| Patents for G01V 8 - Prospecting or detecting by optical means (8,157) | 
|---|
| 04/14/1987 | US4658244 Air-in-line detector  | 
| 04/01/1987 | EP0215795A1 Method and device for non-contact detection of plants  | 
| 03/31/1987 | US4653855 Apparatus and process for object analysis by perturbation of interference fringes  | 
| 03/24/1987 | US4652742 Arrangement for and method of determining two or more superimposed film sheets  | 
| 03/17/1987 | US4650990 Processor-controlled light screen wherein light beam carries coded signals  | 
| 03/12/1987 | DE3532197A1 Light curtain  | 
| 03/11/1987 | EP0213587A2 Broken filament detector and system therefor  | 
| 03/10/1987 | US4649270 Photo-electric object detector having removable field stop means  | 
| 03/10/1987 | US4648710 Blind guide device  | 
| 02/24/1987 | US4646071 Infrared-ray sensitive alarm device built into electronic equipment  | 
| 02/24/1987 | US4645930 Motion detector  | 
| 02/24/1987 | US4645919 Photosensitive motion detector apparatus  | 
| 02/17/1987 | US4644147 Method for deflection of optical rays and an optical arrangement therefor  | 
| 02/12/1987 | WO1987000929A1 CIRCUIT FOR EVALUATING THE SIGNALS FROM A SERIES OF n PHOTODETECTORS SCANNED IN RAPID SUCCESSION  | 
| 02/10/1987 | US4642454 Infrared intrusion detector with field of view locator  | 
| 02/04/1987 | EP0210826A2 Method of observing bore holes, and apparatus therefor  | 
| 01/27/1987 | US4639607 Device for sensing a recording medium in a line printer  | 
| 01/08/1987 | DE3524114A1 Device for detecting fluorescing substances on the surface of the earth  | 
| 01/06/1987 | US4635215 Article or seed counter  | 
| 01/06/1987 | US4634855 Photoelectric article sensor with facing reflectors  | 
| 12/30/1986 | US4633081 Photoelectric switch  | 
| 11/25/1986 | US4625113 Motion detector having sensing means which determine the shape of the field of sensitivity  | 
| 11/20/1986 | WO1986006816A1 Safety system for use in connection with working machines  | 
| 11/11/1986 | US4622459 Tonometer with optical sensing and variable attenuator  | 
| 11/05/1986 | EP0200006A2 Grimballed sphere  | 
| 10/28/1986 | US4620091 Mounting support for several phototransmitters and photoreceivers  | 
| 10/21/1986 | US4618854 Double eye type crime preventing sensor system  | 
| 10/21/1986 | US4618770 Electrical controller having a window discriminator  | 
| 10/15/1986 | EP0197583A1 Arrays of lenses  | 
| 10/14/1986 | US4617463 Segmented optical system for an alarm system  | 
| 10/08/1986 | EP0196822A2 Air-in-line detector  | 
| 10/08/1986 | EP0196579A1 Photoelectric sensor using light reflection and/or a light barrier  | 
| 10/01/1986 | EP0196188A2 Improvements in or relating to pyroelectric detectors  | 
| 09/16/1986 | US4612538 Nail detector system  | 
| 09/09/1986 | US4610707 Fiber glass strands  | 
| 08/20/1986 | EP0191591A2 Electro-optic sensor  | 
| 08/20/1986 | EP0191527A1 Infra-red radiation detector devices  | 
| 08/20/1986 | EP0191155A1 Infrared intrusion detector  | 
| 08/20/1986 | CN86100687A Optical circuit  | 
| 08/12/1986 | US4605850 Light barrier apparatus for monitoring doorways  | 
| 08/12/1986 | US4605848 Photosensor and output control therefor  | 
| 08/06/1986 | EP0189536A1 Infrared intrusion detector  | 
| 07/29/1986 | US4603329 Device and method for sensing the presence or absence of newly formed parts in conjunction with parts forming equipment  | 
| 07/16/1986 | EP0187299A1 Photosensor  | 
| 07/15/1986 | CA1207865A1 Optical system for ceiling mounted passive infrared sensor  | 
| 07/15/1986 | CA1207864A1 Method of indicating and device for performing the method  | 
| 07/02/1986 | EP0186226A1 Intrusion detection system with an anti-masking device  | 
| 06/19/1986 | WO1986003597A1 Fluid drop detection system  | 
| 06/03/1986 | US4593189 Proximity detector for a body scanner  | 
