> Kodak's "proprietary" chemical is metol and Ilford has always been Phenidone!(posted 8641 days ago)Kodak's trade name for the developing agent commonly known as metol is Elon. I believe Agfa has another trade name for it, as did DuPont, Ansco etc.
Ilford developed Phenidone many years ago and it's used in Microphen and a derivative is used in DD-X. Kodak's trade name for their Phenidone derivative is Dimezone; Phenidone or a derivative is used in HC-110, Xtol, Crawley's FX-37 and (I believe) its variant Paterson FX-39 plus many others.