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:
Dec. 29, 1998
Filed:
Mar. 24, 1998
Applicant:
Inventors:
Gary A Scherubel, St. Louis, MO (US);
Robert Reid, Alton, IL (US);
Allen R Fauke, St. Louis, MO (US);
Kevin Schwartz, St. Louis, MO (US);
Assignee:
Clearwater, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; C09K / ; E21B / ;
U.S. Cl.
CPC ...
507203 ; 507239 ; 507246 ; 507260 ; 507261 ; 507265 ; 507266 ; 507267 ; 507268 ; 106 1441 ; 116902 ; 116113 ; 252388 ; 25238953 ; 25238954 ; 252392 ; 252396 ;
Abstract
Corrosion is inhibited in hydrochloric acid solutions used to acidize wells, by adding to the solutions a corrosion inhibiting composition comprising cinnamaldehyde or a substituted cinnamaldehyde together with a reaction product of a C.sub.3-6 ketone such as acetophenone, thiourea or a related compound, formaldehyde and hydrochloric acid.