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:
Nov. 28, 1995
Filed:
Jun. 29, 1994
Applicant:
Inventors:
Daniel Lonchamp, Tassin La Demi Lune, FR;
Yvan Schwob, Cannes, FR;
Assignees:
Institut Francais du Petrole, Rueil Malmaison, FR;
Transvalor, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05C / ; C05F / ; C07C / ;
U.S. Cl.
CPC ...
71 25 ; 71 28 ; 564 63 ;
Abstract
A complex composition formed by the product resulting from the action of urea on a sludge of petroleum origin containing by weight from 50 to 99% of sulfuric acid and from 1 to 20% of organic residues. The acid sludge may contain water and often comes from an alkylation reaction. This composition can be used as a source of fertilizing material or as a component of a fertilizing formulation.