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:
Jan. 16, 2001
Filed:
Aug. 17, 1999
Applicant:
Inventors:
Arnd St{umlaut over (u)}we, Leverkusen, DE;
J{umlaut over (u)}rgen Linnemann, Neuss, DE;
Jens Herwig, Köln, DE;
Christian Gabel, Dormagen, DE;
Bernd Hohmann, Dormagen, DE;
Joachim Grub, Dormagen, DE;
Assignee:
EC Erdolchemie GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/04 ;
U.S. Cl.
CPC ...
C07C 7/04 ;
Abstract
The production of 1,2-butadiene in purities of at least 85% becomes possible by means of a process in which a polymerization-inhibitor-containing C,hydrocarbon fraction is subjected to at least one fractional distillation.