| Patents for G01N 21 - Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light (181,396) |
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| 07/18/1990 | EP0377729A1 Improved methods of using chemiluminescent 1,2-dioxetanes. |
| 07/18/1990 | EP0377720A1 Modulated glow-discharge lamp for atomic absorption spectrometry |
| 07/18/1990 | EP0377571A1 Imaging process and system for transillumination with photon frequency marking. |
| 07/17/1990 | US4942619 Pattern inspecting apparatus |
| 07/17/1990 | US4942618 Method and apparatus for determining the shape of wire or like article |
| 07/17/1990 | US4942305 For detecting particles in a gas stream |
| 07/17/1990 | US4942303 Computer controlled fluorometer device and method of operating same |
| 07/17/1990 | US4942297 For analyzing a sample from an aerosol environment |
| 07/17/1990 | US4942134 Method and apparatus for scientific analysis under low temperature vacuum conditions |
| 07/17/1990 | US4942017 Random access chemistry analyzer |
| 07/17/1990 | US4941778 Method and apparatus for measuring and regulating the flow rate of powder in a powder spraying device |
| 07/17/1990 | US4941753 Absorption microscopy and/or spectroscopy with scanning tunneling microscopy control |
| 07/17/1990 | US4941747 Optical sensing arrangements |
| 07/17/1990 | US4941746 Apparatus for automatically determining the densities of a graphic image |
| 07/17/1990 | US4941742 Arrangement for measuring the concentration of gaseous and vaporous components of a fluid mixture |
| 07/17/1990 | US4941482 Apparatus for measuring the density of a tobacco stream |
| 07/17/1990 | CA1271834A1 Surveillance device, in particular through use of a video camera |
| 07/17/1990 | CA1271822A1 Optical apparatus and method for examining an object |
| 07/14/1990 | WO1990008311A1 Apparatus and method for transient thermal infrared emission spectrometry |
| 07/14/1990 | CA2024807A1 Apparatus and method for transient thermal infrared emission spectrometry |
| 07/12/1990 | WO1990007723A1 Spectromicroscope with photometer |
| 07/12/1990 | WO1990007709A1 Process and device for the analysis of an oxidizing gas such as oxygen |
| 07/12/1990 | WO1990007707A1 Control means for web scanning apparatus |
| 07/12/1990 | WO1990007511A1 Enhanced chemiluminescence from 1,2-dioxetanes through energy transfer to tethered fluorescers |
| 07/12/1990 | WO1990005907A3 Inspection apparatus |
| 07/12/1990 | DE3900191A1 Measuring device for determining the oxygen partial pressure, the oxygen content and the oxygen flux in biological systems |
| 07/11/1990 | EP0377446A2 Surface analysis method and apparatus |
| 07/11/1990 | EP0377253A2 Atomizer made of a high-melting metal |
| 07/11/1990 | EP0377012A1 Process and device for spectroscopic quantitative determination of gases in gas mixtures. |
| 07/11/1990 | EP0376994A1 Device for producing a magnetic field in an atomic absorption spectrometer. |
| 07/11/1990 | CN1043786A Method and apparatus for testing concentration field of smoke by laminated scan of visual light |
| 07/10/1990 | US4941138 Method and an apparatus for measuring optical characteristics of an optical disk |
| 07/10/1990 | US4940902 Apparatus and method for continuous measurement of suspended solids in a liquid medium with wiping means |
| 07/10/1990 | US4940900 Method and apparatus for determining the flocculation threshold of a petroleum product |
| 07/10/1990 | US4940689 Display material |
| 07/10/1990 | US4940333 Method and apparatus for detecting universally and selectively concentration gradients, and for deflecting a light beam in a controlled fashion |
| 07/10/1990 | US4940332 Fluorescent analysis apparatus |
| 07/10/1990 | US4940328 For sensing a property of an environment |
| 07/10/1990 | US4940327 Method and apparatus for real time asbestos aerosol monitoring |
| 07/10/1990 | CA1271538A1 Surface defect detection and confirmation system and method |
| 07/10/1990 | CA1271342A1 Optimization apparatus and procedure |
| 07/05/1990 | DE3844312A1 Device and method and a circuit for an appliance for controlling the quality of technical films |
| 07/05/1990 | DE3843700A1 Colorimeter |
| 07/04/1990 | EP0376111A2 Test strip analysing system |
| 07/04/1990 | EP0376110A2 Test strip analysing system |
| 07/04/1990 | EP0376109A2 Test strip analysing system |
| 07/04/1990 | EP0375881A1 Light reflection defect detection apparatus and method |
| 07/04/1990 | EP0375824A1 Method and apparatus to prepare a suspension for measuring |
| 07/04/1990 | EP0375744A1 A method to measure the angle of incidence for radiation and a detector to carry out the method. |
