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:
Feb. 26, 1991
Filed:
Apr. 25, 1988
John J Joung, Naperville, IL (US);
Cavit Akin, Naperville, IL (US);
Garfield P Royer, Warrenville, IL (US);
Amoco Corporation, Chicago, IL (US);
Abstract
An immobilized biocatalyst suitable for fermenting to produce ethanol is prepared by mixing a biocatalyst such as a microorganism with a reaction product of a homogeneous dispersion of an anionic polysaccharide such as alginate and a cationic polymer such as polyethyleneimine, and combining the resultant dispersion with an oil phase to form beads. A surtactant may be present when combining the dispersion with the oil phase. A water soluble-oil insoluble curing powder includinga salt of a multivalent cation such as calcium chloride is mixed with the beads in the oil phase to gell and dehydrate the beads and to prevent the beads from adhering to one another until individual bead surfaces become hardened.