Ohio Revised Code Title LVII. Taxation § 5711.16

(1) “Manufacturer” means a person who purchases, receives, or holds personal property for the purpose of adding to its value by manufacturing, refining, rectifying, or combining different materials with a view of making a gain or profit by so doing.

(2) “Manufacturing equipment” means machinery and equipment, and tools and implements, including any associated patterns, jigs, dies, drawings, and business fixtures, used at a manufacturing facility by a manufacturer, and includes any such property leased to the manufacturer. “Manufacturing equipment” excludes property used for general office purposes.  Nothing in this division is to be construed to change the definition of personal property, as defined in section 5701.03 of the Revised Code.

(3) “Manufacturing facility” means a facility or portion of a facility used for manufacturing, mining, refining, rectifying, or combining different materials with a view of making a gain or profit by so doing. “Manufacturing facility” includes that portion of a facility used to store or transport raw materials, work-in-process, or finished goods inventory, for packaging, for research, or to test for quality control, as long as manufacturing, mining, refining, rectifying, or combining is also performed at the facility. “Manufacturing facility” does not include any portion of a facility used primarily for making retail sales.

(4) “Manufacturing inventory” means all articles purchased, received, or otherwise held for the purpose of being used, in whole or in part, in manufacturing, mining, combining, rectifying, or refining, and of all articles that were at any time manufactured or changed in any way by a manufacturer, either by mining, combining, rectifying, refining, or adding thereto.