| Patents for G01L 21 - Vacuum gauges (1,613) |
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| 02/05/2004 | WO2004011895A1 Pressure controlled degas system for hot cathode ionization pressure gauges |
| 02/05/2004 | US20040020301 Apparatus and methods for heat loss pressure measurement |
| 02/05/2004 | US20040020233 Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus |
| 02/03/2004 | US6687675 Message storage device |
| 01/29/2004 | US20040017202 Pressure controlled degas system for hot cathode ionization pressure gauges |
| 01/07/2004 | CN2598132Y Detachable metal thermo ionization vacuum bare gauge |
| 01/06/2004 | US6672171 Combination differential and absolute pressure transducer for load lock control |
| 01/06/2004 | CA2087629C Pressure transducer with quartz crystal of singly rotated cut for increased pressure and temperature operating range |
| 12/24/2003 | WO2003106954A2 Vacuum gauge |
| 12/17/2003 | EP1125286B1 Perceptual weighting device and method for efficient coding of wideband signals |
| 12/17/2003 | CN1461944A Vacuum degree measuring instrument |
| 12/11/2003 | WO2003103005A1 Apparatus for measuring total pressure and partial pressure with common electron beam |
| 12/10/2003 | CN1461493A Cleaning method and etching method |
| 12/09/2003 | US6658941 Apparatus and methods for heat loss pressure measurement |
| 12/04/2003 | WO2003069296A3 Electrified vacuum panel |
| 11/05/2003 | CN1127055C Perceptual weighting device and method for efficient coding of wideband sound signals and cellular communication system |
| 11/04/2003 | US6642641 Apparatus for measuring total pressure and partial pressure with common electron beam |
| 10/29/2003 | CN1125978C In-line detection method for vacuum level of discharge type vacuum arc quenching chamber |
| 10/16/2003 | WO2003085369A1 Determination of the gas pressure in an evacuated thermal insulating board (vacuum panel) by using a heat sink and test layer that are integrated therein |
| 10/16/2003 | WO2003073058A3 Pressure gauge |
| 10/09/2003 | US20030188545 Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor |
| 10/08/2003 | CN1123463C Bidirectional safety prompting system for vehicle with radio communication service |
| 10/01/2003 | CN1445520A Pocket sized tester for high voltage vacuum tube |
| 09/16/2003 | US6619131 Combination pressure sensor with capacitive and thermal elements |
| 09/11/2003 | DE10215213C1 Gas pressure in sheet-enveloped evacuated thermal insulation panel determining device, has built-in covered metal plate acting as thermal reservoir |
| 09/04/2003 | WO2003073058A2 Pressure gauge |
| 08/21/2003 | WO2003069297A1 Wire vacuum sensor and vacum panel with tape rheophores to such a sensor |
| 08/21/2003 | WO2003069296A2 Electrified vacuum panel |
| 08/21/2003 | CA2455570A1 Electrified vacuum panel |
| 08/06/2003 | EP1125284B1 High frequency content recovering method and device for over-sampled synthesized wideband signal |
| 08/06/2003 | EP1125276B1 A method and device for adaptive bandwidth pitch search in coding wideband signals |
| 07/30/2003 | EP1125285B1 Periodicity enhancement in decoding wideband signals |
| 07/29/2003 | US6598483 Capacitive vacuum sensor |
| 07/24/2003 | US20030136762 Method for in-line monitoring of via/contact holes etch process based on test structures in semiconductor wafer manufacturing |
| 07/16/2003 | CN2560933Y High-precision vertical Maishi vacuometer |
| 07/02/2003 | EP1097361B1 Pressure-measuring cell, pressure-measuring device and method for monitoring pressure within a chamber |
| 06/25/2003 | CN1112580C Very high vacuity micro-ionization meter with very low gas absorption and release rates |
| 05/29/2003 | US20030098290 Emission spectroscopic processing apparatus and plasma processing method using it |
| 05/29/2003 | US20030097876 Apparatus and methods for heat loss pressure measurement |
| 05/20/2003 | US6567775 Fusion of audio and video based speaker identification for multimedia information access |
| 05/20/2003 | US6566884 Ionization vacuum pressure gauge |
| 04/29/2003 | US6553841 Pressure transducer assembly |
| 04/01/2003 | US6542863 Fast codebook search method for MPEG audio encoding |
| 04/01/2003 | US6540885 Profile control of oxide trench features for dual damascene applications |
| 03/27/2003 | US20030057953 Ionization vacuum pressure gauge |
| 03/19/2003 | CN1403791A Vacuum detecting method and device for electrostatic charge arc extinguishing chamber with shielding cover |
| 03/19/2003 | CN1403790A Vacuum measuring instrument for vacuum switch with undetached arc extinguishing chamber |
| 02/19/2003 | CN2537008Y Vacuum microelectron pressure sensor |
| 02/04/2003 | US6515482 Ionization vacuum gauge |
| 01/16/2003 | US20030010129 Combination differential and absolute pressure transducer for load lock control |
| 12/18/2002 | EP1267153A1 Micro high-vacuum pressure sensor |
| 12/12/2002 | US20020186017 Micro high-vacuum pressure sensor |
