| Patents for G01V 8 - Prospecting or detecting by optical means (8,157) |
|---|
| 06/27/1990 | EP0374767A1 Light beam detection utilizing hologram |
| 06/26/1990 | US4937455 Position-sensitive director |
| 06/26/1990 | US4937443 Photoelectric ambient light switch with ambient light sensing means |
| 06/26/1990 | US4936649 Damage evaluation system and method using optical fibers |
| 06/13/1990 | EP0372068A1 A method of intrusion detection over a wide area |
| 06/12/1990 | US4933560 Pyroelectric infrared sensors |
| 06/12/1990 | US4933544 Touch entry apparatus for cathode ray tube with non-perpendicular detection beams |
| 06/06/1990 | EP0371317A2 Light barrier safety device |
| 05/31/1990 | DE3937688A1 Bildverstaerkergeraet Bildverstaerkergeraet |
| 05/29/1990 | CA1269746A1 Water supply control apparatus |
| 05/23/1990 | EP0369386A2 Photelecric switch |
| 05/23/1990 | EP0368995A1 An intrusion detection device |
| 05/16/1990 | EP0368361A2 Electronic apparatus including photoelectric switch |
| 05/16/1990 | CN1008008B Light barrier |
| 05/15/1990 | US4924790 Sewing machine with a cloth-edge detector |
| 05/09/1990 | CN1041979A Recognizing unwanted material in textile fibres |
| 05/08/1990 | US4924416 Apparatus for detecting relative crowding in a hall |
| 05/03/1990 | DE3836467A1 Contactless switching device |
| 05/01/1990 | US4922168 Universal door safety system |
| 05/01/1990 | US4922093 Method and a device for determining the number of people present in a determined space by processing the grey levels of points in an image |
| 05/01/1990 | CA1268526A1 Motion detector |
| 04/25/1990 | EP0364786A1 Identification of foreign matter in textile fibres |
| 04/24/1990 | US4920260 Detector system for optical mouse |
| 04/24/1990 | US4919533 Method for detecting diamonds in remote locations |
| 04/11/1990 | EP0362276A1 Device for the selective detection of objects |
| 04/10/1990 | US4916613 Remote low power indicator for battery driven apparatus |
| 04/10/1990 | EP0353259A4 Motion sensor. |
| 04/10/1990 | EP0276304A4 Method and apparatus for detecting incongruities, such as air bubbles, in fluid material. |
| 04/04/1990 | EP0360849A1 Apparatus for sensing the presence of a record member. |
| 04/03/1990 | CA1267464A1 Method and apparatus for detecting incongruities, such as air bubbles, in fluid material |
| 03/29/1990 | DE3929085A1 Print material quality monitor - uses light barriers on evaluation circuits to detect edges of material during transportation in machine |
| 03/28/1990 | EP0360780A1 Sensing edge |
| 03/27/1990 | US4912748 Infrared intrusion detector with a plurality of infrared ray detecting elements |
| 03/27/1990 | US4912316 Detecting apparatus with resinous body |
| 03/21/1990 | EP0358929A2 A photoelectric sensor |
| 03/20/1990 | US4910523 Micrometer wave imaging device |
| 03/14/1990 | EP0358099A2 Apparatus for the detection of single objects |
| 03/14/1990 | EP0357888A1 Method and device for generating lift shaft information |
| 03/13/1990 | US4908763 Spectral data processing method for detection of hydrocarbons |
| 03/08/1990 | WO1990002347A1 Improved detector system for optical mouse |
| 03/08/1990 | DE3842142C1 Method for processing image signals |
| 03/06/1990 | US4906976 Infrared detector |
| 03/06/1990 | US4906832 Light sensitive activator |
| 02/20/1990 | US4903009 Intrusion detection device |
| 02/20/1990 | US4902890 Rodent monitoring apparatus |
| 02/15/1990 | DE3926491A1 Blattpruefvorrichtung Blattpruefvorrichtung |
| 02/14/1990 | EP0354208A1 Device and method for visual identification of sample positions in plates with multiple wells, and use of the device. |
| 02/13/1990 | US4901084 Object detection and location system |
| 02/08/1990 | WO1990001173A1 Detection circuitry |
| 02/07/1990 | EP0353259A1 Motion sensor. |
| 02/06/1990 | US4899277 Bore hole scanner with position detecting device and light polarizers |
