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:
Jan. 26, 1982
Filed:
Nov. 05, 1980
Applicant:
Inventor:
Robert C Brumfield, Incline Village, NV (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210646 ; 128D / ; 2103213 ; 2103214 ; 210644 ; 210645 ; 422 48 ; 435-2 ;
Abstract
The operating efficiency of a mass transfer device such as a blood dialyzer is considerably enhanced by subjecting the blood-carrying semipermeable fibers of the dialyzer to a toroidal dialysate flow produced within the fiber cartridge by one or more impeller or pump elements. The impellers may be rotary for continuous flow, or pistons with or without internal check valves may be used for intermittent or reciprocating flow. Moving adjacent impellers in opposite directions creates homogeneous zones of different impurity concentration within the dialyzer.