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:
Jan. 26, 1988
Filed:
Mar. 20, 1986
Applicant:
Inventors:
William P Thomas, Winter Haven, FL (US);
William S Lawton, Lakeland, FL (US);
Assignee:
American Petro Mart, Inc., Bartow, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05B / ;
U.S. Cl.
CPC ...
71 34 ; 71 43 ; 423313 ; 4233 / ;
Abstract
A stable ammonium polyphosphate liquid fertilizer is prepared from concentrated wet-process phosphoric acid of 54-62% P.sub.2 O.sub.5, which prior to concentration is treated with a cation exchange resin to remove magnesium and calcium without appreciable reduction of iron and aluminum. The liquid fertilizer will remain substantially sludge-free when stored at 25.degree. C. for six months without the addition of any sequestering or suspending agent.