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. 08, 1994
Filed:
Apr. 06, 1992
Applicant:
Inventor:
Alfons Karl, Gruendau, DE;
Assignee:
Degussa Aktiengesellschaft, Frankfurt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ; B01J / ;
U.S. Cl.
CPC ...
502427 ; 502417 ; 502418 ; 502437 ;
Abstract
A method of producing activated carbon from lignite, in which pit-wet lignite is heated to high temperatures. The invention further describes the heating of the lignite in the presence of additional water vapor. The invention also contemplates the addition of potassium ions to the lignite, in the form of potassium hydroxide.