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Browse by Category: Main > Optical & Optics
Class Information
Number: 356/414
Name: Optics: measuring and testing > By shade or color > Fluid color transmission examination > With color transmitting filter
Description: Subject matter including a filter element in the visible range positioned in the light transmission path of visual and photosensitive testing apparatus.










Sub-classes under this class:

Class Number Class Name Patents
356/415 Including liquid filter comparison 5


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8709356 Systems and methods for minimization or elimination of diffusion effects in a microfluidic system Apr. 29, 2014
8603772 Particle sensor with wide linear range Dec. 10, 2013
8062900 Optically readable microplate Nov. 22, 2011
8064061 Sample analyzer and sample analyzing method Nov. 22, 2011
7817277 Fiber optic probe and related apparatus, systems and methods for making optics-based measurements of liquid samples Oct. 19, 2010
7733488 Compact multi-wavelength optical reader and method of acquiring optical data on clustered assay samples using differing-wavelength light sources Jun. 8, 2010
7561271 Source adjusted colorimeter Jul. 14, 2009
7468796 Multiple-color monochromatic light absorption and quantification of light absorption in a stained sample Dec. 23, 2008
7423751 Systems and methods for use in detecting harmful aerosol particles Sep. 9, 2008
7414724 Light diffuser used in a testing apparatus Aug. 19, 2008
7321428 Process photometer Jan. 22, 2008
7277175 Systems and methods for wavelength selective measurement of properties of small volume liquid samples Oct. 2, 2007
7251032 Optical monitoring system with molecular filters Jul. 31, 2007
6785400 Spray data acquisition system Aug. 31, 2004
6561010 Apparatus and method for fluid analysis May. 13, 2003
6372184 Shipboard automatic liquid (chemical) agent detector Apr. 16, 2002
6313917 Produce data collector and produce recognition system Nov. 6, 2001
5949549 Colorimeter with a beamsplitting prism Sep. 7, 1999
5825478 Multifunctional photometer apparatus Oct. 20, 1998
5822071 Spectrometer normalization system Oct. 13, 1998
5818575 Lamp stablity diagnostic system Oct. 6, 1998
5754298 Method and apparatus for imaging semiconductor device properties May. 19, 1998
5745243 Photometer apparatus Apr. 28, 1998
5739916 Apparatus and method for determining the concentration of species in a substance Apr. 14, 1998
5694206 Spectrophotometric system using a pH/ISE meter for calibration Dec. 2, 1997
5680220 Device and method for optically measuring the characteristics of a substance utilizing three wavelengths of light Oct. 21, 1997
5670113 Automated analysis equipment and assay method for detecting cell surface protein and/or cytoplasmic receptor function using same Sep. 23, 1997
5561527 Optical sensing apparatus for CO.sub.2 jet spray devices Oct. 1, 1996
5559173 System for controlling the color of compounded polymer(s) using in-process color measurements Sep. 24, 1996
5432096 Simultaneous multiple, single wavelength electromagnetic wave energy absorbtion detection and quantifying spectrophotometric system, and method of use Jul. 11, 1995
5386287 Device for automatically evaluating a plurality of probe ingredients by means of chemical sensors Jan. 31, 1995
5337139 Multichannel optical measuring system Aug. 9, 1994
5305093 Spectrometer for conducting turbidimetric and colormetric measurements Apr. 19, 1994
5151755 Method for detecting defects in measurement means of biochemical analysis apparatuses Sep. 29, 1992
5128797 Non-mechanical optical path switching and its application to dual beam spectroscopy including gas filter correlation radiometry Jul. 7, 1992
5125747 Optical analytical instrument and method having improved calibration Jun. 30, 1992
5125748 Optical detection module for use in an automated laboratory work station Jun. 30, 1992
5092677 Photometer having a long lamp life, reduced warm-up period and resonant frequency mixing Mar. 3, 1992
5083868 Colorimeter Jan. 28, 1992
5083036 Indicator circuit for a concentration measuring apparatus Jan. 21, 1992
5062713 Method for determining the residence time distribution of a polymer extruder Nov. 5, 1991
5013155 Portable spectrophotometric instrument having vial holder and light integrator May. 7, 1991
4944589 Method of reducing the susceptibility to interference of a measuring instrument Jul. 31, 1990
4936682 Instrument for independently and kinetically measuring light transpassion through a plurality of samples Jun. 26, 1990
4911549 Heparin monitoring system and methodology Mar. 27, 1990
4896963 Automatic analyzer Jan. 30, 1990
4892409 Photometric apparatus for multiwell plates having a positionable lens assembly Jan. 9, 1990
RE33064 Method for the determination of species in solution with an optical wave-guide Sep. 19, 1989
4801187 Liquid light tube end cap assembly Jan. 31, 1989
4799794 Interior reflective chamber embodying an ordering principal for color reflectors therein Jan. 24, 1989

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