G01R 15/24
Using light-modulating devices
Official title: using light-modulating devices
G01R15/24 (Using light-modulating devices) appears on 590 US grants and 325 published applications in this corpus.
Search patents in G01R- Granted patents
- 590
- Published applications
- 325
- Assignees
- 304
- Inventors
- 1,013
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 12 | 0 |
| 1986 | 13 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 14 | 0 |
| 1990 | 30 | 0 |
| 1991 | 24 | 0 |
| 1992 | 20 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 19 | 0 |
| 1996 | 14 | 0 |
| 1997 | 11 | 0 |
| 1998 | 22 | 0 |
| 1999 | 17 | 0 |
| 2000 | 18 | 0 |
| 2001 | 14 | 4 |
| 2002 | 15 | 12 |
| 2003 | 18 | 10 |
| 2004 | 9 | 11 |
| 2005 | 7 | 12 |
| 2006 | 11 | 6 |
| 2007 | 7 | 9 |
| 2008 | 10 | 11 |
| 2009 | 8 | 15 |
| 2010 | 13 | 10 |
| 2011 | 9 | 21 |
| 2012 | 6 | 13 |
| 2013 | 10 | 14 |
| 2014 | 16 | 12 |
| 2015 | 11 | 17 |
| 2016 | 15 | 17 |
| 2017 | 20 | 15 |
| 2018 | 10 | 16 |
| 2019 | 25 | 12 |
| 2020 | 12 | 14 |
| 2021 | 17 | 11 |
| 2022 | 9 | 8 |
| 2023 | 10 | 15 |
| 2024 | 11 | 11 |
| 2025 | 8 | 19 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated optical system-based optical current sensor system15 Sep 2026US 12,736,564 B2Optonics Co., Ltd.
- Fiber optic current sensor controller25 Aug 2026US 12,716,919 B2OpticAmpere LLC
- CMOS integration of a high bandwidth optically isolated current sensor21 Jul 2026US 12,689,283 B2STMicroelectronics International N. V.
- Passive optical Sagnac interferometer for current sensing7 Jul 2026US 12,674,823 B2Smart Digital Optics Pty Ltd
- Sensor with a light guide connection7 Jul 2026US 12,674,824 B2
- Utility meter with digital inputs and synchronization circuit17 Sep 2026US 2026/0276686 A1
- Non-instrusive passive wireless self-energizing quantum current sensor16 Jul 2026US 2026/0202446 A1Southern Power Grid Sensing Technology (Guangdong) Co., Ltd.
- Fiber Optic Current Sensor Module for Switchgear Metering and Field-Testing Applications9 Jul 2026US 2026/0194561 A1OpticAmpere LLC
- Measuring an Electrical Current Using Two Optical Current Transformers28 May 2026US 2026/0147022 A1HSP Hochspannungsgeräte GmbH
- Method and structure to incorporate multiple low loss photonic circuit components19 Mar 2026US 2026/0079185 A1Psiquantum, Corp.
Most cited
By later US patents
- Method for remotely detecting an electric field using a liquid crystal device154US 4,818,072 ARaychem Corporation · 1989
- Optical sensing apparatus and method136US 4,940,328 AGeorgia Tech Research Corporation · 1990
- Measurement of electrical signals with subpicosecond resolution87US 4,618,819 AUniversity of Rochester · 1986
- Methods and apparatus for optically measuring polarization rotation of optical wavefronts using rare earth iron garnets78US 6,534,977 B12003
- Measurement of electrical signals with picosecond resolution74US 4,446,425 AUniversity of Rochester · 1984