G01D 5/268
Using optical fibres
Official title: {using optical fibres (G01D5/28 - G01D5/38 take precedence)}
G01D5/268 (Using optical fibres) appears on 685 US grants and 437 published applications in this corpus.
Search patents in G01D- Granted patents
- 685
- Published applications
- 437
- Assignees
- 414
- Inventors
- 1,346
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 9 | 0 |
| 1982 | 11 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 12 | 0 |
| 1986 | 13 | 0 |
| 1987 | 25 | 0 |
| 1988 | 22 | 0 |
| 1989 | 26 | 0 |
| 1990 | 19 | 0 |
| 1991 | 22 | 0 |
| 1992 | 24 | 0 |
| 1993 | 20 | 0 |
| 1994 | 16 | 0 |
| 1995 | 17 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 4 |
| 2002 | 9 | 12 |
| 2003 | 11 | 6 |
| 2004 | 7 | 15 |
| 2005 | 12 | 13 |
| 2006 | 13 | 10 |
| 2007 | 6 | 7 |
| 2008 | 10 | 15 |
| 2009 | 13 | 21 |
| 2010 | 16 | 9 |
| 2011 | 9 | 11 |
| 2012 | 6 | 12 |
| 2013 | 9 | 17 |
| 2014 | 16 | 25 |
| 2015 | 19 | 30 |
| 2016 | 26 | 19 |
| 2017 | 16 | 23 |
| 2018 | 31 | 38 |
| 2019 | 30 | 23 |
| 2020 | 19 | 28 |
| 2021 | 23 | 23 |
| 2022 | 23 | 15 |
| 2023 | 11 | 20 |
| 2024 | 15 | 21 |
| 2025 | 18 | 16 |
| 2026 | 13 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical-sensing demodulation module and optical-sensing system25 Aug 2026US 12,716,754 B2Otn Intelligent Technology (Suzhou) Co., Ltd
- Multi-boundary detection via focal-point-related boundaries for filtered light25 Aug 2026US 12,718,375 B1CyberSecure Innovations, LLC
- Sensors for measuring pressure and temperature11 Aug 2026US 12,704,428 B2Simmonds Precision Products, Inc.
- Systems and methods for imaging a proppant in a hydraulically-fractured oil reservoir4 Aug 2026US 12,698,707 B2Carbo Ceramics Inc.
- Sensors for measuring pressure and temperature9 Jun 2026US 12,650,339 B2Simmonds Precision Products, Inc.
- A novel technique for leak detection and quantification using fiber bragg gratings1 Oct 2026US 2026/0298764 A1
- Data integration device, data integration method, and non-transitory computer-readable medium3 Sep 2026US 2026/0259069 A1NEC Corporation
- Rugged temperature tolerant extrinsic fabry-perot pressure sensor25 Jun 2026US 2026/0177440 A1Davidson Instruments Inc.
- Fluorescence time decay sensing apparatus and methods of manufacturing same4 Jun 2026US 2026/0153388 A1Osensa Innovations Corp.
- Optical sensor20 Nov 2025US 2025/0354837 A1WIKA Optical Sensing Limited
Most cited
By later US patents
- Three-parameter optical fiber sensor and system497US 4,986,671 ALuxtron Corporation · 1991
- Optical encoder with fiber optics297US 4,162,399 ABEI Electronics, Inc. · 1979
- Monitoring of downhole parameters and tools utilizing fiber optics244US 6,281,489 B1Baker Hughes Incorporated · 2001
- Monitoring of downhole parameters and tools utilizing fiber optics241US 6,588,266 B2Baker Hughes Incorporated · 2003
- Photoluminescent fibers, compositions and fabrics made therefrom216US 8,207,511 B2Performance Indicator, LLC · 2012