Proprietary Eponyms

I was thinking the other day of how certain household items are commonly referred to by a brand name, such as Kleenex. Imagine if your company's product becomes "the standard" for every other brand of that item; you're golden! Then through everyday English language, your product gets marketed for free by word of mouth!

Imagine a typical consumer. "Honey, while your out could you pick up some Kleenex?" He goes to the aisle and notices that there's Kleenex amongst other brands. The person first notices Kleenex because it's "the ideal" but since it costs more, he will settle for less. Imagine a consumer always feeling as if they are settling for less by buying another product, simply for the fact that "facial tissue" is called Kleenex!

Which products receive such an honor? Are they the first brand name to come out with a product? Are they the brand that completely obliterates every other competitor? How does this phenomenon happen?

I tried to think of as many as possible:

Kleenex
Band Aid
Xerox
Scotch Tape
Velcro
Post-it
Draino
Coke

These sites list more:
http://rinkworks.com/words/eponyms.shtml
http://www.prairienet.org/~rkrause/brands.html