| 07/04/1990 | CN1008662B Inspection of container finish |
| 07/04/1990 | CN1008661B Beat length measuring method and equipment for high double-refraction optical fibre |
| 07/04/1990 | CA2007191A1 Thermal wave sub-surface defect imaging and tomography apparatus |
| 07/03/1990 | US4939376 Light collection device for flame emission detectors |
| 07/03/1990 | US4939336 Method and apparatus for material processing with the aid of a laser |
| 07/03/1990 | US4939095 Compensation of absorbancies for light path lengths of the cells; urine, serums |
| 07/03/1990 | US4938927 Rotary fluid manipulator |
| 07/03/1990 | US4938897 Chlorambucil derivatives and cell-discriminating agent containing the same |
| 07/03/1990 | US4938602 Automated process monitoring |
| 07/03/1990 | US4938601 Optical web monitoring device with row cameras with directed illumination |
| 07/03/1990 | US4938600 Method and apparatus for measuring registration between layers of a semiconductor wafer |
| 07/03/1990 | US4938593 Photothermal densitometer for reading electrophoresis gels |
| 07/03/1990 | CA1271051A1 Method and system for optically testing sawn timber |
| 07/03/1990 | CA1271050A1 Immunoassay apparatus |
| 06/28/1990 | WO1990007160A1 Bias drift compensation in near infrared quantitative analysis instruments |
| 06/28/1990 | WO1990007109A1 A method of photometric in vitro determination of the content of an analyte in a sample of whole blood |
| 06/28/1990 | WO1990007108A1 Raman analysis apparatus |
| 06/28/1990 | WO1990007107A1 A method of photometric in vitro determination of the content of oxygen in a blood sample |
| 06/28/1990 | WO1990007106A1 A method of photometric in vitro determination of a blood gas parameter in a blood sample |
| 06/28/1990 | WO1990007105A1 Apparatus and method for detecting defects in an optical fiber |
| 06/27/1990 | EP0375603A1 Method and apparatus for visually detecting a colour deviation in a multicolour reproduction |
| 06/27/1990 | EP0375317A2 Portable colorimeter and method for characterization of a colored surface |
| 06/27/1990 | EP0375315A2 Capsule-inspection apparatus |
| 06/27/1990 | EP0374844A1 Method and apparatus for measuring the inside information of substance with the use of light scattering |
| 06/27/1990 | EP0374694A2 Defect detection system and method for pattern to be inspected |
| 06/27/1990 | EP0374620A2 Method and means for the determination of maleimide groups |
| 06/27/1990 | EP0374190A1 Spectrophotometric method for quantitatively determining the concentration of a dilute component in a light- or other radiation-scattering environment. |
| 06/27/1990 | EP0374174A1 Procedure for monitoring printing quality |
| 06/27/1990 | EP0374148A1 Atomic absorption spectroscopy |
| 06/26/1990 | USRE33241 Device for measuring extremely diminished intensity of light |
| 06/26/1990 | US4937764 Method of optical density measurement and apparatus therefor |
| 06/26/1990 | US4937637 Dual reading head transmission/reflection densitometer |
| 06/26/1990 | US4937461 Transmissometer having solid state light source |
| 06/26/1990 | US4937457 Picosecond multi-harmonic fourier fluorometer |
| 06/26/1990 | US4937451 Computed tomograph |
| 06/26/1990 | US4937449 Device for the inspection of coated and uncoated films |
| 06/26/1990 | US4937448 Self-normalizing single-beam laser spectrometer |
| 06/26/1990 | US4937441 Diagnosis apparatus for photo coupler and photo coupler device with diagnosis function |
| 06/26/1990 | US4937050 Apparatus for the evaluation of a test carrier for the analytical determination of components of a body fluid |
| 06/26/1990 | US4936828 Liquid drop image sensor |
| 06/26/1990 | US4936682 Instrument for independently and kinetically measuring light transpassion through a plurality of samples |
| 06/26/1990 | US4936681 For converting a physical value into an electric output signal |
| 06/26/1990 | US4936679 Optical fiber transducer driving and measuring circuit and method for using same |
| 06/26/1990 | US4936141 On-line paper sheet strength determination method and device |
| 06/21/1990 | DE3941008A1 Stretch thread monitor - scanning the cop face end sector-wise by cylinder lens |
| 06/20/1990 | EP0374034A2 A standard substance for optical calibration and method of making same |
| 06/20/1990 | EP0373863A2 Analytical test device |
| 06/20/1990 | EP0373796A2 Near infrared polyethylene inspection system and method |
| 06/20/1990 | EP0373656A2 Detection system for cathodoluminescence analysis |
| 06/20/1990 | EP0373311A2 Device for the enrichment of sample materials for spectroscopic purposes |
| 06/20/1990 | CN2058491U Testing device for fresh milk concentration |