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:
Apr. 20, 2004
Filed:
Mar. 06, 2002
Applicant:
Inventor:
Thomas Howard Johnson, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D 7/900 ; B65D 8/118 ;
U.S. Cl.
CPC ...
B65D 7/900 ; B65D 8/118 ;
Abstract
A method for reducing the formation of non-volatile residue (NVR) in alkylene oxide, preferably ethylene oxide, comprising contacting the alkylene oxide with fresh electron source material effective to convert ferric ions to ferrous ions. Iron (Fe ), chromium, and a combination thereof are preferred fresh electron source materials, with iron (Fe ) being most preferred.