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:
Apr. 06, 1993
Filed:
Aug. 16, 1991
Applicant:
Inventors:
Raymond S Kasevich, Weston, MA (US);
Raymond E Holmes, Groton, MA (US);
Assignee:
KAI Technologies, Inc., Woburn, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166248 ; 405128 ;
Abstract
Methods and apparatus for treating containers holding mixed wastes and regions of the earth contaminated with radioactive materials or mixed waste provide for extracting one of non-radioactive or radioactive materials from the contaminated volume. The method also includes using a phase-modulated multiple antenna system for treating larger near-surface volumes and for creating steerable and variable heating patterns. The radio frequency antenna apparatus can be used for volatilizing non-radioactive materials from containers or volumes of the earth and disposing of them in a safe and controlled manner.