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:
Aug. 04, 2015
Filed:
Jul. 18, 2013
Applicant:
Wisys Technology, Madison, WI (US);
Inventor:
Annamalai Karthikeyan, Oshkosh, WI (US);
Assignee:
WISYS TECHNOLOGY FOUNDATION, INC., Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 31/02 (2006.01); C01B 31/12 (2006.01);
U.S. Cl.
CPC ...
C01B 31/12 (2013.01); C01B 31/02 (2013.01);
Abstract
High-speed formation of char, useful as a precursor to activated carbon, is produced by a combination of cellulosic material and an acid solution both preheated close to the steam temperature and then mixed. The rapid endothermic reaction rapidly chars the cellulosic material driving excess water away as steam and minimizing tar formation.