H03L 7/00
Automatic control of frequency or phase
Official title: Automatic control of frequency or phase; Synchronisation
H03L7/00 (Automatic control of frequency or phase) appears on 19,402 US grants and 14,093 published applications in this corpus.
Search patents in H03L- Granted patents
- 19,402
- Published applications
- 14,093
- Assignees
- 2,968
- Inventors
- 21,895
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 64 | 0 |
| 1977 | 81 | 0 |
| 1978 | 84 | 0 |
| 1979 | 65 | 0 |
| 1980 | 69 | 0 |
| 1981 | 58 | 0 |
| 1982 | 75 | 0 |
| 1983 | 58 | 0 |
| 1984 | 69 | 0 |
| 1985 | 97 | 0 |
| 1986 | 102 | 0 |
| 1987 | 114 | 0 |
| 1988 | 85 | 0 |
| 1989 | 148 | 0 |
| 1990 | 128 | 0 |
| 1991 | 130 | 0 |
| 1992 | 172 | 0 |
| 1993 | 132 | 0 |
| 1994 | 184 | 0 |
| 1995 | 208 | 0 |
| 1996 | 234 | 0 |
| 1997 | 249 | 0 |
| 1998 | 342 | 0 |
| 1999 | 366 | 0 |
| 2000 | 488 | 0 |
| 2001 | 531 | 159 |
| 2002 | 531 | 601 |
| 2003 | 556 | 608 |
| 2004 | 647 | 649 |
| 2005 | 576 | 742 |
| 2006 | 759 | 727 |
| 2007 | 682 | 719 |
| 2008 | 634 | 794 |
| 2009 | 674 | 724 |
| 2010 | 778 | 635 |
| 2011 | 725 | 608 |
| 2012 | 668 | 545 |
| 2013 | 718 | 539 |
| 2014 | 695 | 587 |
| 2015 | 629 | 548 |
| 2016 | 714 | 520 |
| 2017 | 595 | 481 |
| 2018 | 453 | 492 |
| 2019 | 719 | 558 |
| 2020 | 727 | 523 |
| 2021 | 569 | 409 |
| 2022 | 489 | 432 |
| 2023 | 438 | 422 |
| 2024 | 385 | 430 |
| 2025 | 417 | 361 |
| 2026 | 291 | 280 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03L 7/06Automatic control of frequency or phase: using a reference signal applied to17,893
- H03L 7/26Automatic control of frequency or phase: using energy levels of molecules, atoms451
- H03L 7/24Automatic control of frequency or phase: using a reference signal directly applied441
- H03L 7/02Automatic control of frequency or phase: using a frequency discriminator comprising a200
Recent patents
- Physics package for chip scale atomic clocks and method of making same6 Oct 2026US 12,754,516 B2Microchip Technology Incorporated
- Clock sync input dropout protection6 Oct 2026US 12,756,172 B2Texas Instruments Incorporated
- Delay locked loop device and method for operating the same6 Oct 2026US 12,756,397 B2Nanya Technology Corporation
- Clock tracking circuit with digital integral path to provide control signals for digital and analog integral inputs of an oscillator6 Oct 2026US 12,756,398 B2Microchip Technology Incorporated
- Voltage-controlled oscillator and phase-locked loop6 Oct 2026US 12,756,399 B2Realtek Semiconductor Corp.
- Time-to-digital converter and phase-locked loop circuit8 Oct 2026US 2026/0310139 A1Novatek Microelectronics Corp.
- Cryogenic hybrid controller for control of multiple superconducting qubits8 Oct 2026US 2026/0312583 A1Dell Products L. P.
- Compensation Technique for the Nonlinear Behavior of Digitally-Controlled Oscillator (DCO) Gain8 Oct 2026US 2026/0312591 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Lock detector including digital calibration8 Oct 2026US 2026/0312592 A1Samsung Electronics Co., Ltd.
- Phase-Locked Loop Circuit8 Oct 2026US 2026/0312593 A1Novatek Microelectronics Corp.
Most cited
By later US patents
- Two-way TDMA telemetry system with power conservation features724US 5,748,103 AVitalcom, Inc. · 1998
- Architecture for TDMA medical telemetry system466US 5,944,659 AVitalcom, Inc. · 1999
- Scannable sense amplifier circuit421US 5,915,084 AAdvanced Micro Devices, Inc. · 1999
- Circuit for driving ultrasonic transducer409US 4,965,532 AOlympus Optical Co., Ltd. · 1990
- Radio frequency data communications device371US 6,130,602 AMicron Technology, Inc. · 2000