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:
Jul. 07, 1998
Filed:
May. 17, 1995
Applicant:
Inventors:
Maria Manuel De Castro Loureiro Barreto Rosa, Amsterdam, NL;
Arend Kuindert Van Helden, Amsterdam, NL;
Herman Mathieu Muijs, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C08G / ; C08G / ; C07G / ;
U.S. Cl.
CPC ...
507103 ; 507100 ; 528392 ; 528271 ; 568387 ; 568399 ;
Abstract
Emulsifiable oil, suitable for use as oil phase in oil-based drilling fluids, having one or more ketones with a flashpoint of at least 55.degree. C., in particular oligoketones obtainable by co-oligomerization of carbon monoxide and olefins.