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:
Oct. 30, 1984
Filed:
Mar. 08, 1983
Applicant:
Inventor:
Jones W Fong, Parsippany, NJ (US);
Assignee:
Sandoz, Inc., E. Hanover, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
264-46 ; 264-43 ; 264-47 ; 42840224 ; 427-3 ; 424 32 ;
Abstract
This invention provides for the production of microspheres in an oil-in-water emulsion process using an emulsifier, whereby solvent removal from the oil phase allows for isolation of discrete microspheres, wherein the release rate of a core material is modified by the use of an alkaline agent, e.g. sodium hydroxide, during the preparation of the microspheres.