G01J 2001/4242
Modulated light
Official title: {Modulated light, e.g. for synchronizing source and detector circuit}
G01J2001/4242 (Modulated light) appears on 179 US grants and 120 published applications in this corpus.
Search patents in G01J- Granted patents
- 179
- Published applications
- 120
- Assignees
- 152
- Inventors
- 401
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 0 | 1 |
| 2004 | 3 | 3 |
| 2005 | 2 | 6 |
| 2006 | 7 | 12 |
| 2007 | 3 | 3 |
| 2008 | 6 | 7 |
| 2009 | 4 | 6 |
| 2010 | 4 | 4 |
| 2011 | 2 | 2 |
| 2012 | 4 | 1 |
| 2013 | 3 | 3 |
| 2014 | 3 | 3 |
| 2015 | 2 | 3 |
| 2016 | 4 | 5 |
| 2017 | 4 | 4 |
| 2018 | 7 | 9 |
| 2019 | 4 | 4 |
| 2020 | 5 | 10 |
| 2021 | 4 | 6 |
| 2022 | 7 | 4 |
| 2023 | 5 | 8 |
| 2024 | 6 | 8 |
| 2025 | 7 | 5 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Photoelectric sensor capable of resisting high-frequency light interference30 Jun 2026US 12,669,373 B2Shanghai Lanbao Sensing Technology Co., Ltd.
- System and method for mainstream exhaled oxygen sensor12 May 2026US 12,622,600 B2The Trustees of Princeton University
- Measurement method for characterization of a photodetector17 Mar 2026US 12,578,224 B2ams-OSRAM Internatioanl GmbH
- Multiphase lock-in spectrometer assembly applied to a modulated source of multi-wavelength optical radiation, and associated methods and uses6 Jan 2026US 12,516,978 B2Centre Scientifique Et Technique Du Batiment (Cstb)
- Transmission-based temperature measurement of a workpiece in a thermal processing system26 Aug 2025US 12,400,916 B2Beijing E-Town Semiconductor Technology Co., Ltd.
- Analysis device and analysis method25 Dec 2025US 2025/0389643 A1Horiba, Ltd.
- Infrared microscope25 Sep 2025US 2025/0297949 A1Jasco Corporation
- Image noise reduction using modulation and demodulation - demodulation techniques28 Aug 2025US 2025/0274673 A1
- Systems and methods for investigating optical inputs12 Jun 2025US 2025/0189366 A1Aston Triangle
- Photoelectric conversion element, photodetector, photodetection system, electronic apparatus, and mobile body8 May 2025US 2025/0151427 A1Sony Semiconductor Solutions Corporation
Most cited
By later US patents
- Apparatus and method for measuring blood constituents373US 4,863,265 AMine Safety Appliances Company · 1989
- Apparatus and method for determining a distance to an object in a field for the controlled release of chemicals on plants, weeds, trees or soil and/or guidance of farm vehicles206US 5,585,626 APatchen, Inc. · 1996
- Structure and method for differentiating one object from another object185US 5,296,702 APatchen California · 1994
- Apparatus and method for use in pulse oximeters159US 4,807,630 AAdvanced Medical Systems, Inc. · 1989
- Gas species monitor system133US 4,953,976 ASpectral Sciences, Inc. · 1990