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.

Date of Patent:
Oct. 31, 2006

Filed:

Mar. 25, 2003
Applicants:

Prashant Purushottam Barve, Maharashtra, IN;

Shrikant Madhukar Ghike, Maharashtra, IN;

Ravindra William Shinde, Maharashtra, IN;

Milind Yashwant Gupte, Maharashtra, IN;

Chandrashekhar Narayan Joshi, Maharashtra, IN;

Inventors:

Prashant Purushottam Barve, Maharashtra, IN;

Shrikant Madhukar Ghike, Maharashtra, IN;

Ravindra William Shinde, Maharashtra, IN;

Milind Yashwant Gupte, Maharashtra, IN;

Chandrashekhar Narayan Joshi, Maharashtra, IN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/40 (2006.01); C07C 255/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

Process for recovery of highly pure acrylonitrile by quickly vaporizing under vacuum the contaminated acrylonitrile as well as fresh acrylonitrile followed by contacting with hydrophilic agents in an extractive distillation column using plural number of packed sections.


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