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. 26, 2009
Filed:
Feb. 26, 2004
Richard Gustafson, Bellevue, WA (US);
James B. Callis, Seattle, WA (US);
Jeffrey D. Mathews, Neenah, WI (US);
John Robinson, Issaquah, WA (US);
Carsten A. Bruckner, San Mateo, CA (US);
Kuntinee Suvamakich, Seattle, WA (US);
Richard Gustafson, Bellevue, WA (US);
James B. Callis, Seattle, WA (US);
Jeffrey D. Mathews, Neenah, WI (US);
John Robinson, Issaquah, WA (US);
Carsten A. Bruckner, San Mateo, CA (US);
Kuntinee Suvamakich, Seattle, WA (US);
University of Washington, Seattle, WA (US);
Abstract
Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell where they are subjected to a light source adapted to stimulate fluorescence from the stained pulp fiber. Before the fiber slurry enters the flow cell it is mixed with a dilution water of bleach to reduce background fluorescence. The fluorescent light is collimated and directed through a dichroic filter onto a fluorescence splitting dichroic filter.