Ohio Rev. Code § 2117.07
An executor or administrator may accelerate the bar against claims against the estate established by section 2117.06 of the Revised Code by giving written notice to a potential claimant that identifies the decedent by name, states the date of the death of the decedent, identifies the executor or administrator by name and mailing address, and informs the potential claimant that any claims the claimant may have against the estate are required to be presented to the executor or administrator in a writing in the manner provided in section 2117.06 of the Revised Code within the earlier of thirty days after receipt of the notice by the potential claimant or six months after the date of the death of the decedent. A claim of that potential claimant that is not presented in the manner provided by section 2117.06 of the Revised Code within the earlier of thirty days after receipt of the notice by the potential claimant or six months after the date of the death of the decedent is barred by section 2117.06 of the Revised Code in the same manner as if it was not presented within six months after the date of the death of the decedent.
R.C. § 2117.07