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:
Dec. 23, 2025
Filed:
Feb. 02, 2022
Ecolab Usa Inc., St. Paul, MN (US);
William Von Drasek, Oak Forest, IL (US);
Prasad Y. Duggirala, Naperville, IL (US);
Dorota Smoron, Bartlett, IL (US);
Christopher Powers, Foley, AL (US);
David Sirois, Sherwood, WI (US);
Khaled Zouaoui, Naperville, IL (US);
Michael Kjerulf, Winnipeg, CA;
Ecolab USA Inc., St. Paul, MN (US);
Abstract
A method of treating brown stock in a brown stock washing process is provided. The method includes measuring a refractive index of a brown stock; and dosing an additive to the brown stock according to at least the refractive index of the brown stock. A system for controlling dosing of an additive to a brown stock washing process is also provided. The system includes a refractive index measurement device; a controller configured to receive data provided by the refractive index measurement device and transform the data into additive addition output instructions; and an additive delivery unit configured to receive and execute the additive addition output instructions from the controller.