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:
Oct. 26, 1993
Filed:
Oct. 01, 1991
Applicant:
Inventor:
Harold J Rafson, Highland Park, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
134 251 ; 134 10 ; 134 19 ; 134 26 ; 134 30 ; 134 31 ; 405128 ;
Abstract
Volatile organic compounds and other volatile contaminants are removed from soils and granular solids by contacting the soil with steam at superatmospheric pressure and thereafter rapidly reducing the pressure by flashing off steam and vaporized contaminants leaving a cleaned soil product. The steam fraction containing the contaminant compounds is condensed and the contaminants can then be separated from the water for recovery or disposal.