27 |
| 2005 | 38 | 46 |
| 2006 | 46 | 42 |
| 2007 | 51 | 63 |
| 2008 | 33 | 58 |
| 2009 | 52 | 79 |
| 2010 | 52 | 59 |
| 2011 | 58 | 55 |
| 2012 | 45 | 36 |
| 2013 | 46 | 54 |
| 2014 | 52 | 44 |
| 2015 | 41 | 52 |
| 2016 | 58 | 38 |
| 2017 | 46 | 19 |
| 2018 | 39 | 38 |
| 2019 | 45 | 29 |
| 2020 | 45 | 44 |
| 2021 | 34 | 36 |
| 2022 | 35 | 34 |
| 2023 | 42 | 49 |
| 2024 | 35 | 50 |
| 2025 | 38 | 50 |
| 2026 | 25 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bandgap reference circuit with leakage current compensation6 Oct 2026US 12,754,583 B2Richtek Technology Corporation
- Bandgap device and start-up circuit thereof15 Sep 2026US 12,736,994 B2Faraday Technology Corp.
- Band gap power supply circuit8 Sep 2026US 12,730,471 B2Mitsubishi Electric Corporation
- Switched-capacitor fast start-up scheme for bandgap circuits1 Sep 2026US 12,724,444 B2QUALCOMM Incorporated
- Piecewise compensation for voltage reference temperature drift11 Aug 2026US 12,706,611 B2Texas Instruments Incorporated
- Circuits and methods for reliable startup of bandgap reference circuits13 Aug 2026US 2026/0236049 A1EM Microelectronic-Marin SA
- Bandgap reference circuit with startup circuit for ultra-low power consumption under high-temperature conditions13 Aug 2026US 2026/0236054 A1Guangdong University of Technology
- Device with a Differential Output Stage13 Aug 2026US 2026/0238203 A1TDK-Micronas GmbH
- Device, system and methods for a temperature compensated current reference30 Jul 2026US 2026/0219700 A1Microchip Technology Incorporated
- Current-controlled oscillator-based ripple reduction loop for bandgap reference16 Jul 2026US 2026/0205061 A1Korea Advanced Institute of Science and Technology
Most cited
By later US patents
- CMOS bandgap voltage reference100US 6,150,872 ALucent Technologies Inc. · 2000
- BiCMOS devices97US 5,856,695 AHarris Corporation · 1999
- Band gap reference using a low voltage power supply85US 6,031,365 AVantis Corporation · 2000
- Temperature compensated constant-voltage circuit and temperature compensated constant-current circuit80US 5,430,395 ATexas Instruments Incorporated · 1995
- Voltage regulator for field programmable gate arrays77US 5,336,986 ACrosspoint Solutions, Inc. · 1994