Patents-Review.com
ClassID:

167872 ⎘

G01N2021/4153 - 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; Refractometers, e.g. differential Measuring the deflection of light in refractometers

Recent Application in this class:
#1
20260086030
2026-03-26

METHOD AND DEVICE FOR DETERMINING THE REFRACTIVE INDEX OF A WEDGE-SHAPED TEST OBJECT

 #2
20250321186
2025-10-16

DEVICE AND METHOD FOR MEASURING REFRACTION COEFFICIENT AND EXTINCTION COEFFICIENT OF EUV MASK MATERIAL

 #3
20250271358
2025-08-28

SYSTEM AND PHOTONIC CRYSTAL FIBER-BASED SURFACE PLASMON RESONANCE SENSOR TO DETECT REFRACTIVE INDEX OF ANALYTE

 #4
20240426750
2024-12-26

TOMOGRAPHIC REFRACTIVE INDEX PROFILE EVALUATION OF NON-SYMMETRICAL GLASS FIBER PREFORMS AND FIBERS THEMSELVES

 #5
20230349692
2023-11-02

Type of device(s) for automatically monitoring a coating and/or structure applied to a substrate with determination of reflective properties and/or geometric dimensions, and a corresponding method

 #6
20230107854
2023-04-06

Method for determining the refractive-index profile of a cylindrical optical object

 #7
20230079736
2023-03-16

WEARING DETECTION TECHNIQUES FOR WEARABLE DEVICES

 #8
20220307980
2022-09-29

METHOD AND DEVICE FOR CHARACTERIZING A MEDIUM USING REFRACTIVE INDEX

 #9
20220276106
2022-09-01

Enhanced hybrid systems and methods for characterizing stress in chemically strengthened transparent substrates

 #10
20220074854
2022-03-10

System for reconstructing and outputting a structure of an estimation sample using refractive index distribution of updated estimation sample

 #11
20220026358
2022-01-27

Observation apparatus, optical deflection unit, and image formation method

 #12
20210262994
2021-08-26

Deflection-type refractometer with extended measurement range

 #13
20210215603
2021-07-15

PLANAR WAVEGUIDE DEVICE WITH NANO-SIZED FILTER

 #14
20200355606
2020-11-12

Optical refraction barometer

 #15
20200240913
2020-07-30

Method and apparatus for comparing optical properties of two liquids

 #16
20200240912
2020-07-30

Planar waveguide device with nano-sized filter

 #17
20190121200
2019-04-25

FABRICATION METHOD OF DEFLECTING FILM

 #18
20190094139
2019-03-28

Refractive index measuring device and refractive index measuring method

 #19
20190094138
2019-03-28

Attachment for liquid sample measurement, refractive index measuring device and refractive index measuring method

 #20
20190056320
2019-02-21

Optical sensor for phase determination

 #21
20180313737
2018-11-01

Determination of a refractive index of a sample and of a particle size of particles in said samples by means of a dynamic light scattering apparatus

 #22
20140319356
2014-10-30

Method and apparatus for determining a substance using THz radiation

 #23
20140192350
2014-07-10

Flow cells for differential refractive index detection

 #24
20140132951
2014-05-15

Device for measuring urea concentration

 #25
20120200840
2012-08-09

Continuous index of refraction compensation method for measurements in a medium

 #26
20120105850
2012-05-03

Cassette-based method and apparatus for measuring the presence and concentration of pharmaceutical substances in a medical fluid

 #27
20110188030
2011-08-04

MICROELECTRONIC SENSOR DEVICE FOR OPTICAL EXAMINATIONS IN A SAMPLE MEDIUM

 #28
20110084842
2011-04-14

Optical fluid tester

 #29
20100141928
2010-06-10

Continuous index of refraction compensation method for measurements in a medium

 #30
20090009764
2009-01-08

Method and apparatus for measuring the presence and concentration of pharmaceutical substances in a medical fluid administered by a medication delivery system

 #31
20070264545
2007-11-15

Refractive fuel concentration detector