Patents-Review.com
ClassID:

167880 ⎘

G01N21/431 - 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; Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle Dip refractometers, e.g. using optical fibres

Sub-classes:
Recent Application in this class:
#1
20230313679
2023-10-05

Immersed lens downhole refractometer

 #2
20230175970
2023-06-08

FIBER OPTIC MEASUREMENT DEVICE

 #3
20220291124
2022-09-15

NONINVASIVE VACCINE TESTER

 #4
20210048388
2021-02-18

PORTABLE REFRACTOMETER

 #5
20200408680
2020-12-31

OPTICAL IMMERSION REFRACTOMETER PROBE

 #6
20200291777
2020-09-17

Immersed lens downhole refractometer

 #7
20200249157
2020-08-06

System and Method for Secondary Amplification of Refractive Detection Signals

 #8
20190391074
2019-12-26

Light arrangement for an optical device for measurement of an index of refraction, and a refractometer

 #9
20190331596
2019-10-31

Optical methods for phase change materials

 #10
20190293516
2019-09-26

Optical sensor and analyzer using the same

 #11
20190120758
2019-04-25

Micro-lens imaging multi-well test plate

 #12
20190079007
2019-03-14

Apparatus and methods for measuring the refractive index of a fluid

 #13
20190003872
2019-01-03

Optical System, and Method for Identifying Fluid Through Said System

 #14
20180231462
2018-08-16

Method for detecting a local change in refractive index of a dielectric medium located on the surface of an optical sensor

 #15
20180052034
2018-02-22

Method and device for monitoring an oil level in a machine

 #16
20170067222
2017-03-09

Method of monitoring subsurface concrete structures

 #17
20160356705
2016-12-08

Device generating evanescent waves, and method for the implementation thereof

 #18
20160084754
2016-03-24

Device for detecting the concentration of a solution

 #19
20150330896
2015-11-19

Method and measuring device for continuously measuring the abbe number

 #20
20150042985
2015-02-12

Optical sensor apparatus to detect light based on the refractive index of a sample

 #21
20140071454
2014-03-13

Apparatus and method for measuring degree of cure of adhesive agent

 #22
20130214138
2013-08-22

Optical sensor apparatus to detect light based on the refractive index of a sample

 #23
20120327401
2012-12-27

APPARATUS AND METHOD FOR MEASURING DEGREE OF CURE OF ADHESIVE AGENT

 #24
20120162654
2012-06-28

Water-in-fuel sensor

 #25
20120081699
2012-04-05

Downhole gas breakout sensor

 #26
20120069328
2012-03-22

Refractive index tool and method

 #27
20110267603
2011-11-03

Fluid Monitoring Apparatus and Methods

 #28
20110168876
2011-07-14

OPTICAL MODULE AND SYSTEM FOR LIQUID SAMPLE

 #29
20110042557
2011-02-24

Optical fiber based sensor system suitable for monitoring remote aqueous infiltration

 #30
20100296080
2010-11-25

Optical fiber sensor

 #31
20100208243
2010-08-19

Optical sensing system for liquid fuels

 #32
20100188662
2010-07-29

Surface tension measuring device and method

 #33
20100079759
2010-04-01

Watertight connection system for combined electrical and fiber optic cables

 #34
20090279074
2009-11-12

Optically amplified critical wavelength refractometer

 #35
20090116001
2009-05-07

Equipment and method for monitoring an immersion lithography device

 #36
20090046277
2009-02-19

Refractometer

 #37
20090015841
2009-01-15

Refractive index sensor utilizing gold island surface plasmon resonance on optical fiber

 #38
20080307860
2008-12-18

Detector for Distinguishing Phases in a Multiphase Fluid Mixture

 #39
20080204714
2008-08-28

On-vehicle fuel property detection device

 #40
20080129985
2008-06-05

Slanted Bragg Grating Refractometer, Using the Optical Power Diffracted to the Radiation-Mode Continuum

 #41
20080013879
2008-01-17

Optical fiber based sensor system suitable for monitoring remote aqueous infiltration

 #42
20070268479
2007-11-22

Refractive index sensor utilizing gold island surface plasmon resonance on optical fiber

 #43
20070077000
2007-04-05

Optical fiber sensor and measuring apparatus using same

 #44
20060077379
2006-04-13

Corrosion detecting device

 #45
20060066859
2006-03-30

Refractive index sensor utilizing gold island surface plasmon resonance on optical fiber

 #46
14207757
2015-07-07

System and method for dynamic aeroelastic control