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. 03, 2026
Filed:
Nov. 29, 2022
Goodwin Plc, Staffordshire, GB;
Michael Gerard Palin, Staffordshire, GB;
Matthew Stanley Goodwin, Staffordshire, GB;
Philip Longfield, Staffordshire, GB;
GOODWIN PLC, Staffordshire, GB;
Abstract
Disclosed is a method of treating a polyimide, comprising: providing a polyimide to be treated; and contacting the polyimide to be treated with a fluid to obtain a treated polyimide; wherein the polyimide comprises a first repeat unit derived from pyromellitic dianhydride (PMDA) and a second repeat unit derived from 4,4'-oxodianiline (4,4′-ODA); and wherein the fluid comprises a supercritical fluid, a liquid with a surface tension of 10.0 mN m″1 or less under the conditions of the contacting step, or a mixture thereof. Also disclosed are polyimides obtainable by the methods of the invention, formed polyimide products comprising the polyimides of the invention, and articles comprising the formed polyimide products of the invention.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile