E21B 47/114
Using light radiation
Official title: {using light radiation}
E21B47/114 (Using light radiation) appears on 131 US grants and 148 published applications in this corpus.
Search patents in E21B- Granted patents
- 131
- Published applications
- 148
- Assignees
- 50
- Inventors
- 312
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 4 |
| 2003 | 2 | 4 |
| 2004 | 5 | 3 |
| 2005 | 3 | 2 |
| 2006 | 2 | 5 |
| 2007 | 4 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 3 |
| 2010 | 3 | 7 |
| 2011 | 3 | 3 |
| 2012 | 4 | 4 |
| 2013 | 3 | 3 |
| 2014 | 2 | 10 |
| 2015 | 1 | 5 |
| 2016 | 5 | 6 |
| 2017 | 4 | 11 |
| 2018 | 5 | 4 |
| 2019 | 7 | 7 |
| 2020 | 8 | 6 |
| 2021 | 9 | 16 |
| 2022 | 4 | 9 |
| 2023 | 20 | 16 |
| 2024 | 8 | 8 |
| 2025 | 9 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fiber optic enabled intelligent completion employing an end connector16 Jun 2026US 12,655,695 B2
- Method and system for detecting events in a conduit31 Mar 2026US 12,590,861 B2Hifi Engineering Inc.
- Method for mirror imaging of gas holdup in gas-water two-phase flow based on fiber optic probe array24 Feb 2026US 12,560,082 B1Yangtze University
- Method and device for obtaining measurements of downhole properties in a subterranean well10 Feb 2026US 12,546,211 B2Saudi Arabian Oil Company
- Completion system for CCS monitoring16 Dec 2025US 12,497,854 B2Welltec Manufacturing Center Completions ApS
- Machine Learning Assisted Downhole Multiphase Flowmeter7 May 2026US 2026/0125977 A1Weatherford Technology Holdings, LLC
- Long range optical fiber sensing systems6 Nov 2025US 2025/0341409 A1Silixa Ltd.
- Self-Powered Optical Amplifiers28 Aug 2025US 2025/0271295 A1Halliburton Energy Services.Inc.
- Fiber optic enabled intelligent completion employing an end connector24 Jul 2025US 2025/0237113 A1Halliburton Energy Services.Inc.
- Sensor correlation and identification for event detection24 Jul 2025US 2025/0237139 A1Lytt Limited
Most cited
By later US patents
- Drilling systems with sensors for determining properties of drilling fluid downhole402US 6,176,323 B1Baker Hughes Incorporated · 2001
- Method and system for monitoring smart structures utilizing distributed optical sensors332US 6,913,079 B22005
- Monitoring of downhole parameters and tools utilizing fiber optics244US 6,281,489 B1Baker Hughes Incorporated · 2001
- In situ optical computation fluid analysis system and method131US 7,697,141 B2Halliburton Energy Services.Inc. · 2010
- Apparatus for sensing fluid in a pipe125US 6,782,150 B2Weatherford/Lamb, Inc. · 2004