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:
May. 09, 2000
Filed:
Mar. 30, 1998
Applicant:
Inventors:
Cornell Chappell, Jr, Petersburg, VA (US);
Junaid Ahmed Siddiqui, Richmond, VA (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428323 ; 428328 ; 428331 ; 428327 ; 428143 ; 428145 ;
Abstract
An orientated polyester film coated on at least one surface with a coating that improves its antiblocking properties is disclosed. The coating contains an organic polymer and about 0.002% to 1.5% by weight, based on the weight of the coating, of porous particles that have a pore volume of at least 0.03 mL/g and a particle size of about 0.5 .mu.m to 4.5 .mu.m.