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Class Information
Number: 250/DIG.2
Name: Radiant energy > Radon detection
Description:










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7642520 Method for measuring randon and thoron in air Jan. 5, 2010
7317185 Tamper resistant radon detector Jan. 8, 2008
7312439 Radon progeny monitor Dec. 25, 2007
6288400 Portable apparatus for the measurement of environmental radon and thoron Sep. 11, 2001
6018985 Method and apparatus for measuring unattached radon progeny Feb. 1, 2000
5591979 Device and method for securing an electret in a radon gas detector Jan. 7, 1997
5572020 Simplified radon testing package Nov. 5, 1996
5550381 Event counting alpha detector Aug. 27, 1996
5514872 High gas flow alpha detector May. 7, 1996
5489780 Radon gas measurement apparatus having alpha particle-detecting photovoltaic photodiode surrounded by porous pressed metal daughter filter electrically charged as PO-218 ion accelerator Feb. 6, 1996
5319208 Forced air flow radon detector having electrically conductive inlet and exhaust filter Jun. 7, 1994
5281824 Radon detection Jan. 25, 1994
5225673 Apparatus for measuring the time-integrated volume specific activities and the potential alpha energy of radon and thoron daughters in the air Jul. 6, 1993
5204528 System for determining health risk due to radon progeny and uses thereof Apr. 20, 1993
5179285 Automatically processed alpha-track radon monitor Jan. 12, 1993
5134297 Personal gamma-ray and radon monitor Jul. 28, 1992
5132535 Track registration detector for radon concentrations Jul. 21, 1992
5128539 Apparatus having reduced background for measuring radiation activity in aerosol particles Jul. 7, 1992
5128540 Gamma radiation compensated radon measurement system Jul. 7, 1992
5107108 Programmable controlled-exposure radon measurement system Apr. 21, 1992
5093570 Discriminating electret radioactivity detector system and method for measuring radon concentration Mar. 3, 1992
5070247 Collapsible detector for short and long term measurements of radon gas Dec. 3, 1991
5068538 Radon monitor with sealable detecting chamber Nov. 26, 1991
5065030 Radon detectors Nov. 12, 1991
5059803 Rugged alpha particle counter Oct. 22, 1991
5055674 Electret ionization chamber for monitoring radium and dissolved radon in water Oct. 8, 1991
5053624 Radon control system Oct. 1, 1991
5047634 Method and device to measure the concentration of the various isotopes of radon in a gaseous atmosphere Sep. 10, 1991
5039866 Nuclear track detector method for radon monitoring in buildings through the 210 polonium measurement on glass Aug. 13, 1991
5029248 Electrostatic capture type radon measuring apparatus Jul. 2, 1991
5026986 Radon monitor and control system based upon alpha particle detection Jun. 25, 1991
5026994 Method and apparatus for measuring the size distribution of particles Jun. 25, 1991
5015855 Radiation dosimetry by counting differentially ionized sample areas from heavy charged particle events May. 14, 1991
4999503 Open-type passive radiation detector Mar. 12, 1991
H898 Radon free storage container and method Mar. 5, 1991
4992658 Electret ion chamber for radon monitoring Feb. 12, 1991
4983843 Radon detector Jan. 8, 1991
4980550 Radon measuring device Dec. 25, 1990
4977318 Procedure and means for measuring radon content in the air Dec. 11, 1990
4975575 Method of and apparatus for detecting radon Dec. 4, 1990
4975574 Method of and apparatus for measuring the mean concentration of thoron and/or radon in a gas mixture Dec. 4, 1990
4972081 Detection of contaminants in air Nov. 20, 1990
4963730 Radon progeny detector Oct. 16, 1990
4960998 Method and apparatus for continuously determining gas-carried alpha-radioactivity Oct. 2, 1990
4954716 Package and support structure for radiation detector Sep. 4, 1990
4948970 Radon measuring device Aug. 14, 1990
4926053 Radon monitor May. 15, 1990
4920272 Detector for radon Apr. 24, 1990
4920270 Radon detection Apr. 24, 1990
4920269 Liquid scintillation solution for measuring .sup.222 RN in charcoal Apr. 24, 1990

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