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:
May. 13, 1997
Filed:
Aug. 23, 1994
Applicant:
Inventors:
John W College, Pittsburgh, PA (US);
Joel H Beeghly, Bessemer, PA (US);
K Dale Ritchey, Beckley, WV (US);
Virupax C Baligar, Beckley, WV (US);
Ralph B Clark, Charleston, WV (US);
Assignees:
Dravo Lime Company, Pittsburgh, PA (US);
U.S. Department of Agriculture, Beltsville, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
71 62 ; 71 61 ; 71903 ; 47DI / ;
Abstract
A method of ameliorating acid soils so as to enhance plant growth is provided by adding to soil 0.05 to 20 percent by weight, based on the weight of the soil, of a flue gas desulfurization by-product consisting essentially of 80-99 percent by weight of gypsum (CaSO.sub.4.2H.sub.2 O) and 1-20 percent by weight of magnesium hydroxide (Mg(OH).sub.2).