| Patents for G01H 13 - Measuring resonant frequency (1,015) |
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| 11/03/2005 | WO2005103674A2 Portable fluid sensing system and sensing method using a flexural resonator |
| 11/03/2005 | DE19634663B4 Schwingungs-Meßgerät Vibration measuring instrument |
| 11/03/2005 | DE102004036359A1 Vibrating sensor tank level measurement verification procedure uses comparison of amplitude and frequency at empty and full stages with fixed criteria |
| 10/25/2005 | US6957565 Includes oscillating a tuning fork resonator in a fluid; use in-line monitoring of various physical and electrical properties of fluids flowing in a conduit, e.g. viscosity and dielectric constant |
| 10/20/2005 | US20050234645 System for forecasting slope failure based on sounds from the earth |
| 10/18/2005 | US6956476 Method and apparatus for detecting a target material in a sample by pre-screening the sample for piezoelectric resonance |
| 10/13/2005 | US20050226773 Multiple modes acoustic wave sensor |
| 10/13/2005 | US20050223803 Method and apparatus for measuring and orienting golf club shaft |
| 10/13/2005 | US20050223802 Method and apparatus for measuring and orienting golf club shaft |
| 10/13/2005 | US20050223801 Apparatus for generating and measuring bending vibration in a non-ferromagnetic pipe without physical contact |
| 10/06/2005 | US20050217379 Method and apparatus for measuring and orienting golf club shaft |
| 09/29/2005 | DE19620832B4 Verfahren zum Einstellen der Eigenfrequenz einer Doppelachsenschwingungskonstruktion A method of adjusting the natural frequency of a dual-axis vibratory structure |
| 09/21/2005 | EP1577660A1 Measuring method and device for vibration frequency of multi-cantilever |
| 09/20/2005 | US6947852 Monitoring and correcting for non-translational motion in a resonance measurement apparatus |
| 09/14/2005 | EP1575332A1 Resonance frequency sensing method, resonance frequency selecting method, and resonance frequency sensor |
| 08/25/2005 | US20050183492 Carbon nanotube based resonant-circuit sensor |
| 08/09/2005 | CA2363917C Method and apparatus for estimating tire air pressure |
| 08/04/2005 | US20050167596 System and method for multiple mode flexible excitation in sonic infrared imaging |
| 07/28/2005 | US20050164304 Apparatus comprising infrared camera for rapidly screening arrays of diverse materials on single substrate surfaces; combinatorial synthesis and characterization of libraries of diverse materials |
| 07/26/2005 | US6920789 System for watching and forecasting changes in natural phenomena and weather based on sounds from the earth |
| 07/19/2005 | US6918302 Apparatus and method for measuring resonance in bearing device |
| 07/19/2005 | US6918301 Methods and systems to detect defects in an end effector for conditioning polishing pads used in polishing micro-device workpieces |
| 07/14/2005 | US20050151083 System and method for generating chaotic sound for sonic infrared imaging of defects in materials |
| 07/12/2005 | US6915695 Method and apparatus for measuring and orienting golf club shaft |
| 06/14/2005 | US6904786 A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a cantilever, connected to a measurement circuit |
| 06/07/2005 | US6903530 Electric motor controller resonance frequency detection apparatus |
| 06/01/2005 | EP1536419A2 Apparatus and method for detecting and compensating for resonance in a data storage system |
| 05/26/2005 | US20050111125 Apparatus and method for detecting and compensating for resonance frequency in data storage system |
| 05/25/2005 | EP1532433A2 System for infrared imaging by inducing acoustic chaos |
| 05/05/2005 | US20050092088 Transducer-based sensor system and method |
| 05/04/2005 | EP1528394A2 Transducer-based sensor system and method |
| 04/30/2005 | CA2486295A1 Transducer-based sensor system and method |
| 04/07/2005 | US20050072234 System and method for detecting structural damage |
| 03/29/2005 | US6873752 Tuneable fiber optic sensor |
| 03/09/2005 | CN1192238C Tester for measuring frequency of quartz oscillator |
| 03/02/2005 | CN1589397A Device amd method for evaluating rigidity of bearing device, device and method for manufacturing bearing device, and bearing device |
| 03/02/2005 | CN1191463C Apparatus and method for mornitoring axle fracture or early gear slippage in gear system |
| 02/24/2005 | US20050041898 Device amd method for evaluating rigidity of bearing device, device and method for manufacturing bearing device, and bearing device |
| 02/24/2005 | DE10333410A1 Verfahren und Vorrichtung zur Bestimmung der Eigenfrequenzen eines Lagersystems mit einer gelagerten Welle Method and apparatus for determining the natural frequencies of a storage system with a mounted shaft |
| 02/22/2005 | US6859143 Method, computer program, control apparatus and arrangement for detecting the touch contact of an operator-controlled element as well as the operator-controlled element |
| 02/10/2005 | US20050031246 Tuneable fiber optic sensor |
| 02/03/2005 | US20050022600 Method and device to determine the natural frequencies of a bearing system having a shaft arranged on bearings |
| 02/03/2005 | DE10330327A1 Membrane support stress measurement procedure uses characteristic vibrations from external excitation of a convex area dynamically decoupled by elliptical ring |
| 02/01/2005 | US6849460 Classifying preferential particles in sample; obtain substrate, synthesize microarray, expose to gas, monitor infrared emission from sample |
