Yours sounds more like a stromboli, and less like a calzone. A true calzone contains ricotta cheese, a stromboli doesn't. Sounds to me like you and pizza hut both ripped off the italians. The difference is that Pizza used theirs for evil corporate profit, and yours was only used for peaceful purposes.
You should have trademarked your products name back in the day, then you could have taken pizza hut's devil money.