G06G 7/1921
For forming fourier integrals, harmonic analysis and synthesis
Official title: {for forming Fourier integrals, harmonic analysis and synthesis (spectrum analysis G01R23/00)}
G06G7/1921 (For forming fourier integrals, harmonic analysis and synthesis) appears on 15 US grants and 1 published applications in this corpus.
Search patents in G06G- Granted patents
- 15
- Published applications
- 1
- Assignees
- 10
- Inventors
- 20
- Latest grant
- 4 Sep 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Configurable analog signal processor4 Sep 2012US 8,258,850 B1Interstate Electronics Corporation
- Analog fourier transform channelizer and OFDM receiver21 Sep 2010US 7,801,228 B2Virginia Tech Intellectual Properties, Inc.
- Analog signal characterizer for functional transformation28 Sep 1999US 5,959,875 AKokusai Electric Corporation
- Complex signal transformation using a resistive network15 Oct 1991US 5,058,049 AMotorola, Inc.
- Signal processing circuit for instantaneous fourier transformation1 Mar 1988US 4,729,114 AUnisys Corporation
Most cited
By later US patents
- Analog fourier transform channelizer and OFDM receiver20US 7,801,228 B2Virginia Tech Intellectual Properties, Inc. · 2010
- Beam former using bessel sequences17US 4,060,850 AThe United States of America as represented by the Secretary of the Navy · 1977
- Discrete Fourier transform system using the dual chirp-Z transform17US 4,282,579 AThe United States of America as represented by the Secretary of the Navy · 1981
- Apparatus for performing a discrete cosine transform of an input signal15US 4,152,772 AThe United States of America as represented by the Secretary of the Navy · 1979
- Two dimensional transform utilizing ultrasonic dispersive delay line13US 4,649,392 ASanders Associates, Inc. · 1987