Salt Lake City ? Walter Fredrick Morrison, the man credited with inventing the Frisbee, has died. He was 90.

Utah House Rep. Kay McIff, an attorney who represented Morrison in a royalties case, says Morrison died at his home in Monroe, Utah, on Tuesday. McIff is from Richfield, Morrison’s original hometown.

Morrison’s son, Walt, told The Associated Press Thursday that “old age caught up” with his father and that he also had cancer.

“He was a nice guy. He helped a lot of people,” Walt Morrison said. “He was an entrepreneur. He was always looking for something to do.”

Morrison sold the production and manufacturing rights to his “Pluto Platter” in 1957. The plastic flying disc was later renamed the “Frisbee,” with sales surpassing 200 million discs. It is now a staple at beaches and college campuses across the country.