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. 26, 1991
Filed:
Nov. 29, 1988
Dennis R Morrison, Kemah, TX (US);
Abstract
A spiral vane bioreactor of a perfusion type in which a vertical chamber (10), intended for use in a microgravity condition, has a central rotating filter assembly (30) and has flexible membranes (56) disposed to rotate annularly about the filter assembly. The flexible members have end portions disposed angularly with respect to one another. A fluid replenishment medium is input (68) from a closed loop liquid system to a completely liquid filled chamber containing microcarrier beads, cells and a fluid medium. Output (36) of spent medium is to the closed loop. In the closed loop, the output and input parameters are sensed by sensors (82,96); a manifold 86 permits recharging of the nutrients and pH adjustment; oxygen is supplied and carbon dioxide removed, bubbles are removed and the system is monitored and controlled by a microprocessor (100).