| Patents for G01V 8 - Prospecting or detecting by optical means (8,157) |
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| 10/27/1992 | US5158291 Ball accelerator for rolling ball games |
| 10/21/1992 | EP0509770A2 Airborne imaging multiband spectrometer |
| 10/16/1992 | WO1992018413A1 Detection systems |
| 10/16/1992 | CA2107333A1 Detection systems |
| 10/15/1992 | WO1992017227A2 Drop detection method and apparatus |
| 10/13/1992 | US5155354 Object detection apparatus |
| 10/13/1992 | US5155350 Light gate with adjustable light transmitter |
| 09/23/1992 | EP0504997A1 Apparatus for detecting objects in sheet form |
| 09/23/1992 | EP0354208B1 Device and method for visual identification of sample positions in plates with multiple wells, and use of the device |
| 09/22/1992 | US5149959 Airborne multiband imaging spectrometer |
| 09/22/1992 | US5149921 Self correcting infrared intrusion detection system |
| 09/16/1992 | CN1064560A In bundle foreign object search and retrieval apparatus |
| 09/16/1992 | CN1018267B Method and equipment for recognizing unwanted material in textile fibres |
| 09/02/1992 | EP0501648A2 In bundle foreign object search and retrieval apparatus |
| 09/02/1992 | CN1018099B Method and device for determining number of people present in determined space |
| 09/01/1992 | US5144286 Photosensitive switch with circuit for indicating malfunction |
| 08/26/1992 | EP0499945A2 Optoelectronic touch sensor |
| 08/25/1992 | US5142160 Method and device for determining the volume of an object on a flat background |
| 08/20/1992 | DE4104937A1 Liq. sensor e.g. for automatic vehicle spray painting system - has choke point in measurement line formed by spring-loaded warning device actuator |
| 08/18/1992 | US5139339 Media discriminating and media presence sensor |
| 08/12/1992 | EP0498429A1 Improved target detector eliminating in-range sensitivity |
| 07/28/1992 | US5133095 Method of and system for supplying electric power to automatic water discharge apparatus |
| 07/22/1992 | EP0494976A1 Obstruction detection apparatus |
| 07/14/1992 | US5130532 Light barrier grid with electrically decoupled emitters and detectors which are operatable in synchronism |
| 07/14/1992 | US5130531 Reflective photosensor and semiconductor light emitting apparatus each using micro Fresnel lens |
| 07/14/1992 | CA1305233C Remote sensing system |
| 07/08/1992 | EP0493908A1 Monitoring the condition of a rotary tool |
| 07/08/1992 | EP0493857A2 Improved method of detecting pre-spotting when dispensing sample |
| 07/07/1992 | US5128882 Device for measuring reflectance and fluorescence of in-situ soil |
| 07/07/1992 | US5128548 Monitoring and recording device for large game animals and other objects |
| 07/02/1992 | DE4041363A1 Transparent object detection arrangement for moving glass bottles - has two light barriers inclined at acute angle with logic circuit for combining their output signals |
| 07/01/1992 | EP0493203A1 Device for contactless detection of moving sheets of glass |
| 06/30/1992 | US5126555 Apparatus for preventing accidental activations of opto-electronic switches due to extraneous light |
| 06/30/1992 | US5125514 Recognizing unwanted material in textile fibers |
| 06/23/1992 | US5123144 Method and apparatus for establishing whether fiber material is contaminated with foreign objects |
| 06/10/1992 | EP0276304B1 Method and apparatus for detecting incongruities, such as air bubbles, in fluid material |
| 06/04/1992 | DE4139515A1 Optical detection and classification of precipitation - using light beam with vertical dimension smaller than largest particle to be detected |
| 05/27/1992 | EP0486637A1 Appliance of open construction for treating hair on the human head. |
| 05/27/1992 | EP0353259B1 Motion sensor |
| 05/27/1992 | DE4115013C1 Photoelectric unit illuminating object to ascertain quality to its material - has deflecting mirror linearly slidable parallel to direction of optical axis of receiving front lens |
| 05/26/1992 | US5117100 Apparatus for and method of optical position detection |
| 05/20/1992 | EP0486430A2 Light barrier |
| 05/20/1992 | EP0485968A2 Semiconductor photoelectric detector having a vertical optical axis |
| 05/20/1992 | EP0485857A2 Sensor system and its application |
| 05/19/1992 | US5115129 Photoelectric device with a lens formed in its housing |
| 05/19/1992 | CA1301327C Process and device for deternining the number of persons in a particular space |
| 05/13/1992 | EP0484877A2 Photo-interrupter |
| 05/13/1992 | EP0484445A1 Electrical switching system |
| 05/12/1992 | US5111591 Protective arrangement for a longitudinally extendible machine component |
