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.

Date of Patent:
Feb. 24, 2026

Filed:

Aug. 12, 2021
Applicant:

3dbiofibr Inc., Halifax, CA;

Inventors:

John Paul Frampton, IV, Halifax, CA;

Gurkaran Chowdhry, Halifax, CA;

Samuel James Baldwin, Halifax, CA;

Laurent Kreplak, Halifax, CA;

Neha Nauman, Halifax, CA;

Assignee:

3DBIOFIBR INC., Halifax, CA;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L 71/02 (2006.01); C08L 89/00 (2006.01); D01D 5/12 (2006.01); D01F 4/00 (2006.01); D01F 6/66 (2006.01);
U.S. Cl.
CPC ...
D01D 5/12 (2013.01); C08L 71/02 (2013.01); C08L 89/00 (2013.01); D01F 4/00 (2013.01); D01F 6/66 (2013.01); D10B 2211/06 (2013.01); D10B 2331/06 (2013.01);
Abstract

A process for producing a polymer strand involves: inserting a nucleation element into a pre-strand composition, the pre-strand composition comprising a polymer mixed with a solvent, the polymer having a concentration in the pre-strand composition that is greater than or equal to an overlap concentration (c*) of the polymer in the pre-strand composition; and, withdrawing the nucleation element from the pre-strand composition so that a strand comprising the polymer is pulled by the nucleation element from the pre-strand composition, the nucleation element being withdrawn at a rate such that a pull time (τ) of the nucleation element is less than reptation time (τ) required to relax polymer entanglements in the pre-strand composition, thereby inducing a viscoelastic response in the pre-strand composition as the strand is pulled by the nucleation element from the pre-strand composition.


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