H03D 7/1433
Using bipolar transistors
Official title: {using bipolar transistors (H03D7/145 takes precedence)}
H03D7/1433 (Using bipolar transistors) appears on 447 US grants and 318 published applications in this corpus.
Search patents in H03D- Granted patents
- 447
- Published applications
- 318
- Assignees
- 211
- Inventors
- 695
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 15 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 23 | 0 |
| 2001 | 20 | 12 |
| 2002 | 25 | 31 |
| 2003 | 24 | 22 |
| 2004 | 17 | 30 |
| 2005 | 19 | 24 |
| 2006 | 30 | 33 |
| 2007 | 16 | 27 |
| 2008 | 20 | 25 |
| 2009 | 26 | 22 |
| 2010 | 26 | 21 |
| 2011 | 14 | 16 |
| 2012 | 22 | 8 |
| 2013 | 18 | 1 |
| 2014 | 7 | 5 |
| 2015 | 6 | 3 |
| 2016 | 6 | 6 |
| 2017 | 5 | 4 |
| 2018 | 4 | 3 |
| 2019 | 4 | 3 |
| 2020 | 7 | 6 |
| 2021 | 4 | 5 |
| 2022 | 5 | 5 |
| 2023 | 8 | 4 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Power mixer, radio frequency circuit, device and equipment30 Sep 2025US 12,431,930 B2Changqing Barrot Technology Limited
- Distributed circuit21 Jan 2025US 12,206,373 B2Nippon Telegraph and Telephone Corporation
- Electrical circuit, pulse radar device, method for providing an output signal, and radar method26 Mar 2024US 11,940,552 B2Infineon Technologies AG
- LO leakage suppression in frequency conversion circuits12 Dec 2023US 11,843,361 B2International Business Machines Corporation
- Frequency mixing3 Oct 2023US 11,777,449 B1QUALCOMM Incorporated
- Distributed double balanced mixer27 Mar 2025US 2025/0105788 A1Nippon Telegraph and Telephone Corporation
- Oscillator Leakage Calibration20 Mar 2025US 2025/0096839 A1QUALCOMM Incorporated
- Power mixer, radio frequency circuit, device and equipment18 May 2023US 2023/0155619 A1Chongqing Barrot Technology Limited
- Traveling wave mixer4 May 2023US 2023/0140378 A1Keysight Technologies, Inc.
- Subharmonic Detection and Cancelation2 Mar 2023US 2023/0061672 A1Texas Instruments Incorporated
Most cited
By later US patents
- RF amplifier, RF mixer and RF receiver265US 6,026,286 ACarleton University · 2000
- Power amplification using a direct-upconverting quadrature mixer topology174US 6,307,894 B2Conexant Systems, Inc. · 2001
- Interface between SAW filter and Gilbert cell mixer132US 5,515,014 AAT&T Corp. · 1996
- Image reject mixer, circuit, and method for image rejection131US 6,226,509 B1Nortel Networks Limited · 2001
- I/Q quadraphase modulator circuit126US 5,574,755 APhilips Electronics North America Corporation · 1996