Hi Steve,

I've looked at a few patents in the course of my research. Some
patents (in my mind) were a complete waste of money. In other cases,
I don't know why the product isn't commercialized, but my best guess is
that the "market" didn't want it or it was not cost effective to mass
produce, etc.

Bottom line - I'd do as much research as possible and try to spend as
little $$$ as possible in order to reach a GO / NO GO decision.
There's books and also knowledgeable folks that may be able to offer
guidance (you may pay a little, but it sure beats wasting thousands!)

Beware of the many, many scammers out there, and don't get involved
with anything you see on TV as far as "help for inventors".

Hope this helps. Good luck --Ed