| |
 |
|
Class Information
Number: 250/DIG.2
Name: Radiant energy > Radon detection
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5026994 |
Method and apparatus for measuring the size distribution of particles |
Jun. 25, 1991 |
| 5026986 |
Radon monitor and control system based upon alpha particle detection |
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 |
| 4920263 |
Radon detection system |
Apr. 24, 1990 |
| 4920269 |
Liquid scintillation solution for measuring .sup.222 RN in charcoal |
Apr. 24, 1990 |
| 4920270 |
Radon detection |
Apr. 24, 1990 |
| 4920272 |
Detector for radon |
Apr. 24, 1990 |
|
|
|