| 04/23/1992 | DE4033234A1 Control circuitry for photoelectric components of light barrier - switches components in sequence in multiplex process and detects functional error or fault |
| 04/21/1992 | US5107131 Method and apparatus for edge detection of transparent films |
| 04/14/1992 | US5105084 Pyroelectric infrared sensor with different sized effective light receiving electrode areas and a method of manufacturing a dual pyroelectric element used therein |
| 04/07/1992 | US5103305 Moving object detecting system |
| 04/01/1992 | EP0478447A1 Sensor for impurities in a fluid and its use in a circuit |
| 04/01/1992 | EP0477366A1 Method of setting teaching data in a visual sensor system |
| 03/25/1992 | EP0476361A2 Reflection light barrier |
| 03/19/1992 | DE4028881A1 Protecting gas or liq. delivery system against dry running - using light transmitted via transparent walls to receiver only if without medium |
| 03/17/1992 | US5097476 Laser sensor with external resonance cavity |
| 03/04/1992 | EP0473345A2 Method of and system for supplying electric power to automatic water discharge apparatus |
| 03/01/1992 | CA2050415A1 Method of and system for supplying electric power to water discharge apparatus |
| 02/18/1992 | CA2048737A1 Blasting accessory |
| 02/13/1992 | DE4024983A1 Digital position indicator using scanned code disc - uses control signals to detect failure of light barrier device |
| 02/06/1992 | DE4023704A1 Reflex light barrier with infrared transmission diode - has filter and comparator stages with receiver circuit clamping when transmission diode inactive |
| 02/04/1992 | US5085508 Beam alignment apparatus and method usable with projected beam smoke detector systems |
| 01/28/1992 | US5084620 Method of detecting pre-spotting when dispensing sample |
| 01/28/1992 | US5084617 Fluorescence sensing apparatus for determining presence of native hydrocarbons from drilling mud |
| 12/31/1991 | US5077467 Photoelectric switch and relay system with disabling fail-safe monitoring circuitry |
| 12/31/1991 | US5076260 Sensible body vibration |
| 12/24/1991 | US5075543 Light weight paper sensor using fibers |
| 12/18/1991 | EP0461321A1 Apparatus and method for analyzing the composition of formation fluids |
| 12/18/1991 | EP0386152A4 Millimeter wave imaging device |
| 12/17/1991 | US5073782 Contraband detection system |
| 12/17/1991 | US5073706 Procedure and apparatus for detecting objects moving at varying speeds within a certain area |
| 12/12/1991 | WO1991018534A1 Appliance of open construction for treating hair on the human head |
| 12/12/1991 | DE4117708A1 Open hair treatment arrangement with head position sensing - uses infrared or ultrasonic transmitters and receivers and detects undesirable head position |
| 12/10/1991 | US5072108 Foreign object detecting method and device |
| 11/28/1991 | WO1991018358A1 Device for detecting objects in a sequence of images |
| 11/26/1991 | US5068537 Passenger number sensor system |
| 11/26/1991 | CA1292531C Sensor and method for detecting the presence of air bubbles in liquid |
| 11/21/1991 | EP0457414A1 Object detection device in an image sequence |
| 11/21/1991 | EP0397757B1 Photoelectric barrier grid |
| 11/20/1991 | CN1014843B Touch panel apparatus |
| 11/13/1991 | EP0456131A2 Photoelectric sensor |
| 11/12/1991 | US5065178 Photosensitive material detecting apparatus |
| 11/12/1991 | US5065019 Method for determining petroleum saturation in a subsurface |
| 11/06/1991 | CN1014636B Method and deivce for detecting unwanted materials among cullet |
| 11/05/1991 | US5063288 Apparatus for securing a confined space with a laser emission |
| 10/30/1991 | EP0454014A2 Electronic installation apparatus |
| 10/22/1991 | US5060309 Infrared detector |
| 10/01/1991 | US5053616 Photoelectric array detection circuitry with dual gating means |
| 09/24/1991 | US5051821 Low light level color image television system including electronic contrast enhancement system |
| 09/24/1991 | US5051574 Optical coordinate detection apparatus |
| 09/17/1991 | US5049736 Apparatus for measurement of geological age by measuring zirconium color |
| 09/17/1991 | CA1289216C Touch panel apparatus |
| 09/10/1991 | US5047783 Millimeter-wave imaging system |
| 08/27/1991 | US5043565 Process and circuit for compensating changes |
| 08/27/1991 | CA2036999A1 Detection of contaminants in a liquid stream |
| 08/21/1991 | EP0442351A1 Infrared temperature sensor |
| 08/20/1991 | USRE33668 Detection device having energy transmitters located at vertically spaced apart points along movable doors |
| 08/14/1991 | EP0441771A2 Process for detecting the presence of damp and/or smoke in the exhaust air from a device for heating materials and apparatus for carrying out this process |