Any cremated remains in the possession of a funeral home in this state that have not been claimed within twelve months after the time of cremation may be disposed of in accordance with this section and section 43-10-06.1. At least thirty days prior to such disposition, any funeral home wishing to dispose of such remains shall send a written notice to the last-known address of the responsible person who directed and provided for the method of final disposition of the human remains to the effect that such remains will be disposed of unless claimed by the person within thirty days from the date of mailing such notice. The notice must be sent by registered mail, return receipt requested.