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Class Information
Number: 250/303
Name: Radiant energy > Radiation tracer methods > Radioactive tracer methods
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 |
| 7323341 |
Stable isotopic identification and method for identifying products by isotopic concentration |
Jan. 29, 2008 |
| 7291836 |
Method and device for continuous determination of lubricating oil consumption of an internal combustion engine |
Nov. 6, 2007 |
| 7172799 |
Radiation flood source and method for producing the same |
Feb. 6, 2007 |
| 7128812 |
Apparatus and method for determining the level in a coke drum |
Oct. 31, 2006 |
| 6740875 |
Gamma watermarking |
May. 25, 2004 |
| 6693277 |
Detection of submicron scale cracks and other surface anomalies using positron emission tomography |
Feb. 17, 2004 |
| 6448564 |
Apparatus, methods, and systems for assaying materials |
Sep. 10, 2002 |
| 6233908 |
Method of introducing a leak trace material into an airbag inflator |
May. 22, 2001 |
| 6227038 |
Radiotracer method for measuring leakage of engine coolant |
May. 8, 2001 |
| 6149593 |
Method and apparatus for detecting beta radiation |
Nov. 21, 2000 |
| 6076009 |
Solid state beta-sensitive surgical probe |
Jun. 13, 2000 |
| 6043486 |
Absolute standard reference materials for low-level concentration measurements |
Mar. 28, 2000 |
| 5929437 |
Encapsulated radioactive tracer |
Jul. 27, 1999 |
| 5851315 |
Process for producing radioisotope source |
Dec. 22, 1998 |
| 5828712 |
Coolant water flow rate test with rubidium nuclear tracer for reactors |
Oct. 27, 1998 |
| 5760394 |
Isotopic taggant method and composition |
Jun. 2, 1998 |
| 5543617 |
Method of measuring flow velocities using tracer techniques |
Aug. 6, 1996 |
| 5532122 |
Quantitation of gamma and x-ray emitting isotopes |
Jul. 2, 1996 |
| 5514869 |
Method for estimating the probabilities of digestive tract doses due to the passage of a solid radioactive particle |
May. 7, 1996 |
| 5473643 |
Corrosion testing using isotopes |
Dec. 5, 1995 |
| 5453615 |
System for radiogenic detection and analysis of microscopic flaws in the surface structure of solid objects |
Sep. 26, 1995 |
| 5347139 |
Dual energy tracer quantitative analysis |
Sep. 13, 1994 |
| 5306911 |
Method for determining the flow rate of aqueous phases in a multiphase flow |
Apr. 26, 1994 |
| 5287273 |
Functional organ images |
Feb. 15, 1994 |
| 5285065 |
Natural gamma ray logging sub |
Feb. 8, 1994 |
| 5250807 |
Sand detector |
Oct. 5, 1993 |
| 5200615 |
Method and apparatus for detecting the presence of fluids |
Apr. 6, 1993 |
| 5191210 |
Produced steam survey device and method |
Mar. 2, 1993 |
| 5187366 |
Sensors for detecting leaks |
Feb. 16, 1993 |
| 5177360 |
Devices and method to confirm the authenticity of art objects |
Jan. 5, 1993 |
| 5150292 |
Method and system for determination of instantaneous and average blood flow rates from digital angiograms |
Sep. 22, 1992 |
| 5128266 |
Method for testing the radioactivity of objects containing metal or concrete |
Jul. 7, 1992 |
| 5051596 |
Autography marking tape |
Sep. 24, 1991 |
| 5049743 |
Surface located isotope tracer injection apparatus |
Sep. 17, 1991 |
| 5047632 |
Method for determining dynamic flow characteristics of multiphase flows |
Sep. 10, 1991 |
| 5001342 |
Radioactive tracer cement thickness measurement |
Mar. 19, 1991 |
| 5001343 |
Apparatus and process for testing leaks in packaging for integrated circuits |
Mar. 19, 1991 |
| 4992255 |
Capillary depletion method for quantifying transcytosis through the blood-brain barrier |
Feb. 12, 1991 |
| 4983841 |
Non-invasive inspection |
Jan. 8, 1991 |
| 4966233 |
Tracer deployment tools |
Oct. 30, 1990 |
| 4965450 |
Radioactive assay for measuring water absorption by humectants |
Oct. 23, 1990 |
| 4939667 |
Signal processing method for analyzing autoradiograph |
Jul. 3, 1990 |
| 4933554 |
Method of producing a carrier for a plurality of radioactive samples |
Jun. 12, 1990 |
| 4922748 |
Method for monitoring thinning of pipe walls and piping component for use therewith |
May. 8, 1990 |
| 4908321 |
Radio-active method for determining trace amounts of peroxide |
Mar. 13, 1990 |
| 4894539 |
Leak detector |
Jan. 16, 1990 |
| 4876056 |
Flow measurement |
Oct. 24, 1989 |
| 4871913 |
Signal processing method in autoradiography |
Oct. 3, 1989 |
| 4871480 |
Audoradiography enhancer and method of use |
Oct. 3, 1989 |
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