I never use my own name at home, so there's no reason my cats would refer to me by "Tim" But that's a really interesting question. My guess is that the answer would be "no" because names need language to be expressed and cats' language is more about looks and glances, body postures, position of ears and tail, scents left on things. They don't communicate with each other that much by means of sound, and then usually just for emphasis. For example, when Mellie growls and hisses at Twinkie, it's been preceded by some pretty nasty looks. The vocalizations are just to put an exclamation point on what she's already said to him.
If cats have a name for us, it's more likely to be in a form we can't conceive: a combination of our scents and the sound of our voices I'd suppose. It would be really interesting to get inside a cat's mind and experience what that name is. It's said that cats have a secret name for themselves that no human can ever know, so I suppose they have a secret name for us, too, and that's also a name we can never know.