| 05/27/1986 | US4591708 High-intensity opto-electronic sensor having low power consumption  | 
| 05/27/1986 | CA1205158A1 Infrared detector for determining the presence of an intruder in a monitored area  | 
| 05/22/1986 | WO1986003002A1 Drop detection system with mirror element  | 
| 05/20/1986 | US4590410 Object sensing apparatus  | 
| 04/30/1986 | EP0179522A2 Apparatus and process for object analysis by pertubation of interference fringes  | 
| 04/29/1986 | US4585940 Optical detector  | 
| 04/09/1986 | EP0177170A2 Filter press  | 
| 04/09/1986 | EP0098290B1 Apparatus for detecting the passage of multiple superposed documents along a feed path  | 
| 04/08/1986 | US4581526 Apparatus for photoelectric detection of objects  | 
| 04/02/1986 | EP0175783A1 Device for detecting movable objects  | 
| 04/01/1986 | CA1202704A1 Down and stuck bottle inspection system  | 
| 03/26/1986 | EP0175530A2 Article or seed counter  | 
| 03/19/1986 | EP0174818A2 A signal processing system for an article counter  | 
| 03/04/1986 | US4574009 Quick-disconnect housing and nipple  | 
| 03/04/1986 | CA1201507A1 Infrared-type intrusion detector  | 
| 02/18/1986 | US4571055 Transport item detecting arrangement  | 
| 02/12/1986 | EP0170984A2 Drop detecting system  | 
| 02/11/1986 | US4570157 Infrared intrusion alarm system capable of preventing false signals  | 
| 02/05/1986 | EP0170008A2 Light pen or barrier  | 
| 02/04/1986 | US4568827 Light barrier apparatus  | 
| 01/28/1986 | US4566337 Opto-electronic position sensing  | 
| 01/16/1986 | WO1986000420A1 Method and device for non-contact detection of plants  | 
| 01/16/1986 | WO1986000347A1 Method and apparatus for detecting knit/woven fibers  | 
| 01/15/1986 | EP0168202A1 Method and apparatus for monitoring sheets  | 
| 01/15/1986 | EP0168023A1 Opto-electronic device for detecting the passage of objects  | 
| 01/14/1986 | US4564756 Proximity sensor with a light-emitting diode which simultaneously emits and detects light  | 
| 01/07/1986 | US4563577 Optical sensor and reflector to reflect a different wavelength  | 
| 12/24/1985 | US4561116 Optical remote-control device for a residence door  | 
| 12/24/1985 | US4560912 Object sensing apparatus for an automatic door  | 
| 12/24/1985 | US4560279 Optical method for remote determination of the geological nature of a homogeneous surface  | 
| 12/18/1985 | EP0165116A1 System for optical detection from a distance  | 
| 12/17/1985 | US4559452 Apparatus for detecting edge of semitransparent plane substance  | 
| 11/26/1985 | US4555633 Photoelectric dimension measuring system  | 
| 11/19/1985 | US4554459 Monitoring system for a predetermined field of view  | 
| 11/12/1985 | CA1196494A1 Borehole survey instrument  | 
| 11/05/1985 | US4551711 Infrared-type intrusion detector  | 
| 10/24/1985 | WO1985004728A1 Device for detecting movable objects  | 
| 10/09/1985 | EP0157117A1 Testing device for an intrusion-signalling apparatus  | 
| 10/08/1985 | US4546246 Light barrier with spectrally filtered reflection means  | 
| 10/02/1985 | EP0156192A1 Method for detecting position of conveyed articles  | 
| 09/10/1985 | US4540887 High contrast ratio paper sensor  | 
| 09/03/1985 | US4539474 Optical switch for an automatic door  | 
| 08/21/1985 | EP0151854A2 Opto-electronic position sensing  | 
| 08/15/1985 | WO1985003589A1 Test device for intrusion warning device  | 
| 07/24/1985 | EP0149123A2 Opto-electronic proximity sensor  | 
| 07/17/1985 | EP0148593A1 Segmented optical system for an alarm system  | 
| 07/17/1985 | EP0148368A2 Movement annunciator  | 
| 07/10/1985 | EP0147925A1 Combination infrared microwave intrusion detector  | 
| 06/26/1985 | EP0146070A2 Record carrier scanning device for line printers  | 
| 06/18/1985 | CA1189164A1 Detecting the presence or absence of a coating on a substrate  | 
| 06/04/1985 | US4521861 For sensing electromagnetic energy  |