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:
Dec. 09, 1997
Filed:
Jun. 04, 1996
Applicant:
Inventors:
William Howard Tuminello, Newark, DE (US);
Mark A McHugh, Baltimore, MD (US);
Cynthia Asli Mertdogan, Baltimore, MD (US);
Assignees:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Johns Hopkins University, Baltimore, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524419 ; 524418 ; 524546 ; 5253261 ; 5253264 ; 525345 ; 525354 ; 525388 ; 528483 ; 528487 ; 528490 ; 528503 ;
Abstract
Perfluorinated polymers are dissolved in supercritical carbon dioxide and/or sulfur hexafluoride at elevated temperatures and pressures. The solutions are useful for making foams, spun-bonded or paper-like webs, or for purification of polymers.