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. 26, 1996
Filed:
Apr. 28, 1994
Applicant:
Inventor:
Lucien Bourson, Colombes, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162158 ; 1621643 ; 1621646 ; 1621682 ; 162175 ; 162177 ; 162179 ; 1621812 ; 1621813 ; 1621814 ; 1621815 ; 162183 ;
Abstract
Homogeneous and regular paper sheets are shaped, via conventional papermaking technique, from nonpolluting papermaking compositions comprising an aqueous suspension of cellulosic papermaking fibers that also include (a) an inorganic filler material, (b) a papersizing agent and (c) a ternary retention additive which comprises (c)(1) a cationic starch, (c)(2) a polyaluminum chloride and (c)(3) an anionic silica.