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Class Information
Number: 250/380
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Including a radiant energy responsive gas discharge device > With means to supply the gas > Radioactive gas, or with gas-borne radioactive material
Description: Subject matter wherein the gas supplied to the electrodes emits, spontaneously, nuclear particulate or electromagnetic energy or has entrained in it other gases or fluent-like materials that emit spontaneously nuclear particulate or electromagnetic energy.
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 |
| 7196631 |
Method of utilizing existing fire alarm systems and existing smoke detectors to detect aerolized radioactive material |
Mar. 27, 2007 |
| 6768116 |
Real-time remotely programmable radioactive gas detecting and measuring system |
Jul. 27, 2004 |
| 6734433 |
Inonization chamber, measuring sequence for the activity of a gas emitting radiation .beta. and method using same |
May. 11, 2004 |
| 6365901 |
Relating to monitoring ion sources |
Apr. 2, 2002 |
| 6331707 |
Electrostatic monitoring |
Dec. 18, 2001 |
| 6288400 |
Portable apparatus for the measurement of environmental radon and thoron |
Sep. 11, 2001 |
| 5550381 |
Event counting alpha detector |
Aug. 27, 1996 |
| 5525804 |
Background canceling surface alpha detector |
Jun. 11, 1996 |
| 5514872 |
High gas flow alpha detector |
May. 7, 1996 |
| 5319208 |
Forced air flow radon detector having electrically conductive inlet and exhaust filter |
Jun. 7, 1994 |
| 5311025 |
Fan-less long range alpha detector |
May. 10, 1994 |
| 5281824 |
Radon detection |
Jan. 25, 1994 |
| 5194737 |
Single and double grid long-range alpha detectors |
Mar. 16, 1993 |
| 5192868 |
Proportional counter detector |
Mar. 9, 1993 |
| 5187370 |
Alternating current long range alpha particle detector |
Feb. 16, 1993 |
| 5184019 |
Long range alpha particle detector |
Feb. 2, 1993 |
| 5055674 |
Electret ionization chamber for monitoring radium and dissolved radon in water |
Oct. 8, 1991 |
| 4990786 |
Method and apparatus for determining the actual artificial aerosol alpha activity concentration in the air |
Feb. 5, 1991 |
| 4972081 |
Detection of contaminants in air |
Nov. 20, 1990 |
| 4924098 |
Nuclear radiation level detector |
May. 8, 1990 |
| 4864141 |
Smoke detector with ionization chamber |
Sep. 5, 1989 |
| 4820925 |
Room air monitor for radioactive aerosols |
Apr. 11, 1989 |
| 4788430 |
Contamination and irradiation measuring method and a universal sensor for implementing said method |
Nov. 29, 1988 |
| 4700067 |
Apparatus for checking atmospheric pollution due to alpha particle emitting aerosols |
Oct. 13, 1987 |
| 4633086 |
Input circuit for infrared detector |
Dec. 30, 1986 |
| 4626692 |
Apparatus for detecting iodine isotopes |
Dec. 2, 1986 |
| 4607165 |
Process and apparatus for detecting atmospheric contamination by alpha particle aerosols |
Aug. 19, 1986 |
| 4590372 |
Measuring arrangement for determining the gaseous radioiodine concentration in a carrier gas |
May. 20, 1986 |
| 4585932 |
Monitor system for potentially hazardous radiation and combustion conditions |
Apr. 29, 1986 |
| 4496837 |
Pressure reducing device |
Jan. 29, 1985 |
| 4445037 |
Apparatus for monitoring tritium in tritium contaminating environments using a modified Kanne chamber |
Apr. 24, 1984 |
| 4441024 |
Wide range radioactive gas concentration detector |
Apr. 3, 1984 |
| 4426581 |
Arrangement for measuring radioactivity concentrations |
Jan. 17, 1984 |
| 4342913 |
Portable radiation dosimeter |
Aug. 3, 1982 |
| 4295045 |
Background compensation type plutonium air monitor |
Oct. 13, 1981 |
| 4286155 |
Radioactive gas monitor |
Aug. 25, 1981 |
| 4277682 |
Device for analyzing the activity of a radioactive aerosol as a function of the grain size distribution of its particles |
Jul. 7, 1981 |
| 4262203 |
Alpha particle monitor |
Apr. 14, 1981 |
| RE30323 |
Smoke detector adapted to a smoke sensing apparatus |
Jul. 1, 1980 |
| 4128766 |
Strengthened scintillation cell |
Dec. 5, 1978 |
| 4117333 |
Nuclear fuel element leak detection system |
Sep. 26, 1978 |
| 4092541 |
Method for determining the activity concentration in waste gases for specific nuclides |
May. 30, 1978 |
| 4092539 |
Radiation monitor |
May. 30, 1978 |
| 4091283 |
Extremely sensitive metallic vapor detection |
May. 23, 1978 |
| 4082948 |
Generator monitoring apparatus |
Apr. 4, 1978 |
| 4053777 |
Accident- and tampering-proof attachment means of an object to a stationary support |
Oct. 11, 1977 |
| 4032395 |
Fuel leak detection apparatus for gas cooled nuclear reactors |
Jun. 28, 1977 |
| 4028549 |
Synchronized accumulating radiodetector |
Jun. 7, 1977 |
| 4013888 |
Monitor for atmospheric pollutants |
Mar. 22, 1977 |
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