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. 15, 2002
Filed:
Jul. 23, 1999
Applicant:
Inventors:
John H. Detrick, Birmingham, AL (US);
Garrard L. Hargrove, Birmingham, AL (US);
Assignee:
RLC Technologies, L.L.C., Sylacauga, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05C 9/00 ; C05G 5/00 ;
U.S. Cl.
CPC ...
C05C 9/00 ; C05G 5/00 ;
Abstract
The present invention described a polymer coated fertilizer, such as urea, subsequently coated with a layer of sulfur and thereafter a further coating of polymer. Preferably, the polymer coatings are formed by the direct in situ co-polymerization of the components of the polymer on the fertilizer and on the sulfur coating. The compositions provide positive controlled release characteristics, are abrasion and impact resistant and are substantially more economical to produce than polymer coated fertilizers.