| Patents for G01L 21 - Vacuum gauges (1,613) |
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| 03/06/2001 | US6198105 Miniature ionization gauge utilizing multiple ion collectors |
| 12/27/2000 | EP1062520A1 Measuring device with a microsensor and method for producing the same |
| 12/06/2000 | CN2409528Y On-line vacuum monitor for 10 KV vacuum switch |
| 11/28/2000 | US6153846 Vacuum insulated switching apparatus |
| 10/11/2000 | CN1057385C High vacuum micro-ionization gauze with superlow absorbing-discharging gasrate |
| 10/11/2000 | CN1057384C Step array cathode vacuum microelectronic pressure sensor |
| 09/27/2000 | EP1039285A2 Cold cathode vacuum gauge |
| 09/19/2000 | US6122619 Audio decoder with programmable downmixing of MPEG/AC-3 and method therefor |
| 09/14/2000 | WO2000054018A1 Wide-range pressure gauge |
| 09/07/2000 | DE19907994A1 Ionization manometer ultrahigh vacuum measurement tube, for measuring neutral gas-tight has electrodes electrically connected through ion catcher to socket shaped insulating body |
| 08/17/2000 | DE19903010A1 Pirani pressure measuring arrangement suitable for combination sensors has first and second heating devices are insulated electrically from each other and support carries holding elements |
| 08/15/2000 | US6104487 Plasma etching with fast endpoint detector |
| 07/26/2000 | CN2389362Y Automatic sealing vacuum gauge pipe apparatus |
| 07/12/2000 | EP1017976A1 Method for measuring the gas pressure in a container, and devices for its application |
| 06/29/2000 | DE19855522A1 Vacuum measurement method involves accelerating electrons to energy below gas molecule or atom ionisation energy, tapping with concurrent charge carrier collectors, measuring currents |
| 06/28/2000 | EP1012870A1 Penning vacuum meter |
| 06/27/2000 | US6081121 Ionization gauge and method of using and calibrating same |
| 05/23/2000 | US6067512 Feedback-controlled speech processor normalizing peak level over vocal tract glottal pulse response waveform impulse and decay portions |
| 05/04/2000 | WO2000025305A1 High frequency content recovering method and device for over-sampled synthesized wideband signal |
| 05/04/2000 | WO2000025304A1 Perceptual weighting device and method for efficient coding of wideband signals |
| 05/04/2000 | WO2000025303A1 Periodicity enhancement in decoding wideband signals |
| 05/04/2000 | WO2000025298A1 A method and device for adaptive bandwidth pitch search in coding wideband signals |
| 04/25/2000 | US6054862 Vacuum chamber bakeout procedure for preventing ion gauge failure |
| 04/04/2000 | US6046456 Miniature ionization gauge utilizing multiple ion collectors |
| 03/22/2000 | CN1050666C Wide measurement range microionization gauge |
| 03/15/2000 | CN2369233Y Infrared optical waveguide temperature vacuum tester |
| 02/23/2000 | EP0980512A1 Bayard-alpert vacuum gauge with neutralization of x-ray effect |
| 02/23/2000 | EP0799413B1 Penning measuring cell with ignition aid |
| 02/15/2000 | US6025723 Miniature ionization gauge utilizing multiple ion collectors |
| 02/15/2000 | US6023979 Apparatus and methods for heat loss pressure measurement |
| 01/27/2000 | WO2000004358A1 Pressure-measuring cell, pressure-measuring device and method for monitoring pressure within a chamber |
| 01/26/2000 | CN2360845Y Switching tube vacuum degree tester |
| 01/12/2000 | CN1240933A Very-high-vacuity micro-ionization meter with very low gas absorption and release rates |
| 01/05/2000 | EP0968407A1 Foil manometer |
| 10/05/1999 | US5962791 Pirani+capacitive sensor |
| 09/29/1999 | CN1230004A Vacuum insulated switching apparatus |
| 09/23/1999 | DE19810286A1 Micro-sensor |
| 09/22/1999 | EP0944105A1 Vacuum insulated switching apparatus |
| 09/21/1999 | US5955659 Electrostatically-actuated structures for fluid property measurements and related methods |
| 09/16/1999 | WO1999046605A1 Measuring device with a microsensor and method for producing the same |
| 09/08/1999 | CN2337545Y Intelligent superhigh vacuum cold cathode ionization gauge controller |
| 08/17/1999 | US5939635 Micromechanical pressure sensor-with improved range |
| 07/20/1999 | US5925823 Alpha-particle gas-pressure sensor |
| 07/13/1999 | US5923172 Penning type gauge head with ignition aid |
| 06/01/1999 | US5908988 Optical vacuum pressure gauge |
| 05/26/1999 | CN1217467A Microcavity-inflated type vacuum microelectronic pressure sensor |
| 05/19/1999 | CN2319799Y Vacuum degree measuring device of arc-chutes |
| 04/01/1999 | WO1999015869A1 Method for measuring the gas pressure in a container, and devices for its application |
| 03/03/1999 | EP0899774A2 Miniature ionization gauge utilizing multiple collectors |
| 02/24/1999 | CN2308893Y Non-condensition gas vacuum degree measuring meter |
| 02/17/1999 | EP0896659A1 Temperature compensation circuit for a heat conduction vacuum gauge |
