Okay, a fun little exercise. What brand names can you think of that have become the more common name for the product? I'll start with a few.
Frisbee - every flying disk gets called a Frisbee
Kleenex - no matter what brand of facial tissue
Coke - (regional) some places in the US have adopted "Coke" as any kind of carbonated, sweetened beverage ("What kind of Coke do you want?" "Diet Pepsi." "Okay, great!")
Frigidaire - at least, I have known older people to say "the beer's in the Frigidaire" even they have a Whirlpool
I know there are others. Fire away!
Frisbee - every flying disk gets called a Frisbee
Kleenex - no matter what brand of facial tissue
Coke - (regional) some places in the US have adopted "Coke" as any kind of carbonated, sweetened beverage ("What kind of Coke do you want?" "Diet Pepsi." "Okay, great!")
Frigidaire - at least, I have known older people to say "the beer's in the Frigidaire" even they have a Whirlpool
I know there are others. Fire away!