 In 1897, he patented the Cinéorama, a panoramic film projection system involving ten synchronized projectors.The Cinéorama was demonstrated at the 1900 Exposition Universelle in Paris, but problems with heat from the projectors caused it to be shut down.Despite the failure of his Cinéorama company and of later film work, in the 1920s Grimoin-Sanson would attempt to claim to be one of the major pioneers of film, alongside Marey and the Lumières.