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. 21, 1986
Filed:
Jan. 14, 1985
Norwood K Talbert, Manlius, NY (US);
Other;
Abstract
A fertilizer product consisting of solid, substantially dry, spherical or semi-spherical granules of ammonium sulfate and sewage sludge solids is formed by adding to a quantity of crystalline ammonium sulfate in a mixing vessel a second quantity of water-laden sludge while mixing the two together and driving off water from the sludge until granulation is complete. The sludge is added slowly enough, relative to the rate at which water is removed therefrom, that the ammonium sulfate crystals do not dissolve in the water initially contained in the sludge. Sludge solids effectively fill the voids between individual ammonium sulfate crystals in the resulting granules, thereby producing an end product of improved size and shape.