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:
Jun. 04, 1991
Filed:
Aug. 13, 1990
Applicant:
Inventor:
Ying-Hsiao Li, Plano, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17D / ;
U.S. Cl.
CPC ...
137 13 ; 252 10 ;
Abstract
A method of reducing friction or drag on a gas, e.g. natural gas, flowing in a pipeline wherein a drag reducer is injected into said pipeline to form a thin film on the internal surface or wall of the pipeline. The drag reducer in the present invention is selected from a class of chemical compounds which are comprised of a molecular structure having a polar group at one end thereof which bonds onto said inner wall of the pipeline and a non-polar group at the other which smoothes the gas-solid interface between said wall and said flowing gas thereby reducing gas turbulence at said interface.