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:
Jun. 02, 1981
Filed:
Dec. 12, 1979
Applicant:
Inventor:
Robert W Frischmuth, Huntington Beach, CA (US);
Assignee:
Occidental Research Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C10L / ; C10B / ;
U.S. Cl.
CPC ...
44 / ; 201 17 ;
Abstract
Solid carbonaceous material, especially coal or coal char, is desulfurized by sequential treatment with steam, hydrogen, and steam. The partially desulfurized char from the first steam treatment zone is used to remove hydrogen sulfide from the effluent gas from the hydrogen treatment zone. Both the treated effluent gas and the spent char are recycled, thereby providing an efficient process for desulfurization.
Frischmuth, Robert. (1981). Desulfurization of carbonaceous materials (U.S. Patent No. 4270928). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4270928
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile