(This is a rumor that's making the rounds in the Netnews alt.fusion
discussion; I refer Netnews readers there for more information.)
There's a rumor that a Swedish chemist, back in 1926, submitted a
patent application for a technique of using palladium to turn hydrogen
into helium (essentially, the same setup that's behind the recent
"fusion in a jar" excitement).
There's another rumor that he gave up, because the technique generated
too much heat!