A61B 5/7257
Using fourier transforms
Official title: {using Fourier transforms}
A61B5/7257 (Using fourier transforms) appears on 2,441 US grants and 3,163 published applications in this corpus.
Search patents in A61B- Granted patents
- 2,441
- Published applications
- 3,163
- Assignees
- 1,378
- Inventors
- 5,758
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 14 | 0 |
| 1995 | 19 | 0 |
| 1996 | 11 | 0 |
| 1997 | 18 | 0 |
| 1998 | 31 | 0 |
| 1999 | 28 | 0 |
| 2000 | 41 | 0 |
| 2001 | 34 | 11 |
| 2002 | 30 | 39 |
| 2003 | 38 | 38 |
| 2004 | 32 | 70 |
| 2005 | 16 | 50 |
| 2006 | 35 | 65 |
| 2007 | 42 | 68 |
| 2008 | 31 | 71 |
| 2009 | 40 | 97 |
| 2010 | 55 | 140 |
| 2011 | 63 | 105 |
| 2012 | 101 | 107 |
| 2013 | 97 | 95 |
| 2014 | 105 | 125 |
| 2015 | 71 | 117 |
| 2016 | 105 | 187 |
| 2017 | 104 | 195 |
| 2018 | 98 | 196 |
| 2019 | 143 | 208 |
| 2020 | 179 | 230 |
| 2021 | 159 | 236 |
| 2022 | 145 | 153 |
| 2023 | 152 | 171 |
| 2024 | 143 | 155 |
| 2025 | 118 | 147 |
| 2026 | 68 | 87 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- System and method for non-invasive determination of intracranial pressure1 Oct 2026US 2026/0294265 A1Lions Eye Institute Limited
- Vital sign monitoring system for detecting multiple vital signs of multiple persons in a scene and method thereof24 Sep 2026US 2026/0283480 A1Delta Electronics Int'l (Singapore) Pte Ltd
- Deep vein thrombosis detection device24 Sep 2026US 2026/0283491 A1
- Systems and Methods for Automated Detection of Breath Sounds24 Sep 2026US 2026/0283501 A1The Board of Trustees of the Leland Stanford Junior University
Most cited
By later US patents
- Signal processing apparatus and method1,543US 6,002,952 AMasimo Corporation · 1999
- Signal processing apparatus1,538US 6,081,735 AMasimo Corporation · 2000
- Signal processing apparatus1,373US 5,632,272 AMasimo Corporation · 1997
- Signal processing apparatus1,365US 6,157,850 AMasimo Corporation · 2000
- Apparatus and method for noninvasive blood pressure measurement1,297US 5,533,511 AVital Insite, Inc. · 1996