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:
Dec. 04, 2007
Filed:
Nov. 08, 2002
Tai-shung Chung, Singapore, SG;
Rong Wang, Singapore, SG;
Ji Zhong Ren, Singapore, SG;
Chun Cao, Singapore, SG;
YE Liu, Singapore, SG;
Dong-fei LI, Singapore, SG;
Tai-Shung Chung, Singapore, SG;
Rong Wang, Singapore, SG;
Ji Zhong Ren, Singapore, SG;
Chun Cao, Singapore, SG;
Ye Liu, Singapore, SG;
Dong-Fei Li, Singapore, SG;
British Gas Asia Pacific Pte Limited, Singapore, SG;
Abstract
A process for the manufacture of a polyimide hollow fibre comprising: (i) providing a dope solution comprising one or more polyimides dissolved in a solvent comprising 60-100 wt % N-methylpyrollidone and 0-40 wt % ethanol, (ii) providing a bore fluid, (iii) generating a tube of the dope solution filled with the bore fluid, (iv) bringing the product of step (iii) into contact with a coagulation solvent to form a hollow fiber.