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:
Mar. 24, 2026
Filed:
Feb. 12, 2021
Applicant:
Encapsys, Llc, Appleton, WI (US);
Inventor:
Linsheng Feng, Menasha, WI (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 13/16 (2006.01); A61K 8/11 (2006.01); A61K 8/87 (2006.01); A61L 15/28 (2006.01); A61L 15/46 (2006.01); A61Q 5/12 (2006.01); A61Q 19/10 (2006.01); B01J 13/20 (2006.01); C08L 67/02 (2006.01); C08L 71/00 (2006.01); C08L 79/08 (2006.01); C11D 3/00 (2006.01); C11D 3/37 (2006.01); C11D 3/50 (2006.01); C11D 17/00 (2006.01); C11D 17/04 (2006.01);
U.S. Cl.
CPC ...
B01J 13/16 (2013.01); A61K 8/11 (2013.01); A61K 8/87 (2013.01); A61Q 5/12 (2013.01); A61Q 19/10 (2013.01); B01J 13/206 (2013.01); C08L 67/02 (2013.01); C08L 71/00 (2013.01); C08L 79/08 (2013.01); C11D 3/001 (2013.01); C11D 3/3726 (2013.01); C11D 3/505 (2013.01); C11D 17/0039 (2013.01); C11D 17/047 (2013.01); A61K 2800/654 (2013.01); A61L 15/28 (2013.01); A61L 15/46 (2013.01); C08L 2205/03 (2013.01); C08L 2205/20 (2013.01); C08L 2310/00 (2013.01); C11D 2111/12 (2024.01); C11D 2111/14 (2024.01);
Abstract
Novel articles of manufacture are described based on a combination of an adjunct material and microcapsules made by an improved process. The improved microcapsules are chitosan urea and encapsulate a benefit agent. The process comprises combining an adjunct material formed of microcapsules formed by a water phase comprising hydrolyzing chitosan in an acidic medium at a pH of 6.5 or less for an extended period and combining with a polyisocyanate. The reaction product of the hydrolyzed chitosan and polyisocyanate yields a microcapsule having improved release characteristics, with enhanced degradation characteristics in OECD test method 301B.