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:
Feb. 20, 1979
Filed:
Feb. 18, 1977
Giancarlo Paret, Milan, IT;
Ermanno Cinelli, San Donato Milanese, IT;
Snamprogetti, S.p.A., Milan, IT;
Abstract
A multi-stage process for the solvent extraction of isoprene or cyclopentadiene from a mixed feed stock containing the same, piperylene and C-5 saturated and olefinic hydrocarbons is disclosed wherein the feed stock is contacted with N-formyl morpholine and C-5 saturated and olefinic hydrocarbons are separated therefrom in a first stage, the solvent, piperylene and cyclopentadiene present in the feed stock are separated from the isoprene in a second stage, and the solvent is recovered and recycled to the second stage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile