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:
Jun. 12, 1990
Filed:
Nov. 03, 1988
Applicant:
Inventors:
Robert J Radel, Florence, AL (US);
Michael D Crenshaw, Florence, AL (US);
Assignee:
Tennessee Valley Authority, Muscle Shoals, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05G / ;
U.S. Cl.
CPC ...
71 27 ; 71902 ; 71903 ;
Abstract
Newly developed testing procedures have demonstrated that three new classes of compounds, the thiopyridine-N-oxides, the thiopyridines, and the thiopyrimidines are highly effective inhibitors of urease activity in agricultural soil systems. Compositions of urea-containing fertilizers in combination with these materials can be used to reduce ammonia loss and control the activity of the soil enzyme urease in the conversion of urea to ammonia.