Ohio Rev. Code Ann. § 5747.30
(A) As used in this section:
(B) Except as provided in divisions (C) and (D) of this section, a nonresident not otherwise subject to the tax imposed by section 5747.02 of the Revised Code for a taxable year does not become subject to that tax for the taxable year solely by reason of any one or more of the following occurring in this state during all or any portion of the taxable year: