ClassID:

167870

G01N2021/414 - 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 Correcting temperature effect in refractometers

Recent Application in this class:
#1
20260049929
2026-02-19

SYSTEM AND METHOD FOR PHASE CHANGE MATERIAL ANALYSIS

#2
20250198920
2025-06-19

THERMO-OPTIC COEFFICIENT MEASUREMENT SYSTEMS

#3
20230296509
2023-09-21

REFRACTOMETER, OPTICALLY TRANSMISSIVE STRUCTURE, AND METHOD OF MAKING AN OPTICALLY TRANSMISSIVE STRUCTURE

#4
20230003644
2023-01-05

PHOTONIC CHIP FOR MONITORING ACTIVITIES OF LIVING CELLS

#5
20220107269
2022-04-07

REFRACTOMETER WITH SINGLE USE PRISM AND REUSABLE OPTICAL SYSTEM

#6
20220034804
2022-02-03

REFRACTOMETER

#7
20210190602
2021-06-24

Accurate temperature reading of fluid near interface

#8
20200355607
2020-11-12

Method for evaluating and controlling temperature influence on a homogeneity test for infrared optical materials

#9
20180299368
2018-10-18

Index of refraction sensor system with dual mode temperature control

#10
20180172582
2018-06-21

Method and arrangement for determining concentration of at least two sample components in solution of at least three components

#11
20170248560
2017-08-31

Refractive index-based detection for liquid chromatography using a microring resonator array

#12
20170108427
2017-04-20

Disposable liquid chemical sensor system

#13
20160320252
2016-11-03

Temperature calibration for a measuring apparatus

#14
20130070230
2013-03-21

Apparatus and method for estimating bilirubin concentration using refractometry

#15
20110246091
2011-10-06

Universal refractometer apparatus and method

#16
20100208243
2010-08-19

Optical sensing system for liquid fuels

#17
20100085560
2010-04-08

Coffee refractometer method and apparatus

#18
20090103076
2009-04-23

Transmitted light refractometer

#19
20060044550
2006-03-02

System and method for controlling ink concentration using a refractometer

#20
17229897
2022-05-17

Thermo-optic refractometry

#21
14676483
2016-09-20

Methods and apparatus for the measurement of malt beverages