Originally Posted by wheelhot
oops, sorry bout that wrong info, I meant the braking surface design (jagged tip)
Other companies were doing that before Shimano as well......
Shimano has a long history of not exactly inventing new stuff, but taking up another design from somewhere else, then refining/changing things to get around the patent(s). They have also at times just waited until a patent ran out, then did nearly the same design.