G01S 13/34
Using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or
Official title: using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S13/34 (Using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or) appears on 2,798 US grants and 3,159 published applications in this corpus.
Search patents in G01S- Granted patents
- 2,798
- Published applications
- 3,159
- Assignees
- 760
- Inventors
- 4,318
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 11 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 14 | 0 |
| 1987 | 6 | 0 |
| 1988 | 11 | 0 |
| 1989 | 5 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 6 | 0 |
| 1993 | 16 | 0 |
| 1994 | 22 | 0 |
| 1995 | 19 | 0 |
| 1996 | 21 | 0 |
| 1997 | 22 | 0 |
| 1998 | 27 | 0 |
| 1999 | 43 | 0 |
| 2000 | 44 | 0 |
| 2001 | 24 | 8 |
| 2002 | 35 | 24 |
| 2003 | 33 | 51 |
| 2004 | 42 | 43 |
| 2005 | 32 | 37 |
| 2006 | 28 | 26 |
| 2007 | 28 | 32 |
| 2008 | 30 | 56 |
| 2009 | 38 | 58 |
| 2010 | 56 | 51 |
| 2011 | 31 | 57 |
| 2012 | 37 | 58 |
| 2013 | 36 | 52 |
| 2014 | 49 | 58 |
| 2015 | 53 | 113 |
| 2016 | 76 | 108 |
| 2017 | 85 | 131 |
| 2018 | 99 | 168 |
| 2019 | 127 | 210 |
| 2020 | 202 | 271 |
| 2021 | 195 | 286 |
| 2022 | 212 | 286 |
| 2023 | 230 | 302 |
| 2024 | 253 | 278 |
| 2025 | 281 | 228 |
| 2026 | 137 | 167 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01S 13/343Using sawtooth modulation1,188
- G01S 13/345Using triangular modulation613
- G01S 13/347Using more than one modulation frequency214
- G01S 13/346Using noise modulation69
- G01S 13/348Using square or rectangular modulation68
- G01S 13/341Wherein the rate of change of the transmitted frequency is adjusted to58
- G01S 13/342Using sinusoidal modulation36
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Most cited
By later US patents
- Smart blind spot sensor535US 5,325,096 AVorad Safety Systems, Inc. · 1994
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- Method and device relating to supervision and control of an oscillator signal327US 6,147,560 ATelefonaktiebolget LM Ericsson · 2000
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