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. 16, 1989
Filed:
Jun. 09, 1987
Applicant:
Inventors:
Francesco Pittalis, Rome, IT;
Francesco Bartoli, Rome, IT;
Assignee:
Eniricerche S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; B29C / ;
U.S. Cl.
CPC ...
264 41 ; 21050023 ; 21050038 ; 264 455 ; 264184 ; 2642091 ; 2642095 ;
Abstract
A hollow fibre of polyester-amide, useful in the process of dialysis and in ultra-filtration processes in general, is formed by a polyester-amide with repetitive units (TATE).sub.n (wherein T is the terephthalic acid radical; A is the ethylenediamine radical; and E is the hexanediol radical). Such a fibre is obtained by a process which comprises the following steps, carried out sequentially: