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Class Information
Number: 250/379
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Including a radiant energy responsive gas discharge device > With means to supply the gas
Description: Subject matter combined with means to move or permit movement of gas to, through, or away from the space between the electrodes.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7368726 |
Method and apparatus for detecting high-energy radiation using a pulse mode ion chamber |
May. 6, 2008 |
| 7196336 |
Apparatus for injecting plasma gas in atmosphere |
Mar. 27, 2007 |
| 6765198 |
Enhancements to ion mobility spectrometers |
Jul. 20, 2004 |
| 6717153 |
Apparatus and methods for monitoring emissions |
Apr. 6, 2004 |
| 6455859 |
Selective flow path alpha particle detector and method of use |
Sep. 24, 2002 |
| 6429020 |
Flashback detection sensor for lean premix fuel nozzles |
Aug. 6, 2002 |
| 6023169 |
Electron capture detector |
Feb. 8, 2000 |
| 5920072 |
Ionization detector |
Jul. 6, 1999 |
| 5861629 |
Method of and device for the quantitative detection of material in a sample |
Jan. 19, 1999 |
| 5804828 |
Method and apparatus for optimizing the sensitivity and linearity of an electron capture detector |
Sep. 8, 1998 |
| 5773833 |
Photo-ionization detector for volatile gas measurement |
Jun. 30, 1998 |
| 5760291 |
Method and apparatus for mixing column effluent and make-up gas in an electron capture detector |
Jun. 2, 1998 |
| 5679958 |
Beta particle monitor for surfaces |
Oct. 21, 1997 |
| 5561344 |
Photo-ionization detector for detecting volatile organic gases |
Oct. 1, 1996 |
| 5550381 |
Event counting alpha detector |
Aug. 27, 1996 |
| 5539208 |
Surface radiation detector |
Jul. 23, 1996 |
| 5393979 |
Photo-ionization detector for detecting volatile organic gases |
Feb. 28, 1995 |
| 5345083 |
X-ray detector comprising an improved entrance window |
Sep. 6, 1994 |
| 5324948 |
Autonomous mobile robot for radiologic surveys |
Jun. 28, 1994 |
| 5317159 |
Method of using an electron capture type detector |
May. 31, 1994 |
| 5298754 |
Gas flow Geiger-Mueller type detector and method monitoring ionizing radiation |
Mar. 29, 1994 |
| 5281824 |
Radon detection |
Jan. 25, 1994 |
| 5254861 |
Biological aerosol particle detector and method having an electronic pulse detection means |
Oct. 19, 1993 |
| 5200614 |
Ion mobility spectrometers |
Apr. 6, 1993 |
| 5194737 |
Single and double grid long-range alpha detectors |
Mar. 16, 1993 |
| 5187370 |
Alternating current long range alpha particle detector |
Feb. 16, 1993 |
| 5126676 |
Gas amplified ionization detector for gas chromatography |
Jun. 30, 1992 |
| 5028544 |
Method of analysis of organic compounds in chromatography and apparatus for performing this method |
Jul. 2, 1991 |
| 4990786 |
Method and apparatus for determining the actual artificial aerosol alpha activity concentration in the air |
Feb. 5, 1991 |
| 4880983 |
High pressure xenon ionization detector |
Nov. 14, 1989 |
| 4879472 |
Multiplexed electronically programmable multimode ionization detector for chromatography |
Nov. 7, 1989 |
| 4870281 |
Gas-filled X-ray detector |
Sep. 26, 1989 |
| 4862005 |
Apparatus for detecting radioactive contaminants on hand tools |
Aug. 29, 1989 |
| 4837440 |
Method and apparatus for characterization of aerosols |
Jun. 6, 1989 |
| 4820925 |
Room air monitor for radioactive aerosols |
Apr. 11, 1989 |
| 4804846 |
Photoionization detector for gas chromatography |
Feb. 14, 1989 |
| 4789783 |
Discharge ionization detector |
Dec. 6, 1988 |
| 4775795 |
Method and apparatus for detecting very small concentrations of gases in a gas mixture |
Oct. 4, 1988 |
| 4733086 |
Thermal electron source |
Mar. 22, 1988 |
| 4721858 |
Variable pressure ionization detector for gas chromatography |
Jan. 26, 1988 |
| 4705948 |
Closed-loop pulsed helium ionization detector |
Nov. 10, 1987 |
| 4684807 |
Flow contoured electron capture detector cell |
Aug. 4, 1987 |
| 4680472 |
Process and apparatus for the stabilization of measuring results furnished by an "electron capture" detector with identification of anomalies affecting the detector |
Jul. 14, 1987 |
| 4651008 |
Sample inlet system for an electron capture detector |
Mar. 17, 1987 |
| 4585932 |
Monitor system for potentially hazardous radiation and combustion conditions |
Apr. 29, 1986 |
| 4567368 |
Bipolar pulsed electron capture detectors |
Jan. 28, 1986 |
| 4538066 |
Modulated voltage metastable ionization detector |
Aug. 27, 1985 |
| 4527064 |
Imaging alpha particle detector |
Jul. 2, 1985 |
| 4445037 |
Apparatus for monitoring tritium in tritium contaminating environments using a modified Kanne chamber |
Apr. 24, 1984 |
| 4426580 |
Detection device |
Jan. 17, 1984 |
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