ORIGINAL: Arthur P
Don't believe everything you read in a wiki.

He filed in '66 but didn't receive the full patent until '69. If ya wanna be technical about it. [8D]But '68 is the usually accepted date for the introduction of compounds.
Actually, there was a doctor who invented a compound in the 30's, but decidedit would never be accepted, so henever applied for a patent.
Art beat me to it again like he usually does!