| Tektronix | Beaverton, OR | 1977 |
| Boeing Company | Portland, OR | 1977 |
| Freightliner | Portland, OR | 1977 |
| Oregon State University | Corvallis, OR | 1977 |
| MECOP Director's Office | Corvallis, OR | 1977 |
| Blount/Oregon Cutting Systems | Milwaukie, OR | 1979 |
| Intel Corporation | Hillsboro, OR | 1981 |
| A-Dec | Newberg, OR | 1982 |
| Mentor Graphics | Wilsonville, OR | 1984 |
| Electro Scientific Industries | Portland, OR | 1985 |
| PCC Structurals | Portland, OR | 1985 |
| Oregon Freeze Dry | Albany, OR | 1986 |
| Climax Portable Machine Tools | Newberg, OR | 1988 |
| Wah Chang | Albany, OR | 1988 |
| Siltronic Corporation | Portland, OR | 1988 |
| IBM | Beaverton, OR | 1989 |
| Garmin AT | Salem, OR | 1991 |
| GE Security | Tualatin, OR | 1992 |
| Leupold & Stevens | Beaverton, OR | 1992 |
| Planar Systems | Beaverton, OR | 1992 |
| Warn Industries | Clackamas, OR | 1992 |
| Hewlett-Packard | Corvallis, OR | 1993 |
| Frito-Lay | Vancouver, WA | 1994 |
| Merix Corporation | Forest Grove, OR | 1994 |
| Consolidated Metco | Portland, OR | 1995 |
| Eugene Water & Electric Board | Eugene, OR | 1995 |
| UPS | Portland, OR | 1995 |
| Cascade Microtech | Beaverton, OR | 1996 |
| Tyco Electronics/ Precision Interconnect | Wilsonville, OR | 1996 |
| Armstrong World Industries | St. Helens, OR | 1997 |
| ON Semiconductor | Gresham, OR | 1997 |
| RadiSys | Hillsboro, OR | 1997 |
| Credence Systems | Hillsboro, OR | 1998 |
| Datalogic Scanning | Eugene, OR | 1998 |
| InFocus | Wilsonville, OR | 1998 |
| Portland State University | Portland, OR | 1998 |
| CH2M Hill (CECOP) | Corvallis, OR | 1998 |
| City of Eugene | Eugene, OR | 1999 |
| David Evans and Associates | Portland, OR | 1999 |
| W & H Pacific | Portland, OR | 1999 |
| JCI | Eugene, OR | 2000 |
| NACCO Materials Handling Group | Fairview, OR | 2000 |
| Brown and Caldwell | Portland, OR | 2000 |
| City of Portland | Portland, OR | 2000 |
| City of Salem | Salem, OR | 2000 |
| MWH | Portland, OR | 2000 |
| Washington County | Hillsboro, OR | 2000 |
| FEI Company | Hillsboro, OR | 2001 |
| Oregon Institute of Technology | Klamath Falls, OR | 2001 |
| WRG Design | Portland, OR | 2002 |
| Kennedy/Jenks Consultants | Portland, OR | 2002 |
| PPM Technologies | Newberg, OR | 2002 |
| Clark County | Vancouver, WA | 2002 |
| Carestream Health Inc. | White City, OR | 2002 |
| OBEC Consulting Engineers | Eugene, OR | 2003 |
| SR Smith LLC | Canby, OR | 2003 |
| Gerber Legendary Blades | Portland, OR | 2003 |
| States Industries | Eugene, OR | 2003 |
| MTi | Hillsboro, OR | 2003 |
| GeoDesign | Portland, OR | 2003 |
| Leatherman Tool Group | Portland, OR | 2004 |
| OECO | Milwaukie, OR | 2004 |
| CH2M Hill (MECOP) | Portland, OR | 2004 |
| Concept Systems | Albany, OR | 2004 |
| Shaw Environmental, Inc | Portland, OR | 2004 |
| JCR Product Development | Vancouver, WA | 2004 |
| Artex Aircraft Supplies | Aurora, OR | 2004 |
| Genie Industries | Redmond, WA | 2005 |
| MEI, LLC | Albany, OR | 2005 |
| PBS Engineering & Environmental | Portland, OR | 2005 |
| Wallis Engineering | Vancouver, WA | 2005 |
| Walsh Construction Co. | Portland, OR | 2005 |
| Weyerhaeuser | Boise, ID | 2005 |
| City of Springfield | Springfield, OR | 2005 |
| Willamette Valley Company | Eugene, OR | 2005 |
| Veris Industries | Portland, OR | 2005 |
| Hopper Dennis Jellison, PLLC | Vancouver, WA | 2005 |
| Sunrise Water Authority | Portland, OR | 2005 |
| Hanard Machine, Inc. | Salem, OR | 2005 |
| Micro Power Electronics | Hillsboro, OR | 2005 |
| Huntair | Tualatin, OR | 2005 |
| Medallion Cabinetry | Independence, OR | 2005 |
| Moore Excavation | Portland, OR | 2005 |
| Rosen Sunvisor Systems | Eugene, OR | 2005 |
| Benchmark Electronics | Beaverton, OR | 2006 |
| Silver Eagle | Portland, OR | 2006 |
| PECO, Inc | Portland, OR | 2006 |
| Oregon Iron Works | Clackamas, OR | 2006 |
| H.W. Lochner | Salem, OR | 2006 |
| Quincy Engineering | Salem, OR | 2006 |
| Linde | White City, OR | 2006 |
| Vestas Americas | Portland, OR | 2006 |
| Menlo Worldwide | Portland, OR | 2006 |
| Stacy and Witbeck, Inc. | Alameda, CA | 2007 |
| FLIR Systems | Wilsonville, OR | 2007 |
| Coffman Excavation | Oregon City, OR | 2007 |
| Emerald Kalama Chemical, LLC | Kalama, WA | 2007 |
| Welch Allyn | Beaverton, OR | 2007 |
| City of Bend | Bend, OR | 2007 |
| Hamilton Construction | Springfield, OR | 2007 |
| WW Metal Fab | Milwaukie, OR | 2007 |
| Smith, Monroe, and Gray Engineers, Inc. | Beaverton, OR | 2007 |
| VLMK Consulting Engineers | Portland, OR | 2007 |
| West Yost Associates | Davis, CA | 2007 |
| Nautilus Inc. | Vancouver, WA | 2007 |
| City of Gresham | Gresham, OR | 2007 |
| Portland General Electric | Portland, OR | 2007 |