obj to iv conversion is typically used for the purpose of exporting Wavefront 3D object files (.obj) to SGI Inventor 3D format (.iv), something that is certainly possible. You can either take advantage of one of the dedicated 3D converters, or use exchange format (like FBX) to act as middle step that will enlarge the pool of possible converters or 3D modeling tools capable of achiveing such export.
Updated: August 9, 2023