| 11/07/2002 | US20020163345 Vacuum gauge using peltier tip |
| 11/05/2002 | US6476612 Louvered beam stop for lowering x-ray limit of a total pressure gauge |
| 11/05/2002 | US6474172 Method for measuring the gas pressure in a container, and devices for its application |
| 11/05/2002 | US6474171 Vacuum gauge |
| 10/24/2002 | US20020153820 Apparatus for measuring total pressure and partial pressure with common electron beam |
| 10/10/2002 | DE10117024A1 Vacuum panel internal pressure measuring method detects deformation of vacuum panel surface upon evacuation of suction cup applied to latter |
| 09/25/2002 | CN1370700A Bidirectional safety prompting system for vehicle with radio communiation service |
| 09/19/2002 | US20020129657 Combination pressure sensor with capactive and thermal elements |
| 07/31/2002 | CN1088515C Sensitive film-cathode composite type pressure sensor |
| 07/31/2002 | CN1088514C Microcavity-inflated type vacuum microelectronic pressure sensor |
| 07/11/2002 | WO2002054429A1 Vacuum sensor for medium-voltage vacuum circuit breaker |
| 06/27/2002 | WO2002050884A1 Cleaning and etching methods and their apparatuses |
| 06/27/2002 | WO2002050883A1 Cleaning method and etching method |
| 06/27/2002 | DE4324119C2 Verfahren zur Wandlung eines gemessenen Signals, Wandler sowie Messanordnung und Pirani-Messschaltung Method for converting a measured signal transducer and measuring arrangement and Pirani circuit |
| 05/07/2002 | US6382031 Foil manometer |
| 04/24/2002 | CN1083575C Helium leakage detector |
| 02/26/2002 | US6351131 Species-selective pressure gauge with extended operation |
| 02/14/2002 | US20020019711 Anticorrosive vacuum sensor |
| 02/12/2002 | CA2025074C Versatile, overpressure proof, absolute pressure sensor |
| 01/31/2002 | US20020011114 Capacitive vacuum sensor |
| 01/17/2002 | WO2002004911A1 Pressure monitoring with two vibrating plates |
| 01/17/2002 | DE10033182A1 Vorrichtung und Verfahren zur Druckmessung Device and method for pressure measurement |
| 01/09/2002 | CN1330261A Multifunctional vacuum microelectronic sensor and its preparing process |
| 12/26/2001 | CN1328684A Periodicity enhancement in decoding wideband signals |
| 12/26/2001 | CN1328683A High frequency content recovering methd and device for over-sampled synthesized wideband signal |
| 12/26/2001 | CN1328682A Perceptual weighting device and method for efficient coding of wideband signals |
| 12/26/2001 | CN1328681A Method and device for adaptive bandwidth pitch search in coding wideband signals |
| 12/06/2001 | DE10126373A1 Method and device for measuring heat loss pressure measures gas pressure in an environment by using resistive sensor and compensating elements in a common circuit. |
| 11/21/2001 | EP1017976B1 Method for measuring the gas pressure in a container, and devices for its application |
| 11/01/2001 | US20010035051 Vacuum monitor and vacuum sensor |
| 10/24/2001 | EP0968407B1 Foil manometer |
| 10/04/2001 | US20010025531 Gas pressure sensor based on short-distance heat conduction and method for fabricating same |
| 09/04/2001 | US6285192 Penning vacuum meter |
| 08/22/2001 | EP1125286A1 Perceptual weighting device and method for efficient coding of wideband signals |
| 08/22/2001 | EP1125285A1 Periodicity enhancement in decoding wideband signals |
| 08/22/2001 | EP1125284A1 High frequency content recovering method and device for over-sampled synthesized wideband signal |
| 08/22/2001 | EP1125276A1 A method and device for adaptive bandwidth pitch search in coding wideband signals |
| 08/22/2001 | EP0737305B1 Gas friction vacuum gauge with horizontal spinning axis and inclination meter |
| 08/09/2001 | US20010011890 Ionization vacuum gauge |
| 07/25/2001 | CN1305097A In-line detection method for vacuum level of discharge-type vacuum arc-quenching chamber |
| 07/10/2001 | US6257069 Bayard-alpert vacuum gauge with neutralization of x-ray effect |
| 05/31/2001 | DE19957059A1 Vacuum measurement method has a measurement circuit including an auxiliary anode so that a constant current can be applied to one anode while a measurement current is applied to the other, reducing circuit complexity and cost |
| 05/31/2001 | DE19957050A1 Vacuum measuring device, uses propagation of electrons through gas-filled measuring space and evaluation of electron currents at electron collectors |
| 05/30/2001 | CN1297145A 集成真空微电子触觉传感器阵列 Vacuum microelectronic integrated tactile sensor array |
| 05/09/2001 | EP1097361A1 Pressure-measuring cell, pressure-measuring device and method for monitoring pressure within a chamber |
| 05/09/2001 | CN1294294A Technology for obtaining adjustable super-vacuum level by suction method |
| 05/08/2001 | US6227056 Methods of pressure measurement |
| 03/08/2001 | DE19941598A1 Influencing gas diffusion in closed flexible liquid containers involves setting increasing pressure on liquid in container at least temporarily, removing application of pressure when in use |