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:
May. 19, 1992
Filed:
Mar. 26, 1991
Paul C Johnson, Sugarland, TX (US);
James D Colthart, Houston, TX (US);
Arthur L Otermat, Houston, TX (US);
David A Weingaertner, Houston, TX (US);
Charles C Chou, Houston, TX (US);
Dallas L Byers, Katy, TX (US);
Stephen M Stearns, Richmond, TX (US);
Arnold R Marsden, Jr, Houston, TX (US);
George M Deeley, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
An improved process for the remediation of soil contaminated by the presence therein of organic or semi-volatile inorganic contaminants which comprises (1) supplying thermal energy to the soil at one or more locations under the surface of the soil, (2) collecting the vapors resulting from contaminant vaporization or decomposition under the influence of the thermal energy, after passage horizontally through the soil, at one or more locations under the surface of the soil and separating from the collected vapors the environmentally undesirable components thereof.