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:
Jan. 06, 2026
Filed:
Jun. 26, 2025
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Muhammad Nurunnabi Siddiquee, Dhahran, SA;
Mohammad M. Hossain, Dhahran, SA;
Mustafa Mohammed Ali Amin, Dhahran, SA;
Ajay Sharma, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
A method of forming a carbon fiber includes heat treating a heavy vacuum gas oil at a heat treatment temperature of 125 to 225° C. with a gas mixture comprising oxygen to form an oxidized HVGO. The method further includes collecting asphaltenes from the oxidized HVGO, melt spinning the asphaltenes to form a raw filament, treating the raw filament with a mineral acid to form an acid-treated filament, oxidizing the acid-treated filament by heating the acid-treated filament in air at a temperature of 125 to 175° C. to form an oxidized filament, and carbonizing the oxidized filament by heating the oxidized filament under an inert atmosphere at a temperature of 700 to 900° C. to form the carbon fiber.