| Patents for G01V 8 - Prospecting or detecting by optical means (8,157) |
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| 07/01/1980 | US4210809 Method and apparatus for the non-invasive determination of the characteristics of a segmented fluid stream |
| 06/11/1980 | EP0012076A1 Device for detecting the presence of objects on a conveyor belt |
| 06/11/1980 | EP0011744A1 Light grid arrangement |
| 05/06/1980 | US4201910 Photosensor assembly |
| 02/06/1980 | EP0007720A1 An electrically operated line monitor for tennis |
| 01/29/1980 | US4186388 Proximity detector |
| 01/29/1980 | US4186309 Web monitoring and control apparatus for web handling machinery |
| 01/22/1980 | US4185192 Alignment system using two photocells directed at each other |
| 01/10/1980 | WO1980000036A1 Intrusion detector for press brake |
| 12/25/1979 | US4180726 System for measuring characteristics of an object's motion |
| 12/25/1979 | CA1068798A Detecting element for a control device for invalids |
| 12/12/1979 | EP0005854A1 Apparatus for facilitating alignment of a group of cyclically switched light transmitters or receivers with a single light receiver or transmitter |
| 12/12/1979 | EP0005853A1 Light barrier apparatus including an alignement aid |
| 12/12/1979 | EP0005852A1 Reflection light barrier apparatus capable of recognizing strongly reflecting objects |
| 11/20/1979 | US4175231 Device for detecting a moving body |
| 08/28/1979 | US4165921 Horizontally and vertically adjustable mirror mounting |
| 08/07/1979 | US4163991 Arrangement for examining objects |
| 07/31/1979 | US4163158 Sewing machine bobbin thread run-out alarm using reflected light |
| 05/29/1979 | US4156883 Light barrier arrangement |
| 04/24/1979 | US4151410 Document processing, jam detecting apparatus and process |
| 04/24/1979 | CA1053027A1 Method and device for examining pulp for the presence of shives |
| 04/17/1979 | US4150286 Material flow monitoring circuit |
| 01/02/1979 | CA1045698A1 Method for discriminating high-temperature red heated material |
| 11/28/1978 | US4127771 Optical apparatus |
| 08/15/1978 | US4107541 Workpiece hole presence and absence inspector |
| 08/15/1978 | US4107539 Laser workpiece position and presence inspector and machine control governor |
| 08/15/1978 | US4107522 Rotary beam light curtain |
| 06/27/1978 | US4097733 Door securing light barrier |
| 06/27/1978 | US4097731 Automatic gain control for photosensing devices |
| 03/14/1978 | US4079250 Programmable voltage sensing circuit |
| 02/21/1978 | US4075507 Circuit arrangement for evaluating signals, particularly output signals of optical measuring devices |
| 01/24/1978 | US4070700 Detecting element for a control device for invalids |
| 12/13/1977 | US4063085 Method of and apparatus for electronic scanning |
| 11/15/1977 | US4058737 Method and apparatus for detecting extraneous solid substances contained in liquid |
| 11/15/1977 | US4058736 Method and apparatus for inspecting extraneous solid substances contained in liquid |
| 10/11/1977 | US4053233 Retroreflectors |
| 10/04/1977 | US4052120 Optical apparatus for producing a light curtain |
| 09/27/1977 | US4051365 Photoelectric detector having an indicator for indicating the operating condition thereof |
| 08/23/1977 | US4044250 Devices for detecting the presence of an object in a monitored region |
| 07/26/1977 | US4037966 Method and device for examining pulp for the presence of shives |
| 07/05/1977 | US4034190 Method and apparatus for remote salinity sensing |
| 06/28/1977 | US4032777 Photomeric monitoring device |
| 06/07/1977 | US4027982 Needle detector for circular knitting machines |
| 03/29/1977 | US4015123 System for assuring hot face identification of refractory kiln liners |
| 03/29/1977 | US4015122 Photo-electric object detection system |
| 03/22/1977 | US4013886 Light projector and detector unit |
| 03/15/1977 | US4012635 Light barrier system |
| 03/08/1977 | US4011447 System for detecting the edges of a moving object employing a photocell and an amplifier in the saturation mode |
| 02/01/1977 | US4006481 Underground, time domain, electromagnetic reflectometry for digging apparatus |
| 01/25/1977 | US4005289 Method for identifying anomalous terrestrial heat flows |
| 09/28/1976 | US3983388 Apparatus for hardware item inspection |
| 07/20/1976 | US3970846 Presence detecting system with self-checking |
| 06/22/1976 | US3965360 Method for discriminating high-temperature red heated material |
| 06/01/1976 | US3961187 Remote sensing of marine hydrocarbon seeps |
| 03/23/1976 | US3946224 Method and device for detecting the passage of objects |
| 03/02/1976 | US3942000 Method and apparatus for positioning railway machines |
| 01/13/1976 | US3932763 Detector for tubular transparent article |