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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.:

US 6716456 B1

PDFFull Text
Date of Patent:
Apr. 06, 2004

Filed:

Oct. 25, 2001

Method for production of microcapsules

Applicant:
Inventors:

Luigi Giovanni Mapelli, Milan, IT;

Luca Dobetti, Trieste, IT;

Assignee:

Eurand International S.p.A., , IT;

Attorney:

Thompson Hine LLP

Primary Examiner:

James M Spear

Assistant Examiner:

Simon J Oh

Int. Cl.
CPC ...
A61K 9/50 ; A61K 9/00 ; A61K 9/14 ; A61K 9/16 ;
U.S. Cl.
CPC ...
A61K 9/50 ; A61K 9/00 ; A61K 9/14 ; A61K 9/16 ;
Abstract

The invention provides a process for microencapsulating a pharmaceutical substrate comprising the steps of: a) adding insoluble or sparingly soluble particles of the substrate to be microencapsulated to a stable buffer solution having a high ionic strength; b) dissolving a membrane-forming ionic polymer in the buffer; c) forming a coacervate by adding a water-complexing compound causing phase separation of the resulting mixture; and d) allowing the deposition of the coacervate onto the substrate so as to create a coating of polymer around the substrate.

Find Patent Forward Citations

Mapelli, Luigi. (2004). Method for production of microcapsules (U.S. Patent No. 6716456). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6716456

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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