H03F 7/04
Parametric amplifiers: using variable-capacitance element
Official title: using variable-capacitance element; using variable-permittivity element
H03F7/04 (Parametric amplifiers: using variable-capacitance element) appears on 48 US grants and 34 published applications in this corpus.
Search patents in H03F- Granted patents
- 48
- Published applications
- 34
- Assignees
- 35
- Inventors
- 74
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 6 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 5 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 4 |
| 2019 | 6 | 3 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 3 | 3 |
| 2023 | 3 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cryogenic parametric amplifier control apparatus21 Jul 2026US 12,689,344 B2Millimeter Wave Systems, LLC
- Frequency dependent dynamic range control30 Jan 2024US 11,889,279 B2Nuvoton Technolog y Corporation
- Parametric amplifier having a quantum capacitance device21 Nov 2023US 11,824,505 B2Microsoft Technology Licensing, LLC
- Parametric amplifier17 Oct 2023US 11,791,788 B2NewSouth Innovations Pty Limited
- Optimally detuned parametric amplification, and associated devices6 Jun 2023US 11,671,063 B2The University of Chicago
- Parametric matching methods for broadband, high sensitivity reception with electrically small antennas23 Apr 2026US 2026/0112815 A1The Regents of the University of California
- Systems and methods for tunable parametric amplification30 Jan 2025US 2025/0038722 A1D-Wave Systems Inc.
- Frequency dependent dynamic range control15 Jun 2023US 2023/0188890 A1Nuvoton Technology Corporation
- Optimally detuned parametric amplification, and associated devices19 Jan 2023US 2023/0020178 A1The University of Chicago
- Cryogenic parametric amplifier control apparatus18 Aug 2022US 2022/0263483 A1Millimeter Wave Systems, LLC
Most cited
By later US patents
- Quantum limited josephson amplifier with spatial separation between spectrally degenerate signal and idler modes40US 9,806,711 B1International Business Machines Corporation · 2017
- Method, examination apparatus and antenna array for magnetic resonance data acquisition23US 7,417,433 B2Siemens Aktiengesellschaft · 2008
- Techniques for producing quantum amplifiers and related systems and methods22US 10,404,214 B2Yale University · 2019
- Differential parametric amplifier with physically-coupled electrically-isolated micromachined structures22US 6,611,168 B1Analog Devices, Inc. · 2003
- Method for communicating a magnetic resonance signal, and reception arrangement and magnetic resonance system operable in accord therewith20US 6,906,520 B2Siemens Aktiengesellschaft · 2005