H03C 3/00
Angle modulation
Official title: Angle modulation (H03C5/00, H03C7/00 take precedence)
H03C3/00 (Angle modulation) appears on 1,543 US grants and 899 published applications in this corpus.
Search patents in H03C- Granted patents
- 1,543
- Published applications
- 899
- Assignees
- 574
- Inventors
- 2,378
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 11 | 0 |
| 1978 | 18 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 12 | 0 |
| 1984 | 20 | 0 |
| 1985 | 30 | 0 |
| 1986 | 25 | 0 |
| 1987 | 20 | 0 |
| 1988 | 13 | 0 |
| 1989 | 15 | 0 |
| 1990 | 23 | 0 |
| 1991 | 27 | 0 |
| 1992 | 36 | 0 |
| 1993 | 11 | 0 |
| 1994 | 23 | 0 |
| 1995 | 39 | 0 |
| 1996 | 45 | 0 |
| 1997 | 19 | 0 |
| 1998 | 42 | 0 |
| 1999 | 43 | 0 |
| 2000 | 38 | 0 |
| 2001 | 28 | 9 |
| 2002 | 30 | 39 |
| 2003 | 41 | 49 |
| 2004 | 53 | 87 |
| 2005 | 37 | 85 |
| 2006 | 63 | 58 |
| 2007 | 53 | 66 |
| 2008 | 63 | 48 |
| 2009 | 67 | 58 |
| 2010 | 65 | 41 |
| 2011 | 73 | 32 |
| 2012 | 40 | 31 |
| 2013 | 36 | 24 |
| 2014 | 34 | 25 |
| 2015 | 39 | 43 |
| 2016 | 31 | 30 |
| 2017 | 34 | 17 |
| 2018 | 29 | 34 |
| 2019 | 34 | 22 |
| 2020 | 35 | 30 |
| 2021 | 29 | 20 |
| 2022 | 18 | 18 |
| 2023 | 15 | 14 |
| 2024 | 11 | 11 |
| 2025 | 15 | 5 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03C 3/02Details905
- H03C 3/38Angle modulation: by converting amplitude modulation to angle modulation347
- H03C 3/10Angle modulation: by means of variable impedance158
- H03C 3/42Angle modulation: by means of electromechanical devices18
- H03C 3/005Circuits for asymmetric modulation13
- H03C 3/30Angle modulation: by means of transit-time tube8
- H03C 3/36Angle modulation: by means of light-sensitive element6
- H03C 3/34Angle modulation: by deflection of electron beam in discharge tube0
Recent patents
- Calibration circuit and method, phase-shift circuit, radio-frequency transceiver circuit, radar and device26 May 2026US 12,638,547 B2Calterah Semiconductor Technology (Shanghai) Co., Ltd.
- Phase-locked loop, radar system and method for randomizing initial phases of FMCW signals12 May 2026US 12,625,245 B2Calterah Semiconductor Technology (Shanghai) Co., Ltd.
- Multi-gigabit per second frequency-shift keying (FSK) transceiver28 Apr 2026US 12,615,174 B2The Regents of the University of California
- Phase-locked loops (PLL) including digitally controlled oscillator (DCO) gain calibration circuits and related methods21 Apr 2026US 12,609,707 B2Microsoft Technology Licensing, LLC
- Ultra low power wake up radio architecture10 Mar 2026US 12,574,126 B2Northeastern University
- Polar digital frequency modulator27 Aug 2026US 2026/0254444 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Non-uniform coarse dco steps for improved chirp linearity23 Jul 2026US 2026/0213756 A1NXP B. V.
- Signal processing system and signal processing method22 Jan 2026US 2026/0025619 A1Chicony Electronics Co., Ltd.
- Oscillator that performs linear frequency modulation upon oscillation signal output to dc-to-dc converter under voltage mode18 Dec 2025US 2025/0385662 A1Elite Semiconductor Microelectronics Technology Inc.
- Partial-Fractional Phase-locked Loop with Sigma Delta Modulator and Finite Impulse Response Filter20 Nov 2025US 2025/0357935 A1Apple Inc.
Most cited
By later US patents
- Serial communication protocol for medical device579US 9,226,766 B2Ethicon Endo-Surgery, Inc. · 2016
- Digital radio frequency receiver350US 4,893,316 AMotorola, Inc. · 1990
- Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones346US 6,389,010 B1Intermec IP Corp. · 2002
- Method and device relating to supervision and control of an oscillator signal327US 6,147,560 ATelefonaktiebolget LM Ericsson · 2000
- Digital compensation for wideband modulation of a phase locked loop frequency synthesizer313US 6,008,703 AMassachusetts Institute of Technology · 1999