Yes, Ilford was owned by Ciba for a period of time (I am not sure about this, Simon can throw more light to it, I hope) but the Cibachrome paper was named Cibachrome before that. Actually, Bela Gaspar invented the Dye-Destruction (Dye-Bleach)colour emulsion in 1930, with the first practical success in 32 and 35. The Cibachrome paper was first introduced in 1963, when Ilford was not yet in Ciba's hands. When the shares changed hands and Ciba sold Ilford (it was International Paper that bought them, if I'm not mistaken) with them went the Cibachrome patent. So, the dye-destruction colour paper was renamed "Ilfochrome". But I guess the B&W paper I have in my hands must come from the period when Ilford was in Ciba's hands, that is why I don't understand why they needed to coat their own B&W paper.
I am not sure I am so good in Ilford's (and, especially, Ciba's) history. If I am wrong, please correct me...