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United States Department of Agriculture

Agricultural Research Service

Title: Microscopic Starch-Based Shells
See also: US Patent Office Full Record

Southern Plains Area


Patent Number: 6669962
Docket Number: 5601
Serial Number: 9745043
Date Patented: 12/30/2003

Technology Description:

The invention relates to microscopic starch-based shells, or microcapsules. The microcapsules are formed by first processing starch and either a fat or oil in the presence of water in a steam-jet cooker, and then diluting the mixture with an excess of water. Microscopic starch shells, having a fat or oil core, rise to the surface. When a volatile fat or oil is used in the process, the core will evaporate, leaving empty shells that can be refilled with another agent that would not have survived the steam-jet cooking. The microcapsules disperse easily in water and can be used for a variety of purposes including lubricants, cosmetics, oil-based food flavorings, and for delivery of oil-soluble pharmaceuticals that are given either by injection or topically. Chemical modification of the starch shells would be possible for certain pharmaceutical and industrial applications.

Reference:

Please refer to USPN 6,669,962 (Docket #0056.01), "Starch Microcapsules for Delivery of Active Agents," which issued on December 30, 2003, and is a continuation of USPN 6,238,677 (Docket #0006.98), which issued on May 29, 2001.  Foreign rights are not available. 

Inventors:

George F. Fanta
Biomaterials Processing Research
Peoria, Illinois 61604
(309) 81-6356 / Fax: (309) 681-6691
fanta@mail.ncaur.usda.gov
Frederick C. Felker
(Same address as first inventor)
(309) 681-6663 / Fax: (309) 681-6685
felkerfc@mail.ncaur.usda.gov
Clarence A. Knutson
Formerly with ARS)

Kenneth Eskins (deceased)


 

Last Modified: 2/24/2014
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