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:
Jul. 25, 1995
Filed:
Apr. 21, 1993
Applicant:
Inventor:
Antonio Crispoldi, Terni, IT;
Assignee:
Terni Industrie Chimiche S.p.A., Nera Montoro, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05F / ; C05F / ;
U.S. Cl.
CPC ...
71 54 ; 71 58 ;
Abstract
A fertilizer containing Ca, Mg and NH.sub.4 4, having a water content ranging between 15% and 35% in weight and a melting point ranging between 50 and 65 degrees C is prepared by etching of dolomite and/or limestone with nitric acid, neutralization, concentration and granulation (FIG. 1).