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:
Jun. 18, 1996
Filed:
Mar. 23, 1994
Applicant:
Inventors:
Joseph M Rokowski, Riegelsville, PA (US);
Kenneth M Donnelly, Bensalem, PA (US);
Robert R Kuhn, Lansdale, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428452 ; 4285371 ; 428541 ; 428907 ; 427397 ; 427440 ;
Abstract
A method of improving tannin stain blocking in a tannin-containing substrate is disclosed which involves applying to the substrate a blend of: