G01N 21/3581
Using far infrared light
Official title: using far infrared light; using Terahertz radiation
G01N21/3581 (Using far infrared light) appears on 1,093 US grants and 1,332 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,093
- Published applications
- 1,332
- Assignees
- 603
- Inventors
- 2,268
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 2 |
| 2002 | 5 | 6 |
| 2003 | 4 | 11 |
| 2004 | 8 | 17 |
| 2005 | 12 | 25 |
| 2006 | 12 | 34 |
| 2007 | 16 | 36 |
| 2008 | 17 | 44 |
| 2009 | 36 | 48 |
| 2010 | 52 | 70 |
| 2011 | 41 | 54 |
| 2012 | 47 | 72 |
| 2013 | 51 | 67 |
| 2014 | 48 | 73 |
| 2015 | 87 | 81 |
| 2016 | 76 | 58 |
| 2017 | 56 | 56 |
| 2018 | 54 | 47 |
| 2019 | 54 | 70 |
| 2020 | 59 | 85 |
| 2021 | 56 | 80 |
| 2022 | 67 | 71 |
| 2023 | 60 | 74 |
| 2024 | 52 | 61 |
| 2025 | 71 | 49 |
| 2026 | 30 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composite structure detecting method and system6 Oct 2026US 12,754,142 B2Advanced ACEBIOTEK CO., LTD.
- Adsorption evaluation apparatus and adsorption evaluation method22 Sep 2026US 12,742,730 B2Hamamatsu Photonics K.K.
- Layered detection method and layered detection system15 Sep 2026US 12,736,468 B2Advanced ACEBIOTEK CO., LTD.
- End-of-season stalk nitrate sensor1 Sep 2026US 12,724,118 B2Deere & Company
- Terahertz spectroscopy system with specialized measurement unit for non-destructive sample detection1 Sep 2026US 12,725,085 B2Anor Technologies Pte. Ltd.
- Probe and inspection apparatus including the same24 Sep 2026US 2026/0287503 A1Samsung Electronics Co., Ltd.
- Contactless detecting a physical feature of a material17 Sep 2026US 2026/0276536 A1
- Polymer monitoring device and method using terahertz waves17 Sep 2026US 2026/0276537 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang
- Determining a refractive index for infrared wavelength ranges17 Sep 2026US 2026/0276541 A1University of Central Florida Research Foundation, Inc.
- Interference measurement device and interference measurement method10 Sep 2026US 2026/0266661 A1Hamamatsu Photonics K.K.
Most cited
By later US patents
- Device and method for in vitro determination of analyte concentrations within body fluids438US 6,989,891 B2OptiScan Biomedical Corporation · 2006
- Method and system for transmitting terahertz pulses257US 7,531,803 B2William Marsh Rice University · 2009
- Quasi-optical transceiver having an antenna with time varying voltage248US 6,348,683 B1Massachusetts Institute of Technology · 2002
- Self-emission noninvasive infrared spectrophotometer238US 5,515,847 AOptiscan, Inc. · 1996
- Dielectric covered planar antennas224US 8,780,012 B2California Institute of Technology · 2014