G01R 23/16
Spectrum analysis
Official title: Spectrum analysis; Fourier analysis
G01R23/16 (Spectrum analysis) appears on 1,440 US grants and 1,025 published applications in this corpus.
Search patents in G01R- Granted patents
- 1,440
- Published applications
- 1,025
- Assignees
- 737
- Inventors
- 2,863
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 14 | 0 |
| 1978 | 13 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 22 | 0 |
| 1982 | 12 | 0 |
| 1983 | 12 | 0 |
| 1984 | 17 | 0 |
| 1985 | 21 | 0 |
| 1986 | 19 | 0 |
| 1987 | 35 | 0 |
| 1988 | 39 | 0 |
| 1989 | 36 | 0 |
| 1990 | 28 | 0 |
| 1991 | 24 | 0 |
| 1992 | 24 | 0 |
| 1993 | 17 | 0 |
| 1994 | 20 | 0 |
| 1995 | 21 | 0 |
| 1996 | 29 | 0 |
| 1997 | 11 | 0 |
| 1998 | 29 | 0 |
| 1999 | 12 | 0 |
| 2000 | 20 | 0 |
| 2001 | 32 | 3 |
| 2002 | 25 | 16 |
| 2003 | 27 | 21 |
| 2004 | 18 | 16 |
| 2005 | 15 | 27 |
| 2006 | 20 | 28 |
| 2007 | 18 | 21 |
| 2008 | 23 | 28 |
| 2009 | 11 | 48 |
| 2010 | 24 | 28 |
| 2011 | 19 | 24 |
| 2012 | 29 | 32 |
| 2013 | 30 | 37 |
| 2014 | 41 | 37 |
| 2015 | 36 | 39 |
| 2016 | 36 | 45 |
| 2017 | 39 | 52 |
| 2018 | 50 | 69 |
| 2019 | 67 | 63 |
| 2020 | 79 | 74 |
| 2021 | 69 | 75 |
| 2022 | 46 | 59 |
| 2023 | 47 | 64 |
| 2024 | 51 | 46 |
| 2025 | 64 | 41 |
| 2026 | 24 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01R 23/20Measurement of non-linear distortion300
- G01R 23/165Using filters258
- G01R 23/17With optical or acoustical auxiliary devices110
- G01R 23/18With provision for recording frequency spectrum90
- G01R 23/163Adapted for measuring in circuits having distributed constants75
- G01R 23/173Wobbulating devices similar to swept panoramic receivers71
- G01R 23/175By delay means36
- G01R 23/177Analysis of very low frequencies12
Recent patents
- Method and device for testing a voltage converter29 Sep 2026US 12,748,163 B2Omicron Electronics GmbH
- Wireless communication device and method for enhanced resolution spectrum monitoring25 Aug 2026US 12,716,924 B1Peltbeam Inc.
- Electromagnetically induced grating-based electric field detection system and method18 Aug 2026US 12,710,460 B2Korea Research Institute of Standards and Science
- Measurement application device30 Jun 2026US 12,669,526 B2Rohde & Schwarz GmbH & Co.KG
- Fault detection method and device for elevator power equipment and elevator system16 Jun 2026US 12,654,986 B2Otis Elevator Company
- Short-circuit detection in a bifilar electric drive system24 Sep 2026US 2026/0287684 A1Rolls-Royce Deutschland Ltd & Co KG
- Circuit carrier, measurement application device and method17 Sep 2026US 2026/0276677 A1Rohde & Schwarz GmbH & Co.KG
- System and method for non-invasive sensing of radio-frequency current spectra flowing in a plasma processing chamber10 Sep 2026US 2026/0266880 A1APPLIED Materials.Inc.
- Device and method for processing a digital signal3 Sep 2026US 2026/0259110 A1
- Ground Monitoring Device27 Aug 2026US 2026/0251726 A1Steiner Enterprises
Most cited
By later US patents
- Electrical power line and substation monitoring apparatus and systems325US 4,758,962 A1988
- Analog spectrum display for environmental control248US 5,973,662 AJohnson Controls Technology Company · 1999
- Signal pulse detection scheme for use in real-time spectrum analysis234US 7,292,656 B2Cognio, Inc. · 2007
- System and apparatus for detecting and analyzing a frequency spectrum228US 7,459,898 B12008
- Signal pulse detection scheme for use in real-time spectrum analysis226US 7,606,335 B2Cisco Technology, Inc. · 2009