H03C 1/52
Modulators in which carrier or one sideband is wholly or partially suppressed
Official title: Modulators in which carrier or one sideband is wholly or partially suppressed (H03C1/28 - H03C1/34, H03C1/46, H03C1/48 take precedence)
H03C1/52 (Modulators in which carrier or one sideband is wholly or partially suppressed) appears on 198 US grants and 61 published applications in this corpus.
Search patents in H03C- Granted patents
- 198
- Published applications
- 61
- Assignees
- 128
- Inventors
- 321
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 4 |
| 2003 | 2 | 3 |
| 2004 | 5 | 5 |
| 2005 | 3 | 2 |
| 2006 | 4 | 4 |
| 2007 | 5 | 4 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 3 | 5 |
| 2011 | 1 | 3 |
| 2012 | 3 | 3 |
| 2013 | 3 | 2 |
| 2014 | 3 | 1 |
| 2015 | 4 | 1 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 2 |
| 2021 | 7 | 3 |
| 2022 | 2 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems, methods, and devices for electromagnetic modulation26 May 2026US 12,640,685 B2The MITRE Corporation
- Driving circuit producing DSB-SC modulation signal1 Oct 2024US 12,107,546 B1xMEMS Labs, Inc.
- Low power wideband multitone generator3 Oct 2023US 11,774,478 B2International Business Machines Corporation
- Enhanced constant-on-time buck intellectual property apparatus and method29 Aug 2023US 11,742,754 B2Intel Corporation
- Passive wideband mixer13 Dec 2022US 11,527,995 B2
- Method and Device for Converting an Analog Input Signal into a Digital Output Signal12 Mar 2026US 2026/0074725 A1Siemens Aktiengesellschaft
- Input Facility, Controller, and Measurement Apparatus8 Jan 2026US 2026/0009824 A1Siemens Aktiengesellschaft
- Systems, methods, and devices for electromagnetic modulation24 Jul 2025US 2025/0239972 A1The MITRE Corporation
- Synthesizing composite signals19 Dec 2024US 2024/0421847 A1Textron Systems Corporation
- Low power wideband multitone generator23 Feb 2023US 2023/0054999 A1International Business Machines Corporation
Most cited
By later US patents
- Interface between SAW filter and Gilbert cell mixer132US 5,515,014 AAT&T Corp. · 1996
- I/Q quadraphase modulator circuit126US 5,574,755 APhilips Electronics North America Corporation · 1996
- DC offset reduction in a transmitter114US 5,793,817 AU. S. Philips Corporation · 1998
- RF signal generator106US 4,047,121 AThe United States of America as represented by the Secretary of the Navy · 1977
- Circuit for simultaneous amplitude modulation of a number of signals104US 5,434,546 A1995