Dec 20, 2012:Siemens’ JT Data Format Accepted as the World’s First ISO International Standard for Viewing and Sharing Lightweight 3D Product Information
Jed Fisher's insight:
JT takes another step forward as a standard for visualization and interchange.
The most common "standards" that I see manufacturers using seem to be JT, DWG, STEP, IFC (in AEC), 3D PDF, and occasionally 3DXML. From 3D/DCC, also FBX.