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. 09, 2001
Filed:
Jun. 19, 1998
Applicant:
Inventor:
Vincent A. Welch, Medway, MA (US);
Assignee:
Washington Group International, Inc., Boise, ID (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/42 ; C07C 7/04 ;
U.S. Cl.
CPC ...
B01D 3/42 ; C07C 7/04 ;
Abstract
Apparatus and process are disclosed for the distillation separation of styrene monomer from ethylbenzene utilizing a split feed to two distillation columns in conjunction with cascade reboiling utilizing thermal energy from the overhead of one column to supply heat to the second.