FWIW I have a degree in Japanese and it's Pronounced "Knee-Toe" Pause before makeing the "T" sound and add extra emphasis to the "T". That said Japanese words get butchered over here in the States and eventually it's just easier to "go with the flow" and allow your customers to dictate how to pronounce it. To that end 99% of those I've heard, pronounce it "knit-oh" so incorrect or not, Nitto isn't about to go around changing what their customer call the company.
You see this a lot with Japanese words, for instance:
Tokyo is actually pronounced "Toe-Kyo" Two Sylabals, but Americans mispronounce it as "Toe-Kee-Oh". when a Japanese person is speaking here in English they will pronounce it "Toe-Kee-Oh" instead of "Toe-Kyo" as that is how it is pronounced in English. Likewise The way we pronounce "Munich" in Germany is different from how a German pronounces "Munchin". In Italy if you say "Florence" they have no clue where you're talking about, to them it's "Firenze".
Okay, off the soap box, I just saw this thread and couldn't resist commenting.
[Lurking]Adam [/Lurking]