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:
Sep. 11, 2001
Filed:
Dec. 17, 1991
Applicant:
Inventor:
Dinesh M. Bhat, Neenah, WI (US);
Assignee:
Fort James Corporation, Deerfield, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
D21F 1/00 ; D21F 1/66 ;
U.S. Cl.
CPC ...
D21F 1/00 ; D21F 1/66 ;
Abstract
A method and apparatus for recovery of surfactant from a foamable liquid aqueous solution thereof wherein foamable liquid containing surfactant is sparged with air or gas forming foam enriched in surfactant and residual liquid depleted in surfactant, foam enriched in surfactant is separated from residual liquid and resolved into foamable liquid enriched in surfactant by separation of gas or air therefrom.