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. 02, 1980
Filed:
Dec. 21, 1978
Applicant:
Inventor:
John H Knight, Aurora, CO (US);
Assignee:
The Superior Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07C / ; C01D / ; C10G / ;
U.S. Cl.
CPC ...
209587 ; 208 12 ; 250362 ; 250365 ; 250459 ; 4232 / ; 423422 ; 209577 ; 209582 ; 209588 ;
Abstract
Nahcolite-containing ore particles are separated from oil shale particles in a mixture of particles of nahcolite-bearing oil shale ore by irradiating the mixture of ore particles with electromagnetic energy in the infrared region of the spectrum and sorting the particles according to energy reflected at one or more selected wavelengths within that region to separate the nahcolite-containing ore particles from the oil shale particles.