Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7191663 | Testing apparatus and method of deriving Young's modulus from tensile stress/strain relationships | Virgilio Go Boncan, Thomas Heinold, Robert Dillenbeck | 2007-03-20 |
| 6832652 | Ultra low density cementitious slurries for use in cementing of oil and gas wells | Robert Dillenbeck, Thomas Heinold, Windal Scott Bray | 2004-12-21 |
| 6145591 | Method and compositions for use in cementing | Virgilio G. Boncan, Dan Mueller, Windall Bray | 2000-11-14 |