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. 18, 2010
Filed:
Dec. 05, 2006
Ken Stephen Schermacher, Chadds Ford, PA (US);
Jeff B. Alspach, Lake Orion, MI (US);
Anthony Joseph Martino, West Chester, PA (US);
Matthew Paul Reinhardt, Richmond, VA (US);
Thomas W. Simpson, Iii, Boothwyn, PA (US);
Jason R. Juhasz, Hockessin, DE (US);
Ken Stephen Schermacher, Chadds Ford, PA (US);
Jeff B. Alspach, Lake Orion, MI (US);
Anthony Joseph Martino, West Chester, PA (US);
Matthew Paul Reinhardt, Richmond, VA (US);
Thomas W. Simpson, III, Boothwyn, PA (US);
Jason R. Juhasz, Hockessin, DE (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A system utilizing the flow cell of the present invention includes a reflectance mode spectrophotometer positioned with respect to the flow cell or a probe. Either the flow cell or the probe has a thin partition mounted in spaced relationship with respect to a transparent window. The partition has a predetermined index of refraction and has a thickness dimension that is less than that of the window. The spacing between the partition and the window is such that evanescent coupling of radiation reflected from the liquid into the material of the window is prevented. The spectrophotometer directs interrogating radiation toward a liquid flowing through the sample chamber and responds to interrogating radiation reflected from the liquid to produce an electrical signal representative of a color property thereof.