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. 11, 1980
Filed:
Aug. 28, 1978
Applicant:
Inventors:
Charles H Keith, Charlotte, NC (US);
Richard O Tucker, Locust, NC (US);
Assignee:
Celanese Corporation, Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B22D / ;
U.S. Cl.
CPC ...
264 10 ; 264 14 ; 264140 ; 264200 ; 264211 ; 425-7 ; 425 10 ;
Abstract
A non-woven cellulose ester fibrous filter sheet material comprising cellulose ester staple fibers and cellulose ester fibrets which exhibits improved filtration properties and the method of its preparation.