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. 03, 1989
Filed:
Oct. 11, 1985
Applicant:
Inventor:
Stephen L Matson, Harvard, MA (US);
Assignee:
Sepracor, Inc., Marlborough, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12N / ; C12M / ;
U.S. Cl.
CPC ...
435 41 ; 435179 ; 435180 ; 435182 ; 435288 ;
Abstract
A catalyst such as an enzyme is contained in an asymmetric membrane between two immiscible liquid streams. A catalytic reaction is carried out by introducing a reactant to one stream and removing a product from the other stream. When the catalyst becomes deactivated, the membrane can be recharged with catalyst by displacing the deactivated catalyst and introducing fresh catalyst. The membrane has a skin layer that has pores sufficiently small so as to prevent leakage of the catalyst and a highly porous region that contains the catalyst. Insolubility of the catalyst in the immiscible liquid prevents loss of the catalyst for the highly porous region.