Assignee
FLORIDA PROGRESS CORP
US3 patents
Top patents by PatentIndex Score
US4652433AMar 24, 1987
Method for the recovery of minerals and production of by-products from coal ash
FLORIDA PROGRESS CORP178 citations96
US4560391ADec 24, 1985
Alternative fuel comprised of sewage sludge and a liquid hydrocarbon fuel oil
FLORIDA PROGRESS CORP12 citations72
US4477425AOct 16, 1984
Production of anhydrous hydrogen fluoride from low-grade metallic fluorides and sulfuric acid
FLORIDA PROGRESS CORP15 citations72