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:
Nov. 02, 1982
Filed:
Jul. 08, 1981
Chester G Buffington, Stratford, CT (US);
Herbert H Fang, Yorktown Heights, NY (US);
Barry A Friedfeld, Shelton, CT (US);
Thaddeus J Kaniecki, Pompton Plains, NJ (US);
John W Kennedy, Westport, CT (US);
Chong-tan Liu, West Nyack, NY (US);
Morton Sternberg, Old Greenwich, CT (US);
Henry H Feng, Orange, CT (US);
Paul Y Chen, Huntington Beach, CA (US);
Waheed Mukaddam, Quincy, MA (US);
Pattamadai E Narasimhan, Bombay, IN;
Stauffer Chemical Company, Westport, CT (US);
Abstract
An environmentally acceptable method for cleaning the interior of vessels comprises contacting the interior of a vessel with a solvent for the contaminant contained therein to produce a contaminated solvent, collecting the contaminated solvent from the vessel, separating essentially all of the contaminant from the contaminated solvent to recover essentially all of the solvent essentially free of the contaminant and produce a contaminant composition which is incineratable or can be made incineratable by blending with a combustible composition, such as fuel oil. The contaminant may be separated from the contaminated solvent by distillation; in which case the overhead product may be washed with sulfuric acid and then neutralized with a base.