N.J. Stat. § 30:4-65
Where, on final hearing, it appears that the patient is possessed of real or personal property and no arrangements have been made for the payment of his maintenance, and no action has been instituted for the appointment of a guardian of his estate, an action may be brought in the Superior Court of the county in which the proceeding for commitment is brought, and such court shall have power to appoint some competent person, resident of this State, guardian of the estate during such commitment.
A guardian so appointed shall conserve the estate for the purpose of maintaining the patient in the institution in which he may be lawfully confined, and is authorized to pay such maintenance under the direction of the Superior Court. He shall furnish a bond as guardian in double the amount of the estate, conditioned for the faithful performance of his duties as guardian. If the chief executive officer of the institution, or the county treasurer of the county in which the institution is located, is appointed guardian, he shall not be required to furnish bond and the Superior Court is authorized to make necessary directions for payment for maintenance. The guardian shall be discharged after accounting, without advertising, upon the death or discharge of the patient from confinement.
N.J.S. § 30:4-65