| 12/14/2004 | US6829938 Method and apparatus for selecting trees for harvest |
| 12/02/2004 | US20040239279 Electric motor controller resonance frequency detection apparatus |
| 11/23/2004 | US6820469 Microfabricated teeter-totter resonator |
| 11/18/2004 | WO2004083969A3 Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| 11/11/2004 | WO2004096007A2 Methods and devices for mechanical resonator evaluation |
| 11/11/2004 | CA2564854A1 Methods and devices for mechanical resonator evaluation |
| 11/10/2004 | CN1545616A Method and apparatus for model based shrouded bellows stiffness determination |
| 10/28/2004 | US20040211260 Methods and devices for determining the resonance frequency of passive mechanical resonators |
| 09/30/2004 | WO2004083969A2 Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| 09/30/2004 | CA2518697A1 Method and system for monitoring the performance of a pipe containing a pressurised fluid |
| 09/23/2004 | US20040182159 Apparatus and method for measuring resonance in bearing device |
| 09/16/2004 | WO2004020993A3 System for infrared imaging by inducing acoustic chaos |
| 09/15/2004 | CN1166934C Detection method of loosening slot wedge of rotating motor having corrugeted plate fixing structure |
| 09/10/2004 | WO2004077402A1 Dip filter frequency characteristic decision method |
| 09/10/2004 | WO2004077401A1 Dip filter frequency characteristic decision method |
| 07/22/2004 | WO2004061427A1 Measuring method and device for vibration frequency of multi-cantilever |
| 07/01/2004 | WO2004040261A3 Acoustic array analytical system |
| 07/01/2004 | US20040123665 Nondestructive detection of reinforcing member degradation |
| 06/24/2004 | WO2004054316A1 Resonance frequency sensing method, resonance frequency selecting method, and resonance frequency sensor |
| 06/17/2004 | WO2004032050A3 Low-power signal processing using mems |
| 06/16/2004 | EP1428001A1 Methods and apparatus for model based shrouded bellows stiffness determinations |
| 05/13/2004 | WO2004040261A2 Acoustic array analytical system |
| 05/13/2004 | US20040089812 System and method for multiple mode flexible excitation and acoustic chaos in sonic infrared imaging |
| 05/13/2004 | US20040089070 Methods and systems to detect defects in an end effector for conditioning polishing pads used in polishing micro-device workpieces |
| 05/12/2004 | EP1418663A1 Electric motor controller resonance frequency detection apparatus |
| 05/06/2004 | US20040088058 Diagnostic for poorly tuned control loops |
| 04/28/2004 | EP0842403B1 Stress testing method and apparatus |
| 04/27/2004 | US6728645 Method and system for automatic identification of objects type according to their characteristic spectrum of vibration frequencies |
| 04/22/2004 | US20040074303 Method and apparatus for characterizing materials by using a mechanical resonator |
| 04/22/2004 | US20040074302 Method and apparatus for characterizing materials by using a mechanical resonator |
| 04/15/2004 | WO2004032050A2 Low-power signal processing using mems |
| 04/15/2004 | US20040069064 Method and apparatus for selecting trees for harvest |
| 04/08/2004 | US20040066977 Low-power signal processing using MEMS |
| 04/06/2004 | CA2334974C Measuring the speed of sound of a gas |
| 03/24/2004 | CN1484539A Method and apparatus for measuring and orienting golf club shaft |
| 03/23/2004 | US6711508 Method and apparatus for estimating tire air pressure |
| 03/11/2004 | WO2004020993A2 System for infrared imaging by inducing acoustic chaos |
| 02/26/2004 | US20040039760 Monitoring and correcting for non-translational motion in a resonance measurement apparatus |
| 02/17/2004 | US6691550 Estimator for determining resonant frequency and Q |
| 01/20/2004 | US6679121 Blade vibration test apparatus and method |
| 01/01/2004 | US20040000194 System for watching and forecasting changes in natural phenomena and weather based on sounds from the earth |
| 11/26/2003 | EP1363806A1 Method, computer program, control and or regulating device, device for detecting contact with an operating element, and corresponding operating element |
| 11/12/2003 | EP1361429A2 Method and apparatus for characterizing materials by using mechanical resonator |
| 11/12/2003 | EP1361428A2 Method and apparatus for characterizing materials by using a mechanical resonator |
| 10/22/2003 | EP1099112B1 Measuring the speed of sound in a gas with a small spherical resonator and a non radial mode for analysis of gas mixtures |
| 09/03/2003 | EP1339465A1 Method and apparatus for measuring and orienting golf club shaft |
| 08/14/2003 | US20030151400 Sensor readout circuit |
| 07/31/2003 | US20030144801 Method, computer program, control and or regulating device, device for detecting contact with an operating element, and corresponding operating element |
| 07/03/2003 | WO2003034005A3 An estimator for determining resonant frequency and q |
| 06/17/2003 | US6580024 Electronic strobe tuning aid |
| 05/15/2003 | US20030089157 Estimator for determining resonant frequency and Q |
| 05/06/2003 | US6558278 Method of dynamically determining the relative stiffness of a golf shaft |
| 04/24/2003 | WO2003034021A1 Device and method for evaluating rigidity of bearing device, device and method for manufacturing bearing device, and bearing device |
| 04/24/2003 | WO2003034005A2 An estimator for determining resonant frequency and q |
| 04/08/2003 | US6546354 Resonance identification extension for a self-balancing rotatable apparatus |
| 04/01/2003 | US6541271 Infrared spectroscopic imaging of libraries |