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:
Dec. 08, 1998
Filed:
Dec. 03, 1997
Applicant:
Inventors:
Anurag Ateet Gupta, Faridabad-121006, IN;
Krishan Kumar Swamy, Faridabad-121006, IN;
Shanti Prakash, Gurgaon-122001, IN;
Madan Mohan Rai, Faridabad-121007, IN;
Akhilesh Kumar Bhatnagar, Faridabad-121006, IN;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564 73 ; 564-15 ; 564 63 ; 208 24 ; 208289 ; 196 145 ;
Abstract
A process for recovery of solid and reusable urea from the urea adduction process. Refinery streams are subjected to a step of urea adduction for removal of unwanted branched products, aromatics and sulphur. The adduct is purified, dried and then subjected to the step of mechanical shearing.