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. 06, 2022
Filed:
Mar. 20, 2018
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Liren Xu, Spring, TX (US);
Rahul Sharma, Lake Jackson, TX (US);
Thomas Fitzgibbons, Lake Jackon, TX (US);
Mark K. Brayden, Baton Rouge, LA (US);
Marcos V. Martinez, Freeport, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 53/22 (2006.01); B01D 69/08 (2006.01); B01D 71/02 (2006.01); C07C 7/144 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0067 (2013.01); B01D 53/228 (2013.01); B01D 67/0055 (2013.01); B01D 69/08 (2013.01); B01D 71/021 (2013.01); C07C 7/144 (2013.01); B01D 2323/08 (2013.01);
Abstract
A method of making a hollow fiber carbon molecular sieve is comprised of heating a hollow polymer fiber to a carbonization temperature in an atmosphere that is non-oxidizing to form a hollow fiber carbon molecular sieve, wherein during at least a portion of the heating a tensile force is applied to the hollow polymer fiber. The method may improve the separation of gases similar in size such a propylene from propane.