Section 305. Registered agent for service of process

(a)  Every  domestic corporation or authorized foreign corporation may
  designate a registered agent in this state  upon  whom  process  against
  such  corporation may be served. The agent shall be a natural person who
  is a resident of or has a business address in this state or  a  domestic
  corporation  or  foreign  corporation  of  any  type  or kind formed, or
  authorized to do business in this state, under this chapter or under any
  other statute of this state.
    (b) Any such designation of a registered agent may be made, revoked or
  changed as provided in this chapter.
    (c) A registered agent  may  resign  as  such  agent.  A  certificate,
  entitled  "Certificate of resignation of registered agent of ...........
  (name  of  designating   corporation)   under   section   305   of   the
  Not-for-Profit Corporation Law", shall be signed by him and delivered to
  the department of state. It shall set forth:
    (1)   That   he  resigns  as  registered  agent  for  the  designating
  corporation.
    (2) The date the certificate of incorporation or the  application  for
  authority  of the designating corporation was filed by the department of
  state.
    (3) That he has sent a copy  of  the  certificate  of  resignation  by
  registered  mail  to  the  designating  corporation  at  the post-office
  address on file in the department of state specified for the mailing  of
  process  or if such address is the address of the registered agent, then
  to the office of the designating corporation in the jurisdiction of  its
  formation or incorporation.
    (d)  The designation of a registered agent shall terminate thirty days
  after the filing  by  the  department  of  state  of  a  certificate  of
  resignation  or  a  certificate containing a revocation or change of the
  designation, whichever is filed earlier. A certificate designating a new
  registered agent may be delivered to the  department  of  state  by  the
  corporation within the thirty days or thereafter.