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:
Nov. 17, 1992
Filed:
Nov. 01, 1991
Applicant:
Inventor:
Maureen B Nunn, Naperville, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210754 ; 210764 ; 210928 ; 252176 ; 252180 ; 422 37 ; 424408 ; 424419 ; 424456 ; 4284022 ; 42840224 ; 514963 ; 162 29 ;
Abstract
Biocide treatment of the water system of a papermaking process comprising the steps of encapsulating the biocide as the core of the capsule in a water suspension, in which the shell is degradable at high water dilution, and introducing the microcapsules into the water stream to undergo dilution release.