That was enlightening. Earlier reading this thread I tried to come up with even a single trademark being used as a generic noun in Finnish but failed. But reading that list I spotted a few. Though Adrenalin surely beats the rest hands-down. Epinephrine simply doesn't exist in our language at all, nor in many others, I bet. I always thought the English speakers strange calling it epinephrine...

Over here carbonated soft drinks are called lemonade even if they contain no traces of lemon. I guess lemonade was the first such drink sold here and it stuck.