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. 15, 1990
Filed:
Mar. 06, 1989
Applicant:
Inventor:
Charles L Thierheimer, Jr, Corvallis, OR (US);
Assignee:
Petrolite Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
134 40 ; 106311 ; 252170 ; 252-8552 ; 252364 ;
Abstract
Paraffin deposits on oilfield equipment, pipelines, tanks and the like are removed on contact with a solvent composition comprising a substantially pure aromatic hydrocarbon and an aliphatic and/or alicyclic hydrocarbon. The solvent composition may contain a surfactant.