| Patents for H01J 41 - Discharge tubes and means integral therewith for measuring gas pressure; Discharge tubes for evacuation by diffusion of ions (509) |
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| 10/05/1993 | US5250906 Ionization gauge and method of using and calibrating same |
| 09/15/1993 | EP0560742A1 Plasma generator and associated ionization method |
| 08/31/1993 | US5240381 Exhaust apparatus and vacuum pumping unit including the exhaust apparatus |
| 06/22/1993 | US5221190 Ion sputtering pump with getter module |
| 05/19/1993 | DE4137527A1 Ionisation gas pressure gauge for low pressure measurement - has electron emitting cathode with numerous field emitter elements, and applies positive voltage to extraction grating |
| 05/11/1993 | US5210413 Partial pressure gauge using a cold-cathode ion source for leak detection in vacuum systems |
| 04/27/1993 | US5206594 Apparatus and process for improved photoionization and detection |
| 04/21/1993 | EP0537770A2 Ionization gauge and method of using and calibrating same |
| 03/30/1993 | US5198772 Removable discharge initiating means for cold cathode discharge ionization gauge |
| 03/02/1993 | US5191211 Thermal desorption method for separating volatile additives from vulcanizable rubber |
| 02/04/1993 | WO1993002354A1 Gas detection device and method |
| 01/21/1993 | WO1993001485A1 Fluid sampling system |
| 01/20/1993 | EP0524022A1 Gas detection device and method |
| 01/20/1993 | EP0523699A1 Charged particle beam apparatus |
| 01/19/1993 | US5180288 Microminiaturized electrostatic pump |
| 12/10/1992 | WO1992021883A1 Microminiaturized electrostatic pump and device for determining the flow rate of a gas or liquid |
| 12/03/1992 | DE4117914A1 Miniature electrostatic pump with several spaced electrodes - has each electrode fitted to one side of electrode support body, insulated against them |
| 12/03/1992 | DE4117912A1 Flow speed measuring appts. for gas or liquid - has electrodes on main surfaces of common carrier with throughflow apertures and measures time for ion current to change following voltage change |
| 11/24/1992 | US5165861 Magnetohydrodynamic vacuum pump |
| 11/04/1992 | EP0469019B1 Microminiaturized electrostatic pump |
| 10/20/1992 | US5157333 Discharge initiating means for cold cathode discharge ionization gauge |
| 08/19/1992 | EP0499239A2 Ion pump and vacuum pumping unit using the same |
| 07/08/1992 | CN2109635U Four pole wide range ionozation gauge tube |
| 07/07/1992 | US5128617 Ionization vacuum gauge with emission of electrons in parallel paths |
| 05/07/1992 | DE4034452A1 Glow cathode ionisation manometer - has auxiliary mesh around glow cathode, mesh electrode and ion collector and outer electrode plate |
| 04/14/1992 | CA1298922C Capillary membrane interface for mass spectometer |
| 03/31/1992 | US5101167 Accelerator vacuum pipe having a layer of a getter material disposed on an inner surface of the pipe |
| 02/05/1992 | EP0469631A2 Ion pump and vacuum pumping unit using the same |
| 02/05/1992 | EP0469019A1 Microminiaturized electrostatic pump. |
| 10/15/1991 | US5057741 Glow discharge starter having dual gaps |
| 07/30/1991 | US5036290 Synchrotron radiation generation apparatus |
| 06/12/1991 | EP0431233A1 Partial pressure gauge using a cold-cathode ion source for leak detection in vacuum systems |
| 06/09/1991 | WO1991009413A1 Partial pressure measuring cell with cold-cathode ion source for leak detection in vacuum systems |
| 06/09/1991 | CA2045632A1 Partial pressure measuring cell with cold-cathode ion source for leak detection in vacuum systems |
| 06/06/1991 | DE3939571A1 Ion pump with multi-anode structure and close-mounted outlet - has anode magnetic circuits integral with outer vessel |
| 06/04/1991 | US5021702 Electron beam apparatus including a plurality of ion pump blocks |
| 05/21/1991 | US5017836 Electronic feeder for an ion pump |
| 05/08/1991 | EP0426277A2 Accelerator vacuum pipe |
| 04/17/1991 | CN2075386U Thermocouple vacuum tube |
| 02/04/1991 | WO1991002375A1 Microminiaturized electrostatic pump |
| 10/23/1990 | US4965491 Plasma generator |
| 09/19/1990 | EP0388123A2 Synchrotron radiation generation apparatus |
| 04/11/1990 | EP0252113B1 High voltage feedthrough for ion pump |
