Ohio Rev. Code Ann. § 5505.41
(B) A member of the state highway patrol retirement system who has contributions on deposit with, but is no longer contributing to, a non-uniform retirement system shall, in computing years of service, be given full credit for transferred service credit if a transfer to the state highway patrol retirement system is made under this section. At the request of a member, the non-uniform system shall transfer to the state highway patrol retirement system the sum of the following:
(C) A member with at least eighteen months of contributing service credit with the state highway patrol retirement system who has received a refund of contributions to a non-uniform retirement system shall, in computing years of service, be given full credit for transferred service credit if, for each year of service, the state highway patrol retirement system receives the sum of the following: