Found Vapor Corp. on NASDAQ, but trend is in the wrong direction
They've got some interesting stuff according to their Sec filing.
Things like
soft tip filter (more like the cellulose filter of real cigarettes) instead of the hard plastic or metal that most cig look a likes have now. (edit: although I just read that Njoy has had this for the past year so maybe Vapor Corp is trying to patent it to get money from those that use it I dont' know, just thinking outloud as I've read about a lot of patent claims that were done only to go after companies that didn't patent the ideas but went ahead and used them anyway)
An e-cig that can you can shake to charge the battery
A biometric fingerprint scanner to ensure that when you leave your e-cig laying about, your children (or anybody else) won't be able to use it, or if you lose it or it's stolen, it becomes basically useless.
In any event some interesting stuff they've filed patents for.