Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795661 | Process for the manufacture of asphalt shingles | Alfredo A. Bondoc, Stanley P. Frankoski, Bruno E. Magnus | 1989-01-03 |
| 4717614 | Asphalt shingle | Alfredo A. Bondoc, Stanley P. Frankoski, Bruno E. Magnus | 1988-01-05 |
| 4351873 | Double faced insulating board | — | 1982-09-28 |