| 01/31/1990 | EP0352831A1 Television system for producing colour pictures at a low light intensity level |
| 01/29/1990 | EP0277964A4 Optical scanner including position sensors. |
| 01/25/1990 | WO1990000848A1 Imaging lidar system |
| 01/25/1990 | DE3824441A1 Method and device for the identification of mines and of the earth surface contour and for making them visible |
| 01/23/1990 | US4896048 Scattering-type particle detection device for use in high temperature process chambers |
| 01/16/1990 | US4894528 Laser beam lawn tennis net referee |
| 01/11/1990 | DE3823007A1 Optical sensor |
| 01/10/1990 | EP0349694A1 A detecting apparatus |
| 01/09/1990 | US4893120 Method of locating the position of an object |
| 01/09/1990 | US4893005 Method and apparatus for area and perimeter security with reflection counting |
| 01/02/1990 | US4891508 Precision infrared position detector apparatus for touch screen system |
| 12/19/1989 | US4888532 Object sensing apparatus |
| 12/13/1989 | EP0345361A1 Infrared detector |
| 12/06/1989 | EP0344404A1 Method and device for controlling the position of an automatic door |
| 11/30/1989 | WO1989011710A1 An intrusion detection device |
| 11/30/1989 | WO1989011707A1 A method of intrusion detection over a wide area |
| 11/21/1989 | US4882499 Fiber-optic detector for oils and solvents |
| 11/21/1989 | US4882491 Infrared detector |
| 11/08/1989 | EP0340443A2 Light signal reception circuit for photoelectric switch |
| 11/08/1989 | EP0340442A2 Photoelectric switch |
| 11/07/1989 | US4879461 Energy field sensor using summing means |
| 11/07/1989 | US4878761 Device for detecting excessively heated wheel bearings and/or wheel tires |
| 11/02/1989 | DE3812969A1 Infrared movement alarm |
| 10/25/1989 | EP0338711A2 A pyroelectric element |
| 10/24/1989 | US4876456 Method of and apparatus for detecting presence or absence of photosensitive object at a prescribed position |
| 10/24/1989 | US4876445 Intrusion detection device with extended field of view |
| 10/24/1989 | US4875761 Light curtain apparatus |
| 10/18/1989 | EP0337692A2 A pyroelectric infrared sensor and a method of manufacturing a dual pyroelectric element used therein |
| 10/17/1989 | US4875029 Suppressed transient uniform detection sensitivity pir detector |
| 10/11/1989 | EP0336235A2 Light identifying system |
| 10/03/1989 | US4871909 Optical switch device employing fluorescent substance in combination with a radioactive element as a light source |
| 09/26/1989 | US4870267 Ambient light sensitive activator |
| 09/26/1989 | CA1261025A1 Pyrodetector for the detection of a body entering into its detection area |
| 09/20/1989 | EP0333376A2 Improved infrared detector |
| 09/20/1989 | EP0332656A1 Motion detector |
| 09/20/1989 | CN1035733A Touch panel apparatus |
| 09/19/1989 | US4868402 Device for detecting the transit of a mobile member through a reference position |
| 09/19/1989 | US4868391 Infrared lens arrays |
| 09/19/1989 | US4867449 Electrically operated line monitor for tennis |
| 09/12/1989 | US4866425 Detector for sensing and/or measuring passing objects |
| 09/05/1989 | US4864127 Earth surface hydrocarbon gas cloud detection by use of landsat data |
| 09/05/1989 | US4864121 Light curtain with periodic light transmitter arrangement |
| 09/05/1989 | CA1259098A1 Hot body intrusion activated light control unit with daylight photocell deactivation override |
| 08/29/1989 | US4862257 Imaging lidar system |
| 08/24/1989 | WO1989007803A1 Apparatus for sensing the presence of a record member |
| 08/24/1989 | DE3804073A1 Device comprising a transmitter, a receiver and a circuit arrangement for signal evaluation |
| 08/23/1989 | EP0329083A2 Photoelectric switching apparatus of reflection type |
| 08/23/1989 | EP0328709A1 Light barrier |
| 08/22/1989 | US4859864 Sensor and method for detecting the presence of air bubbles in liquid |