Process for preparing ethylcellulose microcapsules
Patent 4486471 Issued on December 4, 1984. Estimated Expiration Date: 
May 5, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 5, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3415758 3531418 3859228 Process for encapsulation of medicaments Patent #: 3960757 InventorsAssigneeApplicationNo. 06/375046 filed on 05/05/1982US Classes:427/213.3, Solid encapsulation process utilizing an emulsion or dispersion to form a solid-walled microcapsule (includes liposome)424/495, Ethyl cellulose428/402.24Microcapsule with solid core (includes liposome)ExaminersPrimary: Lovering, Richard D.Attorney, Agent or FirmInternational ClassA61K 9/50 (20060101)Foreign Application Priority Data1981-05-29 JPAbstractPharmaceutically active compound-containing microcapsules the coating walls of which consist essentially of ethylcellulose and a water-insoluble, acid-soluble polymer material are disclosed. A method of preparing said microcapsules is also disclosed. | |
