| 6,267,017 | 07/30/2001 | Two-Dimensional Array for Electromechanical and Electrochemical Spectroscopy | Michael A. Miller; Stephen J. Hudak, Jr. |
| 7,968,488 | 06/27/2011 | Two-Dimensional Composite Particle Adapted for Use as a Catalyst and Method of Making Same | James H. Arps; Kent Edward Coulter |
| 8,524,364 | 09/02/2013 | Two-Dimensional Composite Particle Adapted for use as a Catalyst and Method of Making Same | James H. Arps; Kent Coulter |
| 9,964,093 | 05/08/2018 | Two-Dimensional Igniter for Testing In-Cylinder Gas Velocity and/or Gas Composition | Jess W. Gingrich; Manfred Amann; Barrett Mangold |
| 10,048,165 | 08/14/2018 | Two-Directional Radial Load and Misalignment Testing Device | Peter M. Lee; Kevin L. Hoag; Riccardo Meldolesi; Anthony Perkins; John W. Miller |
| 9,927,005 | 03/27/2018 | Two-Stage Hypocycloidal Gear Train | Paul B. Hvass; Glynn R. Bartlett |
| 5,740,785 | 04/20/1998 | Two-Way High Pressure Loop, Exhaust Gas Recirculation Valve | Daniel W. Stewart (formerly Daniel W. Dickey); Evan S. Guy |
| 6,171,343 | 01/08/2001 | Ultra High Molecular Weight Polyethylene Components Treated to Resist Shearing and Frictional Wear | Geoffrey Dearnaley; James Lankford, Jr. |
| 3,255,626 | 06/13/1966 | Ultrasonic Apparatus | William R. Van Der Veer |
| 3,221,544 | 12/06/1965 | Ultrasonic Inspection System | Walter A. Gunkel |
