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:
Mar. 03, 1998
Filed:
Sep. 27, 1996
Applicant:
Inventors:
John Tsai, Belle Mead, NJ (US);
Walter Maliczyszyn, Somerville, NJ (US);
Teresa Capitani, Clark, NJ (US);
Christopher Kulp, Palmer, PA (US);
Assignee:
National Starch and Chemical Investment Holding Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162175 ; 1621813 ; 1621816 ; 1621818 ; 162183 ;
Abstract
The method of making paper wherein the use of a selected ether or ester modified, cationic starch as an additive in the papermaking wet end provides significantly improves retention and drainage properties particularly in alkaline microparticle containing systems.