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:
Mar. 25, 2008
Filed:
Nov. 23, 2005
Applicant:
Laurence Waino Mckeen, Sewell, NJ (US);
Inventor:
Laurence Waino McKeen, Sewell, NJ (US);
Assignee:
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a tool for use in an oil pipe having a fluoropolymer coating imparting substantially reduced adhesion of asphaltenes, paraffin wax, and inorganic scale, so as to reduce plugging of said tool, and impermeability to salt water so as to protect the tool pipe from corrosion. Such a tool is particularly useful in a pipe coated in a similar manner.