Timer for an item

Hello guys! I need some help. I want to make an item that will turn into another item after, let's say, one minute.

I have an item Glass Grid. It can be smelted into Hot Glass Grid in furnace. And after one minute since smelting, Hot Glass Grid must turn back into Glass Grid. It doesn't matter where Hot Glass Grid is. The time should start right after it been smelted. I would be grateful if someone could help me.