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. 19, 2008
Filed:
Mar. 04, 2003
Juergen Schroeder, Ludwigshafen, DE;
Klaus Joachim Mueller-engel, Stutensee, DE;
Volker Schliephake, Schifferstadt, DE;
Ulrich Hammon, Mannheim, DE;
Volker Diehl, Ellerstadt, DE;
Ulrich Jaeger, Roemerberg, DE;
Juergen Schroeder, Ludwigshafen, DE;
Klaus Joachim Mueller-Engel, Stutensee, DE;
Volker Schliephake, Schifferstadt, DE;
Ulrich Hammon, Mannheim, DE;
Volker Diehl, Ellerstadt, DE;
Ulrich Jaeger, Roemerberg, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
In process for cleaning tray columns which are used for the purposes of rectifiying liquids comprising (meth)acrylic compounds, a basic liquid is conveyed downward through the tray column and a gas is passed through the column in countercurrent to the basic liquid at an average gas phase differential pressure over all trays of at least 0.5 mbar/tray.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile