The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2005
Filed:
Mar. 13, 2002
Anthony Joseph Martino, West Chester, PA (US);
Ken Stephen Schermacher, Chadds Ford, PA (US);
Larry Eugene Steenhoek, Wilmington, DE (US);
Timothy Aaron Snyder, Voorhees, NJ (US);
Robert Averitt, Newark, DE (US);
Robert E. Bucher, Jr., Newark, DE (US);
Anthony Joseph Martino, West Chester, PA (US);
Ken Stephen Schermacher, Chadds Ford, PA (US);
Larry Eugene Steenhoek, Wilmington, DE (US);
Timothy Aaron Snyder, Voorhees, NJ (US);
Robert Averitt, Newark, DE (US);
Robert E. Bucher, Jr., Newark, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
An apparatus for inspection of fluids having a fluid analysis cell with a cavity therein enclosed by two light transmitting windows and having a spacer member fixedly positioned therebetween which provides a fluid analysis chamber of fixed pathlength where fluid flows by the windows and preferably wherein the flow laminar and at a uniform shear to provide accurate color measurements. Light transmitting and receiving probes are positioned adjacent to the viewing windows and wherein the faces of each probe are contiguous and flush with the viewing windows but are separated from the flow by the viewing windows, so that transmission measurements can be taken orthogonal to the direction of flow. The apparatus is particularly useful in the manufacture of dispersions and tints used in the manufacture of paints, so that the color of material being made can be accurately matched to a standard color in the wet state with confidence that the color will match in the dry state.