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Class Information
Number: 250/382
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Including a radiant energy responsive gas discharge device > With means to ionize the gas
Description: Subject matter including a radioactive material or a source of electromagnetic or particulate radiation which detaches electrons from the molecules of the gas between the electrodes.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7456411 |
He-3 neutron proportional counter with internal leakage detection and related method |
Nov. 25, 2008 |
| 7271395 |
Device and method for the measurement of depth of interaction using co-planar electrodes |
Sep. 18, 2007 |
| 7196325 |
Glow discharge and photoionizaiton source |
Mar. 27, 2007 |
| 7186986 |
Radiation detector with converters |
Mar. 6, 2007 |
| 7180070 |
Radiation detector |
Feb. 20, 2007 |
| 7180076 |
Photoionization detectors, ionization chambers for use in photoionization detectors, and methods of use of photoionization detectors |
Feb. 20, 2007 |
| 7135688 |
Apparatus and method for the detection of the energy of ionizing electro-magnetic radiation |
Nov. 14, 2006 |
| 7134761 |
Arrangement and a method for emitting light |
Nov. 14, 2006 |
| 7105831 |
Ambient air alpha particles ionization detector |
Sep. 12, 2006 |
| 7071674 |
Micro-electrometer |
Jul. 4, 2006 |
| 6982549 |
Micro-electrometer |
Jan. 3, 2006 |
| 6974641 |
Thermal barrier coating with thermoluminescent indicator material embedded therein |
Dec. 13, 2005 |
| 6967485 |
Automatic drive adjustment of ultraviolet lamps in photo-ionization detectors |
Nov. 22, 2005 |
| 6940074 |
Devices incorporating soft ionization membrane |
Sep. 6, 2005 |
| 6865896 |
Storage unit and refrigerator |
Mar. 15, 2005 |
| 6765198 |
Enhancements to ion mobility spectrometers |
Jul. 20, 2004 |
| 6646444 |
Plug-in photoionization sensor |
Nov. 11, 2003 |
| 6630664 |
Atmospheric pressure photoionizer for mass spectrometry |
Oct. 7, 2003 |
| 6627878 |
(Chemical agent) point detection system (IPDS) employing dual ion mobility spectrometers |
Sep. 30, 2003 |
| 6610986 |
Soft ionization device and applications thereof |
Aug. 26, 2003 |
| 6486468 |
High resolution, high pressure xenon gamma ray spectroscopy using primary and stimulated light emission |
Nov. 26, 2002 |
| 6456681 |
Neutron flux measuring apparatus |
Sep. 24, 2002 |
| 6365902 |
Radiation detector, an apparatus for use in radiography and a method for detecting ionizing radiation |
Apr. 2, 2002 |
| 6320261 |
High aspect ratio metallization structures for shallow junction devices, and methods of forming the same |
Nov. 20, 2001 |
| 6320388 |
Multiple channel photo-ionization detector for simultaneous and selective measurement of volatile organic compound |
Nov. 20, 2001 |
| 6288400 |
Portable apparatus for the measurement of environmental radon and thoron |
Sep. 11, 2001 |
| 5981952 |
Dynamic focusing apparatus for cathode-ray tube device |
Nov. 9, 1999 |
| 5925823 |
Alpha-particle gas-pressure sensor |
Jul. 20, 1999 |
| 5923172 |
Penning type gauge head with ignition aid |
Jul. 13, 1999 |
| 5920072 |
Ionization detector |
Jul. 6, 1999 |
| 5877502 |
Radiation monitor for liquids |
Mar. 2, 1999 |
| 5861629 |
Method of and device for the quantitative detection of material in a sample |
Jan. 19, 1999 |
| 5855850 |
Micromachined photoionization detector |
Jan. 5, 1999 |
| 5773833 |
Photo-ionization detector for volatile gas measurement |
Jun. 30, 1998 |
| 5739699 |
Method and apparatus for ion discrimination in an electron capture detector |
Apr. 14, 1998 |
| 5731585 |
Voigt filter |
Mar. 24, 1998 |
| 5679958 |
Beta particle monitor for surfaces |
Oct. 21, 1997 |
| 5663567 |
Apparatus for detecting alpha radiation in difficult access areas |
Sep. 2, 1997 |
| 5633501 |
Combination photoelectric and ionization smoke detector |
May. 27, 1997 |
| 5572137 |
Portable device for detecting UV light ionizable gas or vapor |
Nov. 5, 1996 |
| 5561344 |
Photo-ionization detector for detecting volatile organic gases |
Oct. 1, 1996 |
| 5550381 |
Event counting alpha detector |
Aug. 27, 1996 |
| 5543331 |
Method of detection of alien matter contents in gases |
Aug. 6, 1996 |
| 5479022 |
Electron capture detector with guard electrode |
Dec. 26, 1995 |
| 5431714 |
Process for investigating particles situated in a gas |
Jul. 11, 1995 |
| 5393979 |
Photo-ionization detector for detecting volatile organic gases |
Feb. 28, 1995 |
| 5250906 |
Ionization gauge and method of using and calibrating same |
Oct. 5, 1993 |
| 5220284 |
Method and device for measuring the concentration of particles in a gas by ionization of the particles |
Jun. 15, 1993 |
| 5200614 |
Ion mobility spectrometers |
Apr. 6, 1993 |
| 5198772 |
Removable discharge initiating means for cold cathode discharge ionization gauge |
Mar. 30, 1993 |
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