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:
Jul. 31, 1979
Filed:
Mar. 29, 1978
Applicant:
Inventor:
Roland O Dhondt, Long Beach, CA (US);
Assignee:
Union Oil Company of California, Brea, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10B / ; C10B / ; C10B / ;
U.S. Cl.
CPC ...
208 / ; 201 28 ; 201 29 ; 201 32 ; 201 36 ; 201 40 ; 201 42 ; 201 43 ; 202 99 ; 202221 ; 202262 ; 414301 ;
Abstract
Crushed oil shale is segregated into a major portion of relatively large particles and a minor portion of 'fines' which will pass through screen openings up to about 1/4 inch in size. The large particles are subjected to retorting as an upflowing moving bed in countercurrent contact with downflowing hot eduction gas, while the fines are retorted by controlled distribution over the hot upper surface of the bed of retorted large particles.