Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6349569 | Stain-resistant glass making method | Mark Piper, Chris Granley, Roger O'Shaughnessy | 2002-02-26 |
| 5643349 | Apparatus for applying SO.sub.3 to float glass | Mark Piper, Chris Granley, Roger O'Shaughnessy | 1997-07-01 |