ClassID:

167947

G01N2021/551 - CPC Classification

Classification description:

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light; Systems in which incident light is modified in accordance with the properties of the material investigated; Specular reflectivity Retroreflectance

Recent Application in this class:
#1
20260079107
2026-03-19

RETRO-REFLECTOMETER FOR MEASURING RETRO-REFLECTIVITY OF OBJECTS IN AN OUTDOOR ENVIRONMENT

#2
20240125698
2024-04-18

Gadget for measuring retroreflected signal

#3
20240102928
2024-03-28

DETECTION DEVICE AND MEASUREMENT APPARATUS

#4
20240060887
2024-02-22

FILTER-PRESS FILTER-CLOTH DAMAGE DETECTION DEVICE

#5
20230125832
2023-04-27

Multipass cell

#6
20230020376
2023-01-19

Retro-reflectometer for measuring retro-reflectivity of objects in an outdoor environment

#7
20220349822
2022-11-03

TEST DEVICE AND METHOD FOR TESTING THE RETROREFLECTION AND/OR FLUORESCENCE OF AN OBJECT

#8
20220276164
2022-09-01

METHOD, SYSTEM AND MATERIAL FOR DETECTING OBJECTS OF HIGH INTEREST WITH SCANNING SYSTEMS

#9
20220011226
2022-01-13

Retroreflectometer for non-contact measurements of optical characteristics

#10
20210372923
2021-12-02

Retro-reflectometer for measuring retro-reflectivity of objects in an outdoor environment comprising a lock-in amplifier coupled to an optical modulator and an optical detector

#11
20210333260
2021-10-28

Methods and apparatuses for monitoring the curing of a photocurable material

#12
20210189471
2021-06-24

Molecular beacon-based optical gene biosensor employing retro-reflection and quantitative analysis method of nucleic acid molecule

#13
20200372269
2020-11-26

Determination procedure of the luminance of traffic signs and device for its embodiment

#14
20200166332
2020-05-28

Measuring device, system, method, and program

#15
20190339063
2019-11-07

Measuring device, system, method, and program

#16
20190170636
2019-06-06

Configurable retro-reflective sensor system for the improved characterization of the properties of a sample

#17
20190163992
2019-05-30

Retroreflectivity measurement system

#18
20180292315
2018-10-11

Growth-rate measuring apparatus and growth-rate detection method

#19
20180225531
2018-08-09

Determination procedure of the luminance of traffic signs and device for its embodiment

#20
20180064837
2018-03-08

SYSTEMS AND METHODS FOR DETERMINING THE CLEANLINESS OF A SURFACE

#21
20170337436
2017-11-23

Determination procedure of the luminance of traffic signs and device for its embodiment

#22
20170261429
2017-09-14

Apparatus for retro-reflection measurement using a holed mirror and circular aperture for annular band detection

#23
20150367855
2015-12-24

Method for detecting a roadway and corresponding detection systems

#24
20150328351
2015-11-19

Systems and methods for determining the cleanliness of a surface

#25
20150321421
2015-11-12

Method for detecting characteristic of forming material and three-dimensional printing apparatus

#26
20150292868
2015-10-15

Systems and methods for semiconductor device process determination using reflectivity measurement

#27
20150285966
2015-10-08

Minimum retroreflectivity compliance system, method and assembly

#28
20150029509
2015-01-29

Systems and methods for analyzing a multiphase fluid

#29
20140313504
2014-10-23

PROCEDURE AND DEVICE FOR THE MEASUREMENT OF DYNAMIC LUMINANCE AND RETROREFLECTION OF ROAD MARKINGS AND SIGNALS AND THE OBTENTION OF THE SHAPE, POSITION AND DIMENSIONS OF THE SAME

#30
20140233850
2014-08-21

Method for determining the luminance of traffic signs and device for implementing same

#31
20130194565
2013-08-01

Apparatus and method for measuring retroreflectivity of a surface

#32
20130128272
2013-05-23

Minimum retroreflectivity compliance system, method and assembly

#33
20120287432
2012-11-15

Apparatus for measuring the retroreflectance of materials

#34
20110069317
2011-03-24

RETROVIEWERS

#35
20100316252
2010-12-16

Method for determining the luminance of traffic signs and device for implementing same

#36
20100053626
2010-03-04

Mounting test method

#37
20090237668
2009-09-24

Detecting a target using an optical augmentation sensor

#38
20080192261
2008-08-14

Apparatus and method for examining a curved surface

#39
20070216904
2007-09-20

System for automated determination of retroreflectivity of road signs and other reflective objects

#40
20070176728
2007-08-02

Tiled periodic metal film sensors

#41
20060262312
2006-11-23

System for automated determination of retroreflectivity of road signs and other reflective objects

#42
20050122526
2005-06-09

Measurement device for optical measurement of a property of a measurement object

#43
16280954
2020-03-24

Retroreflective optical system and methods