| 01/27/1999 | EP0893677A1 Apparatus and methods for heat loss pressure measurement |
| 12/10/1998 | DE19734914C1 Pressure sensor using Penning principle |
| 12/10/1998 | DE19723333A1 Pressure sensor for self=monitoring rotation rate sensor |
| 11/26/1998 | WO1998053293A1 Vacuum detection system |
| 11/12/1998 | WO1998050768A1 Bayard-alpert vacuum gauge with neutralization of x-ray effect |
| 11/12/1998 | CA2288798A1 Bayard-alpert vacuum gauge with neutralization of x-ray effect |
| 10/29/1998 | WO1998048445A1 Penning vacuum meter |
| 10/29/1998 | DE19717263A1 Penning-Vakuummeter Penning vacuum gauge |
| 10/01/1998 | WO1998043058A1 Foil manometer |
| 09/24/1998 | DE19711874A1 Folienmanometer Folienmanometer |
| 09/01/1998 | US5801535 Ionization gauge and method of using and calibrating same |
| 08/19/1998 | CN1190736A Sensitive film-cathode composite type pressure sensor |
| 07/08/1998 | EP0689669B1 Temperature compensation in a regulated heat conduction vacuum gauge |
| 07/07/1998 | US5777233 Gas-friction vacuum indicator with a gas-friction sensor rotating about a fixed axis of rotation |
| 06/18/1998 | WO1998026264A1 Method and device for detecting gas pressures in the vacuum range |
| 06/18/1998 | DE19651487A1 Verfahren und Vorrichtung zur Erfassung von im Vakuumbereich liegenden Gasdrücken Method and apparatus for detection of lying in the vacuum range gas pressures |
| 06/17/1998 | CN2284386Y Vacuum degree detector for jet well tube injector |
| 06/17/1998 | CN2284385Y Vacuum detecting probe for latex gloves |
| 06/16/1998 | US5767629 Device for starting and/or maintaining a discharge and cold cathode vacuum gauge incorporating such a device |
| 05/20/1998 | EP0842527A1 Gas-discharge device with electrodes for use in vacuum technology |
| 05/20/1998 | EP0689670B1 Heat conductance vacuum gauge with measuring cell, measuring instrument and connecting cable |
| 01/07/1998 | CN2272167Y Special power supply for measuring experiment |
| 12/18/1997 | DE19623544A1 Location method for leakages in vessel by photo-acoustic signal for industrial applications |
| 12/02/1997 | US5693888 Heat conductance vacuum gauge with measuring cell, measuring instrument and connecting cable |
| 11/06/1997 | WO1997041414A1 Temperature compensation circuit for a heat conduction vacuum gauge |
| 11/06/1997 | DE19617238A1 Schaltung zur Temperaturkompensation eines Wärmeleitungsvakuummeters Circuit for temperature compensation of thermal conductivity vacuum gauge |
| 10/08/1997 | EP0799413A1 Penning measuring cell with ignition aid |
| 10/01/1997 | CN2263786Y High-vacuum micro-ionization gauge with extra-low suction and exhaustion rate |
| 09/10/1997 | CN1035840C Tube for wide-range thermocouple gauge used under constant temp |
| 05/27/1997 | US5633465 Pirani pressure sensor |
| 04/03/1997 | WO1997012216A1 Vacuum absolute pressure measurement with resonator to excess temperature |
| 03/27/1997 | DE19535651A1 Verfahren und Vorrichtung zur Absolutdruckmessung in gasverdünnten Räumen Method and apparatus for measuring absolute pressure in gas diluted rooms |
| 03/25/1997 | US5613887 Jet propulsion unit condition indicator |
| 03/19/1997 | CN1145474A High vacuum micro-ionization gauze with superlow absorbing-discharging gas rate |
| 03/05/1997 | CN1144333A Step array cathode vacuum microelectronic pressure sensor |
| 03/04/1997 | US5608168 Temperature compensation in a regulated heat conduction vacuum gauge |
| 02/13/1997 | WO1997005645A1 Gas-discharge device with electrodes for use in vacuum technology |
| 02/12/1997 | CN1142605A Helium leakage detector |
| 02/11/1997 | US5602441 Vacuum ionization gauging tube |
| 02/06/1997 | DE19528314A1 In der Vakuumtechnik einsetzbares Gerät mit Elektroden für eine Gasentladung In vacuum technology use device with electrodes for gas discharge |
| 01/28/1997 | US5597957 Microvacuum sensor having an expanded sensitivity range |
| 01/23/1997 | DE19526394A1 Vacuum detection system for vacuum switch tube |
| 01/08/1997 | EP0752716A1 Apparatus for starting and/or sustaining a discharge and cold cathode vacuum gauge using the same |
| 12/10/1996 | US5583297 Process for evaluating the output signals of two pressure sensors and a pressure measuring arrangement with two pressure measuring sensors and a pressure measuring head |
| 10/22/1996 | US5568053 Ionization gauge having a non-time varying magnetic field generator of separated opposed magnets |
| 10/22/1996 | US5567882 Pressure sensor using a field emission cold cathode |
| 10/16/1996 | EP0737305A1 Gas friction vacuum indicator with a gas friction sensor that rotates around a fixed axis of rotation |
| 10/02/1996 | EP0735354A1 Micromechanical pressure gauge having extended sensor range |
| 09/25/1996 | CN2236130Y Vacuum pump indicator |