Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6941720 | Composite building material | Harvey DeFord, Donald J. Merkley | 2005-09-13 |
| 6760978 | Surface groove system for building sheets | — | 2004-07-13 |
| 6689451 | Pre-finished and durable building material | Weiling Peng, Donald J. Merkley | 2004-02-10 |
| 6572697 | Fiber cement building materials with low density additives | Kalynne H. Paradis, Brian P. Sloane, David L. Melmeth, Dean M. Seligman | 2003-06-03 |
| 6562444 | Fiber-cement/gypsum laminate composite building material | Mark Fisher, Donald J. Merkley | 2003-05-13 |
| 6539643 | Surface groove system for building sheets | — | 2003-04-01 |
| 6506248 | Building products | Steve Duselis, Peter Goodwin, Nigel Kirby, Basil Naji, Anhthe Nguyen +2 more | 2003-01-14 |
| 6346146 | Building products | Steve Duselis, Peter Goodwin, Nigel Kirby, Basil Naji, Anhthe Nguyen +2 more | 2002-02-12 |
| 6030447 | Cement formulation | Basil Naji, Steven Alfred Duselis, Danielle Simone Klimesch, Brian P. Sloane, David Stitt | 2000-02-29 |