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. 06, 2024
Filed:
May. 07, 2021
Sulzer Management Ag, Winterthur, CH;
Rahul Khandelwal, Katy, TX (US);
Joseph C. Gentry, Houston, TX (US);
Randi Wytcherley, Belgrade, MT (US);
Kimberly Anderson, Bozeman, MT (US);
Meta Naulita-Ellis, Bozeman, MT (US);
Claudia Pudack, Zürich, CH;
Celine Rioual, Chalampé, FR;
Christoph Kirschner, Volketswil, CH;
B. Bryant Slimp, Houston, TX (US);
Manfred Stepanski, Buchs, CH;
Erik Temmel, Basel, CH;
SULZER MANAGEMENT AG, Winterthur, CH;
Abstract
A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.