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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.:

US 12559867 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Apr. 30, 2020

Fibers of polymers that have a backbone including a positively charged component of a zwitterionic moiety, and their use in implantable therapeutic delivery systems

Applicant:

Cornell University, Ithaca, NY (US);

Inventors:

Minglin MA, Ithaca, NY (US);

Qingsheng Liu, Ithaca, NY (US);

XI Wang, Ithaca, NY (US);

James A. Flanders, Ithaca, NY (US);

Assignee:

CORNELL UNIVERSITY, Ithaca, NY (US);

Attorney:

Troutman Pepper Locke LLP (Rochester)

Primary Examiner:

Nicole P Babson

Assistant Examiner:

Lori K Mattison

Int. Cl.
CPC ...
D01F 6/70 (2006.01); A61L 17/00 (2006.01); A61L 17/10 (2006.01); A61L 17/14 (2006.01); A61L 27/18 (2006.01); A61L 27/52 (2006.01); A61L 27/54 (2006.01); A61L 27/56 (2006.01); D01F 6/80 (2006.01);
U.S. Cl.
CPC ...
D01F 6/70 (2013.01); A61L 17/005 (2013.01); A61L 17/10 (2013.01); A61L 17/145 (2013.01); A61L 27/18 (2013.01); A61L 27/52 (2013.01); A61L 27/54 (2013.01); A61L 27/56 (2013.01); D01F 6/80 (2013.01);
Abstract

The present application relates to fibers having a diameter of 1 nm to 10,000 nm, of one or more biocompatible polymers, wherein the polymers have a backbone which includes a positively charged component from a zwitterionic moiety. Additionally, this application discloses an implantable therapeutic delivery system and its method of formation, comprising a housing defining a chamber, wherein said housing is porous and formed from the fibers. Inside of the housing includes a preparation of cells which release a therapeutic agent from the chamber. The implantable therapeutic delivery system can be used in the treatment of diabetes.

Find Patent Forward Citations

MA, Minglin. (2026). Fibers of polymers that have a backbone including a positively charged component of a zwitterionic moiety, and their use in implantable therapeutic delivery systems (U.S. Patent No. 12559867). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12559867

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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