Method of preparing microcapsules
Patent 4443497 Issued on April 17, 1984. Estimated Expiration Date: 
December 21, 2001. 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.
December 21, 2001. 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 3141792 3336155 3405070 Preparation of microcapsules Method of preparing microcapsules Patent #: 4089800 InventorsAssigneeApplicationNo. 06/333026 filed on 12/21/1981US Classes:427/213.36, Solid-walled microcapsule formed from preformed synthetic polymer424/495Ethyl celluloseExaminersPrimary: Lovering, Richard D.Attorney, Agent or FirmInternational ClassesA61K 9/16 (20060101)B01J 13/06 (20060101) B01J 13/08 (20060101) Foreign Application Priority Data1981-01-19 JPAbstractMicrocapsules are prepared by conducting the phase-separation of a coating polymer material in the presence of ethylcellulose. Ethylcellulose present in the phase separation system minimizes the coagulation of the coating polymer material.Other References
| |
