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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 12746214 B1

PDFFull Text
Date of Patent:
Sep. 29, 2026

Filed:

Sep. 28, 2021

Color-changing antibacterial nanofiber

Applicant:

University of Manitoba, Winnipeg, CA;

Inventors:

Song Liu, Winnipeg, CA;

Sarvesh Logsetty, Winnipeg, CA;

Assignee:

University of Manitoba, Winnipeg, CA;

Attorney:

CALDERON SAFRAN & WRIGHT P.C.

Primary Examiner:

Katherine Peebles

Int. Cl.
CPC ...
A61K 9/70 (2006.01); A61F 13/00 (2024.01); A61F 13/01 (2024.01); A61K 9/00 (2006.01); A61K 47/32 (2006.01); A61K 47/34 (2017.01); A61L 15/24 (2006.01); A61L 15/26 (2006.01); A61L 15/46 (2006.01); A61P 17/02 (2006.01); A61P 31/04 (2006.01); B82Y 30/00 (2011.01); D01D 5/00 (2006.01); D01F 1/10 (2006.01); D01F 8/10 (2006.01); D01F 8/14 (2006.01);
U.S. Cl.
CPC ...
A61K 9/7007 (2013.01); A61F 13/01017 (2024.01); A61K 9/0092 (2013.01); A61K 9/703 (2013.01); A61K 47/32 (2013.01); A61K 47/34 (2013.01); A61L 15/24 (2013.01); A61L 15/26 (2013.01); A61L 15/46 (2013.01); A61P 17/02 (2018.01); A61P 31/04 (2018.01); D01D 5/0007 (2013.01); D01F 1/103 (2013.01); D01F 8/10 (2013.01); D01F 8/14 (2013.01); A61F 2013/00089 (2013.01); A61L 2300/208 (2013.01); A61L 2300/404 (2013.01); A61L 2300/604 (2013.01); A61L 2400/12 (2013.01); B82Y 30/00 (2013.01);
Abstract

A bacteria-responsive color-changing, core-shell nanofiber, comprising polyurethane (PU), a hemicyanine-based chromogenic probe localized in the core-shell nanofiber near the surface of the shell, polyvinylpyrrolidone (PVP) dopant in the shell, the hemicyanine-based chromogenic probe further comprising a labile ester linkage that is enzymatically cleavable by bacterial lipase released from clinically relevant strains of bacteria includingand methicillin-resistant(MRSA).

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Liu, Song. (2026). Color-changing antibacterial nanofiber (U.S. Patent No. 12746214). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12746214

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