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:
Feb. 06, 2001
Filed:
Apr. 16, 1999
Applicant:
Inventors:
Herbert Conner, Landenberg, PA (US);
Tingdong Lin, Wilmington, DE (US);
Gert Tuin, Apeldoorn, NL;
Henrica G. M. van de Steeg, Bennekom, NL;
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/772 ; D21H 1/711 ; D21H 1/714 ; D21H 1/717 ;
U.S. Cl.
CPC ...
D21H 1/772 ; D21H 1/711 ; D21H 1/714 ; D21H 1/717 ;
Abstract
Aqueous paper size dispersions comprising: a) at least one paper sizing compound, and b) a water-soluble dispersant containing at least two hydrophilic groups and at least one hydrophobic group. Processes for sizing paper utilizing the aqueous paper size dispersions, and paper made by the processes.