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:
Aug. 12, 1980
Filed:
Jul. 13, 1979
Applicant:
Inventors:
John M Stinson, Sheffield, AL (US);
Horace C Mann, Jr, Killen, AL (US);
John F McCullough, Florence, AL (US);
Assignee:
Tennessee Valley Authority, Muscle Shoals, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05P / ; C05P / ;
U.S. Cl.
CPC ...
71 29 ; 2605 / ; 423308 ; 423312 ; 423315 ;
Abstract
Crystalline urea phosphate is pyrolyzed in one stage to give molten urea ammonium polyphosphates that contains up to 95 percent of the phosphate as polyphosphate. These are then processed into high-analysis solid or liquid fertilizers. Addition of urea to the process to maintain a urea:biuret ratio of at least 16 prevents precipitation of biuret in the liquid fertilizers.