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. 31, 2000
Filed:
Jun. 04, 1998
Applicant:
Inventors:
Simon Neil Duncum, Bracknell, GB;
Keith James, Banstead, GB;
Christopher George Osborne, Camberley, GB;
Assignee:
BP Exploration Operating Company Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ; C10G / ;
U.S. Cl.
CPC ...
507 90 ; 208 / ; 585950 ; 44433 ; 166304 ; 528424 ;
Abstract
A method of reducing the deposition of wax from a crude oil containing wax which comprises adding thereto at least one N-substituted polyalkylene imine which has at least one organic substituent that is a hydroxy-substituted alkyl group of 12-24 carbon atoms.