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. 18, 1986
Filed:
Jul. 18, 1985
Applicant:
Inventors:
Debra L Kendall, Hornick, IA (US);
James R Butler, Big Spring, TX (US);
Kevin P Menard, Big Spring, TX (US);
Assignee:
Cosden Technology, Inc., Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203-9 ; 203 49 ; 203 68 ; 203 91 ; 585-5 ;
Abstract
A process for the distillation of readily polymerizable vinyl aromatic compounds which comprises subjecting said compounds to distillation conditions in the presence of oxygen and an effective amount of asphaltene as a polymerization inhibitor.