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:
Apr. 06, 2004
Filed:
May. 17, 2001
Ray Yin, Newark, DE (US);
Tu-Chen Cheng, Timonium, MD (US);
H. Dupont Durst, Bel Air, MD (US);
Dujie Qin, Bel Air, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Nanocapsules useful for encapsulating bioactive molecules such as proteins are disclosed. These nanocapsules are comprised of branched or hyperbranched polymers and copolymers and have a core-shell structure forming a pocket volume appropriate for complexing and retaining enzymes and other bioactive molecules. The nanoencapsulated bioactive molecule is stable in extreme temperatures and pH, soluble in aqueous or organic solvents, and can be lyophilized to a dry powder for long-term storage without loss of enzyme activity.