Who is the owner of salvage in net loss basis claim settlement by insurance Co?

I assume that you are referring to an automobile policy where the vehicle was a total loss. The insurance company will pay you the actual cash value of the vehicle but in order to do this title of the vehicle passes to the insurance company which gives them ownership of the vehicle. Some companies will allow you to keep the vehicle but will deduct a negotiated value for the salvage. I highly recommend that you educate yourself about the requirements in your State in dealing with a totalled vehicle. Most States will require the vehicle to be repaired and inspected in order to register the vehicle for road use after which you would receive a salvage title. If you want to use the parts only then these requirements don't pertain to your vehicle.