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:
Nov. 28, 1995
Filed:
May. 18, 1994
Applicant:
Inventor:
Usama E Younes, West Chester, PA (US);
Assignee:
Arco Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
507133 ; 507136 ;
Abstract
Low-toxicity invert emulsion fluids for well drilling are disclosed. The fluids comprise a non-hydrocarbon, non-mineral oil continuous phase and a dispersed aqueous phase. The continuous phase materials of the invention pass the 48 hour, LC50 Mysidopsis bahia bioassay test protocol.