G01F 1/6884
Making use of temperature dependence of optical properties
Official title: {making use of temperature dependence of optical properties}
G01F1/6884 (Making use of temperature dependence of optical properties) appears on 57 US grants and 54 published applications in this corpus.
Search patents in G01F- Granted patents
- 57
- Published applications
- 54
- Assignees
- 39
- Inventors
- 143
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 3 |
| 2007 | 2 | 4 |
| 2008 | 3 | 3 |
| 2009 | 1 | 3 |
| 2010 | 3 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 2 |
| 2014 | 3 | 8 |
| 2015 | 3 | 2 |
| 2016 | 1 | 1 |
| 2017 | 3 | 1 |
| 2018 | 3 | 2 |
| 2019 | 3 | 2 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 1 | 0 |
| 2023 | 3 | 3 |
| 2024 | 3 | 0 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for measuring flow velocity distribution of groundwater using distributed optical fiber with active heating7 Oct 2025US 12,436,012 B2
- System and method for determining at least one calculated process parameter of a fluid in a pipe23 Sep 2025US 12,422,290 B2ABB Schweiz AG
- Production logging inversion based on LFDAS/DTS6 May 2025US 12,291,943 B2ConocoPhillips Company
- Sensor for measuring a flow of a fluid16 Jul 2024US 12,036,012 B2UCL Business PLC
- Method for non-intrusively determining the temperature of a fluid flowing through a conduit portion5 Mar 2024US 11,920,965 B2ABB Schweiz AG
- Method for measuring flow velocity distribution of groundwater using distributed optical fiber with active heating7 Aug 2025US 2025/0251266 A1Institute of Geology and Geophysics, Chinese Academy of Sciences
- System and Method for Determining at Least One Calculated Process Parameter of a Fluid in a Pipe9 Nov 2023US 2023/0358585 A1ABB Schweiz AG
- Production logging inversion based on das/dts14 Sep 2023US 2023/0287766 A1ConocoPhillips Company
- Gas meter and associated methods9 Feb 2023US 2023/0041777 A1Ventbuster Holdings Inc.
- Production logging inversion based on das/dts5 Aug 2021US 2021/0238972 A1ConocoPhillips Company
Most cited
By later US patents
- Cardiac blood flow sensor and method85US 5,520,190 AVentritex, Inc. · 1996
- Method and apparatus for determining flow rates76US 6,920,395 B2Sensor Highway Limited · 2005
- Method and apparatus for determining flow rates56US 6,618,677 B1Sensor Highway Limited · 2003
- Fiber optic thermal anemometer52US 4,621,929 ALuxtron Corporation · 1986
- Apparatus, system and methods for measuring a blood pressure gradient30US 9,504,392 B2Three Rivers Cardiovascular Systems Inc. · 2016