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. 22, 2005
Filed:
Nov. 23, 2001
Applicants:
Jozef Hubert Meessen, Gulpen, NL;
Kees Jonckers, Susteren, NL;
Inventors:
Jozef Hubert Meessen, Gulpen, NL;
Kees Jonckers, Susteren, NL;
Assignee:
DSM N.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C273/00 ;
U.S. Cl.
CPC ...
Abstract
Process for the preparation of urea from ammonia and carbon dioxide, wherein the waste gases released at virtually atmospheric pressure in a urea plant are compressed by an ejector driven by the waste gas from the high-pressure synthesis and are supplied to a medium-pressure absorber. The pressure of the waste gases is increased by 0.15-1 MPa.