Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12163361 | Roll-form tie bar and guide for casement window | Zach Pennaz, Douglas A. Nolte | 2024-12-10 |
| 11866968 | Tie bar and guide for casement window | Zach Pennaz, Douglas A. Nolte | 2024-01-09 |
| 10648207 | Opening control device for casement window | — | 2020-05-12 |
| 9593516 | Multi-point mortise lock mechanism for swinging door | Yoshikazu Nakanishi, Manabu Shimoji, Douglas A. Nolte | 2017-03-14 |
| 8550506 | Multi-point mortise lock mechanism for swinging door | Yoshikazu Nakanishi, Manabu Shimoji, Douglas A. Nolte | 2013-10-08 |
| 7900322 | Friction hinge for push-out style window | Thomas G. Soukup, James G. Seaser | 2011-03-08 |