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:
Feb. 28, 2023
Filed:
Apr. 28, 2017
Roman Bielski, Coopersburg, PA (US);
Zbigniew Janusz Witczak, Mountain Top, PA (US);
Roman Bielski, Coopersburg, PA (US);
Zbigniew Janusz Witczak, Mountain Top, PA (US);
Other;
Abstract
The present invention relates a microcapsule that comprises an active pharmaceutical ingredient and a polymeric shell comprised of polymeric materials such as polyether, polyester, polyamine, polyamide, polyurea, polyurethane, polythiocarbamate, and polythiocarbonate. The outer surface of shell comprises surface functional groups such as hydroxide, primary amine, carboxylic acid, or protected forms thereof. These surface functional groups may be reacted further with reactants to place specific organic groups on the surface of the microcapsule. Such microcapsules are prepared by a modified interfacial condensation polymerization.