| 12/26/1989 | US4890029 Electron beam apparatus including plurality of ion pump blocks |
| 10/18/1989 | EP0337530A2 Improved electronic feeder for an ion pump |
| 07/11/1989 | US4847564 Cold-cathode ionization vacuum meter with auxiliary ignition system for very low pressure operation |
| 04/11/1989 | US4820226 Getter pump for hydrogen and hydrocarbon gases |
| 02/21/1989 | US4806765 Method and apparatus for checking the signal path of a measuring system |
| 02/15/1989 | CN1003331B Extreme high vacuum separator |
| 02/07/1989 | US4803356 Method and apparatus for measuring degree of vacuum in an electron microscope |
| 12/20/1988 | US4792763 Hot cathode ionization pressure gauge |
| 10/18/1988 | US4778346 Method for activating a gas phase stabilizer installed within a gas-filled proportional counter |
| 06/22/1988 | EP0271769A1 Penning-type vacuum gauge |
| 06/22/1988 | CN87210360U Cathode conformal structure for high pressure ionization vacuum gauge |
| 03/02/1988 | EP0257394A1 Electron beam apparatus |
| 01/12/1988 | CA1231372A1 Method for activating a gas phase stabilizer installed within a gas-filled proportional counter |
| 12/15/1987 | US4713619 Electronic device for feeding ion pump |
| 08/18/1987 | US4687417 High voltage feedthrough for ion pump |
| 07/02/1987 | WO1987004005A1 High voltage feedthrough for ion pump |
| 04/29/1987 | EP0219557A1 Method and device for checking a measuring connection of a measuring device |
| 03/10/1987 | CA1219087A1 Vacuum gauge |
| 02/03/1987 | US4641060 Method and apparatus using electron cyclotron heated plasma for vacuum pumping |
| 01/15/1987 | WO1987000276A1 Surface ionization pick-up for halogen leak detector |
| 01/13/1987 | US4636680 Vacuum gauge |
| 12/23/1986 | US4631002 Ion pump |
| 11/05/1986 | EP0200641A1 Ion pump with a current proportional to the pumped quantity |
| 08/06/1986 | CN85100570A Extreme high vacuum separator |
| 06/10/1986 | US4594054 Ion pump |
| 06/04/1986 | EP0183307A2 Electronic device for feeding an ion pump with two different tensions and for improved measuring of the pressure in said pump |
| 03/10/1986 | CN85100568A Hot cathode extreme high vacuum gauge |
| 05/07/1985 | US4515528 Hydrocarbon getter pump |
| 12/05/1984 | EP0126987A1 Ionization-gauge |
| 06/19/1984 | CA1169461A1 Apparatus for producing a directed flow of a gaseous medium utilizing the electric wind principle |
| 05/22/1984 | US4450409 Pressure sensor and leak detector |
| 04/25/1984 | EP0106377A2 Ion pump with a cathode of improved structure, particularly for pumping inert gases |
| 08/09/1983 | US4397611 Particle beam instrumentation ion pump |
| 06/21/1983 | US4389165 Ion pump for producing an ultrahigh degree of vacuum |
| 04/19/1983 | US4380720 Apparatus for producing a directed flow of a gaseous medium utilizing the electric wind principle |
| 03/29/1983 | CA1143871A1 Ionisation detector chamber |
| 12/21/1982 | US4364370 Method and apparatus for supplying fluid to an internal combustion engine |
| 06/15/1982 | US4334829 Sputter-ion pump for use with electron tubes having thoriated tungsten cathodes |
| 12/22/1981 | US4307323 Vacuum gauge |
| 11/24/1981 | US4302679 Method of determining the x-ray limit of an ion gauge |
| 10/20/1981 | US4296356 Ionization vacuum gauge circuit |
| 09/22/1981 | CA1109570A1 Dual ionization chamber |
| 06/16/1981 | US4274022 Evacuating device for generating an insulating vacuum around the superconducting winding of a rotor |
| 05/27/1981 | EP0029421A1 Device for generating a directed current of a gaeous medium |
| 10/01/1980 | EP0015942A1 Ionisation detector chamber |
| 08/05/1980 | CA1083219A1 Reliable dynamoelectric machine condition monitor |
| 03/25/1980 | CA1074461A1 Ionization detector |
| 11/15/1979 | WO1979000918A1 Ionisation detector chamber |
| 10/30/1979 | CA1065504A1 Ion detection electrode arrangement |
| 09/11/1979 | US4167687 Smoke detector apparatus and ionization chamber therefor |
| 05/08/1979 | US4153840 Double chamber ionization smoke detector |
| 01/30/1979 | US4137012 Modular getter pumps |
| 10/24/1978 | US4121458 Reliable dynamoelectric machine condition monitor |
| 10/17/1978 | US4121105 Ionization detector |
| 06/27/1978 | US4097195 High vacuum pump |
| 06/06/1978 | US4093913 Vacuum measuring ionization apparatus control |
| 09/27/1977 | US4051376 Ionization detectors |