 |
|
 |
| |
 |
|
Class Information
Number: 356/409
Name: Optics: measuring and testing > By shade or color > Fluid color transmission examination
Description: Subject matter wherein a fluid substance, a solute in a solvent, or a miscible liquid is examined by a transmissive light test (quantitatively or qualitatively) for the purpose of noting color, different shades or tints of colors, or the concentration of a solute in a solvent.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7365849 |
Portable, scanning and analyzing apparatus |
Apr. 29, 2008 |
| 7339668 |
Spectrometer for analysis of multiple samples |
Mar. 4, 2008 |
| 7336362 |
Arsenic meter |
Feb. 26, 2008 |
| 7130050 |
Device of verifying and reading color, and a process of verifying and reading color in liquids |
Oct. 31, 2006 |
| 7064833 |
Double path microdrop optical biometric system |
Jun. 20, 2006 |
| 7030985 |
Colored transparent or translucent cosmetic composition |
Apr. 18, 2006 |
| 6998185 |
Dye-based fuel indicator system for fuel cells |
Feb. 14, 2006 |
| 6992768 |
Optical fluid analysis signal refinement |
Jan. 31, 2006 |
| 6919201 |
Biochip measuring method and measuring equipment |
Jul. 19, 2005 |
| 6888636 |
Method and apparatus for measuring the color properties of fluids |
May. 3, 2005 |
| 6879399 |
Measuring method for immunochromatographic test strip |
Apr. 12, 2005 |
| 6731379 |
Method and device for determining the concentration of heparin in a sample of fluid |
May. 4, 2004 |
| 6630989 |
Method and device for determining the concentration of heparin in a sample of fluid |
Oct. 7, 2003 |
| 6570655 |
Process and apparatus for measuring the opacity in gases |
May. 27, 2003 |
| 6466317 |
Automatic real time monitoring of true color in waste liquids |
Oct. 15, 2002 |
| 6091504 |
Method and apparatus for measuring gas concentration using a semiconductor laser |
Jul. 18, 2000 |
| 5949549 |
Colorimeter with a beamsplitting prism |
Sep. 7, 1999 |
| 5930000 |
Line-locked diode laser for gas spectroscopy |
Jul. 27, 1999 |
| 5699162 |
Process and apparatus for testing a multi-trip bottle for contamination utilizing residual liquid in bottle bottom and sprectral measurement |
Dec. 16, 1997 |
| 5636035 |
Method and apparatus for dual modulation laser spectroscopy |
Jun. 3, 1997 |
| 5559173 |
System for controlling the color of compounded polymer(s) using in-process color measurements |
Sep. 24, 1996 |
| 5506685 |
Method and apparatus for determining the absorption of electromagnetic radiation by a gas |
Apr. 9, 1996 |
| 5477326 |
Spectrophotometer arrangement with multi-detector readhead |
Dec. 19, 1995 |
| 5459404 |
Apparatus and method for detecting floating nodes |
Oct. 17, 1995 |
| 5272090 |
Sensor element for determining the amount of oxygen dissolved in a sample |
Dec. 21, 1993 |
| 5267019 |
Method and apparatus for reducing fringe interference in laser spectroscopy |
Nov. 30, 1993 |
| 5230863 |
Method of calibrating an automatic chemical analyzer |
Jul. 27, 1993 |
| 5124130 |
Optical probe |
Jun. 23, 1992 |
| 5002397 |
System of fluid inspection and/or identification |
Mar. 26, 1991 |
| 4998824 |
System of fluid inspection and/or identification |
Mar. 12, 1991 |
| 4936685 |
Method and apparatus for the measurement of color properties of paint |
Jun. 26, 1990 |
| 4934816 |
Laser absorption detection enhancing apparatus and method |
Jun. 19, 1990 |
| 4820490 |
Device and method for chemical analysis of fluids with a reagent coated light source |
Apr. 11, 1989 |
| 4797000 |
Comparative colorimeter |
Jan. 10, 1989 |
| 4692620 |
Near infrared measuring instrument with sample holder |
Sep. 8, 1987 |
| 4684258 |
Method and apparatus for enhancing laser absorption sensitivity |
Aug. 4, 1987 |
| 4682895 |
Fiber optic probe for quantification of colorimetric reactions |
Jul. 28, 1987 |
| 4580901 |
Fluid sample cell |
Apr. 8, 1986 |
| 4579456 |
Process and device for the quantity determination of small amounts of gaseous components in a gas mixture |
Apr. 1, 1986 |
| 4558953 |
Colorimetric method and apparatus |
Dec. 17, 1985 |
| 4549809 |
Method for photometric measurement of light absorption of liquid samples in cuvettes |
Oct. 29, 1985 |
| 4534651 |
Photometric biochemical analyzer |
Aug. 13, 1985 |
| 4509212 |
Multiple-user optical analyzer system using optical network for data transmission and control |
Apr. 2, 1985 |
| 4500207 |
Non-dispersive optical determination of gas concentration |
Feb. 19, 1985 |
| 4447150 |
Apparatus and method for measuring blood oxygen saturation |
May. 8, 1984 |
| 4392746 |
Portable photometer |
Jul. 12, 1983 |
| 4329061 |
Turntable device for analyzing chemical substances |
May. 11, 1982 |
| RE30845 |
Apparatus for automatically measuring the light transmission factor or liquid test samples |
Jan. 12, 1982 |
| 4279512 |
Method of measurement |
Jul. 21, 1981 |
| 4240751 |
Method and apparatus for specific binding substances |
Dec. 23, 1980 |
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|
