(a) The corporate charter of any corporation formed under the laws of this state more than three years prior to January 1, 1972, for the purpose of becoming an insurer and which corporation within such three-year period has not actively engaged in business as a domestic insurer under a certificate of authority issued to it by the commissioner under laws then in force is hereby extinguished and nullified.
(b) The corporate charter of any other corporation formed under the laws of this state for the purpose of becoming an insurer and which corporation during any period of 36 consecutive months after January 1, 1972, is not actively engaged in business as a domestic insurer under a certificate of authority issued to it by the commissioner under laws currently in force is automatically hereby extinguished and nullified at the expiration of such 36-month period.
(c) The period during which any such corporation referred to in subsection (b) of this section is the subject of delinquency proceedings under Chapter 32 of this title shall not be counted as part of any such 36-month period.
(d) Upon merger or consolidation of a domestic insurer with another insurer under this chapter, the corporate charter of such merged or consolidated domestic insurer shall thereby automatically be extinguished and nullified.