H03H 11/1213
Using transistor amplifiers
Official title: {using transistor amplifiers (H03H11/1204 takes precedence; parallel-T filters H03H11/1295)}
H03H11/1213 (Using transistor amplifiers) appears on 195 US grants and 114 published applications in this corpus.
Search patents in H03H- Granted patents
- 195
- Published applications
- 114
- Assignees
- 118
- Inventors
- 318
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 3 |
| 2002 | 4 | 3 |
| 2003 | 5 | 7 |
| 2004 | 7 | 9 |
| 2005 | 2 | 2 |
| 2006 | 6 | 8 |
| 2007 | 6 | 2 |
| 2008 | 8 | 6 |
| 2009 | 2 | 5 |
| 2010 | 8 | 5 |
| 2011 | 3 | 6 |
| 2012 | 4 | 2 |
| 2013 | 11 | 8 |
| 2014 | 7 | 9 |
| 2015 | 6 | 7 |
| 2016 | 9 | 5 |
| 2017 | 7 | 4 |
| 2018 | 1 | 3 |
| 2019 | 5 | 3 |
| 2020 | 7 | 2 |
| 2021 | 4 | 2 |
| 2022 | 1 | 3 |
| 2023 | 3 | 3 |
| 2024 | 2 | 4 |
| 2025 | 3 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Integrated coupled resonator filtering6 Jan 2026US 12,519,456 B2QuantalRF AG
- Baseband filter for current-mode signal path7 Oct 2025US 12,438,525 B2International Business Machines Corporation
- Active filters and gyrators including cascaded inverters15 Jul 2025US 12,362,729 B2QUALCOMM Incorporated
- System and method for integrated filtering and amplification8 Jul 2025US 12,355,428 B2QuantaIRF AG
- Integrated coupled resonator filtering16 Apr 2026US 2026/0106598 A1QuantalRF AG
- System and method for coupled resonator filtering15 Jan 2026US 2026/0019064 A1QuantalRF AG
- Regulator Circuit, Circuit Device, And Oscillator4 Sep 2025US 2025/0278105 A1Seiko Epson Corporation
- Voltage-mode filters with output impedance neutralization12 Dec 2024US 2024/0413801 A1International Business Machines Corporation
- Integrated coupled resonator filtering7 Mar 2024US 2024/0080007 A1QuantalRF AG
Most cited
By later US patents
- Isolation amplifier with precise timing of signals coupled across isolation barrier109US 4,835,486 ABurr-Brown Corporation · 1989
- Isolation amplifier with precise timing of signals coupled across isolation barrier79US 4,748,419 ABurr-Brown Corporation · 1988
- Filtering variable offset amplifer57US 6,624,688 B2Intel Corporation · 2003
- Adaptive cable equalizer55US 5,978,417 ANational Semiconductor Corporation · 1999
- Wideband monolithic tunable high-Q notch filter for image rejection in RF application40US 6,990,327 B2Agency for Science, Technology and Research · 2006