 The company reports that it holds more than 250 product patents and 40 trademarks, and conducts business in 125 countries.The company was founded in 1981 by Edwin J.Hunter and Paul M. Hunter, to produce a compact landscape sprinkler called the "PGP" (an acronym meaning "professional gear-driven pop-up"), the first sprinkler to utilize "matched-precipitation" regardless of the radii or arc.