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Class Information
Number: 250/356.2
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Flow metering > Using radioactive tracer
Description: Subject matter wherein the material is or includes a radioactive substance.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7402800 |
Method and device for the continuous determination of damage to systems used for the post-treatment of heat engine exhaust gases |
Jul. 22, 2008 |
| 7394074 |
Protective housing for radionuclide generator and combination thereof |
Jul. 1, 2008 |
| 7342231 |
Detection of coincident radiations in a single transducer by pulse shape analysis |
Mar. 11, 2008 |
| 7291836 |
Method and device for continuous determination of lubricating oil consumption of an internal combustion engine |
Nov. 6, 2007 |
| 6653651 |
Micron resolution particle image velocimeter |
Nov. 25, 2003 |
| 6399390 |
Measuring movement of solid particles and particle interactions in a flowing system |
Jun. 4, 2002 |
| 5543617 |
Method of measuring flow velocities using tracer techniques |
Aug. 6, 1996 |
| 5243190 |
Radioactive tracing with particles |
Sep. 7, 1993 |
| 5219518 |
Nuclear oxygen activation method and apparatus for detecting and quantifying water flow |
Jun. 15, 1993 |
| 5200615 |
Method and apparatus for detecting the presence of fluids |
Apr. 6, 1993 |
| 5187366 |
Sensors for detecting leaks |
Feb. 16, 1993 |
| 5065016 |
Radioactive well logging to determine vertical brine flow |
Nov. 12, 1991 |
| 5045692 |
Simultaneous fluid flow and fluid density measurements using rotameter and nuclear technology |
Sep. 3, 1991 |
| 5036200 |
Device for counting particles of ionizing radiation and its application to implementing a method of measuring the rate of leakage between the primary and secondary circuits of a steam generato |
Jul. 30, 1991 |
| 4983841 |
Non-invasive inspection |
Jan. 8, 1991 |
| 4918313 |
Device for counting particles of ionizing radiation and its application to implementing a method of measuring the rate of leakage between the primary and secondary circuits of a steam generato |
Apr. 17, 1990 |
| 4795903 |
Analysis of fluids |
Jan. 3, 1989 |
| 4746795 |
Method of and apparatus for analyzing fluid flows within hollow bodies |
May. 24, 1988 |
| 4697079 |
Analyzing fluid flows within hollow bodies |
Sep. 29, 1987 |
| 4232224 |
Nuclear reactor primary coolant loop flowmeter with phase shift tracking compensation |
Nov. 4, 1980 |
| 4197456 |
Flowmeter for liquids |
Apr. 8, 1980 |
| 4166216 |
Methods and apparatus for determining dynamic flow characteristics of production fluids in a well bore |
Aug. 28, 1979 |
| 4166215 |
Methods and apparatus for determining dynamic flow characteristics of production fluids in a well bore |
Aug. 28, 1979 |
| 4107525 |
Flowmeter device and method for determining velocity of a fluid |
Aug. 15, 1978 |
| 4041994 |
Dose dispenser for radioactive gas |
Aug. 16, 1977 |
| 4035646 |
Flow monitoring system |
Jul. 12, 1977 |
| 3961189 |
Device for monitoring activity of gases |
Jun. 1, 1976 |
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