G01F 1/7042
Using radioactive tracers
Official title: {using radioactive tracers}
G01F1/7042 (Using radioactive tracers) appears on 51 US grants and 20 published applications in this corpus.
Search patents in G01F- Granted patents
- 51
- Published applications
- 20
- Assignees
- 31
- Inventors
- 81
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 10 | 0 |
| 1978 | 2 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 3 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 4 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for assessing groundwater flow zones5 May 2026US 12,618,702 B2Hydro-Ressources Inc.
- Ray transceiving system of underwater flowmeter and deduction metering method14 Oct 2025US 12,442,674 B2Haimo Subsea Technology (Shanghai) co., Ltd.
- Estimates of flow velocity with controlled spatio-temporal variations in contrast media properties7 Feb 2023US 11,573,108 B2ExxonMobil Technology and Engineering Company
- Device for measuring flow rate of wet gas based on an exempt radioactive source14 Dec 2021US 11,199,428 B2Wuxi Sea Pioneers Technologies Co. Ltd
- Estimating cuttings removal28 Aug 2018US 10,060,209 B2Statoil Petroleum AS
- Ray transceiving system of underwater flowmeter and deduction metering method11 May 2023US 2023/0146177 A1Haimo Subsea Technology (Shanghai) co., Ltd.
- Methods for assessing groundwater flow zones4 May 2023US 2023/0133249 A1Hydro-Ressources Inc.
- Estimates of Flow Velocity With Controlled Spatio-Temporal Variations in Contrast Media Properties27 Aug 2020US 2020/0271497 A1ExxonMobil Research and Engineering Company
- Estimates of Flow Velocity with Controlled Spatio-Temporal Variations in Contract Media Properties27 Aug 2020US 2020/0271498 A1ExxonMobil Research and Engineering Company
- Device for measuring flow rate of wet gas based on an exempt radioactive source20 Aug 2020US 2020/0264020 A1Wuxi Sea Pioneers Technologies Co. Ltd
Most cited
By later US patents
- Multi-component flow measurement and imaging79US 4,868,856 ANational Research Development Corporation · 1989
- Method and apparatus for the measurement of the mass flow rates of fluid components in a multiphase slug flow53US 5,654,551 ACommonwealth Scientific and Industrial Research Organisation · 1997
- Chemical tracer method of and structure for determination of instantaneous and total mass and volume fluid flow28US 4,167,870 A1979
- Method for determining dynamic flow characteristics of multiphase flows23US 5,047,632 ASchlumberger Technology Corporation · 1991
- Measurement of flow velocity and mass flowrate22US 5,025,160 ACommonwealth Scientific and Industrial Research Organisation · 1991