⁣Stanley Meyer died suddenly on March 20, 1998, while dining at a restaurant. His brother claimed that during a meeting with two Belgian investors in a restaurant, Meyer suddenly ran outside, saying "They poisoned me." After an investigation, the Grove City police went with the Franklin County coroner report that ruled that Meyer, who had high blood pressure, died of a cerebral aneurysm. Some of Meyer's supporters believe that he was assassinated to suppress his inventions. Philippe Vandemoortele, one of the Belgian investors, stated that he had been supporting Meyer financially for several years and considered him a personal friend, and that he has no clue where the rumours came from.


However (according to wikipedia): Meyer's patents have expired. His inventions are now in the public domain, available for all to use without restriction or royalty payment. No engine or vehicle manufacturer has incorporated Meyer's work so far.