Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5910084 | Reinforcing structure for vertical frame member of sash frame | Masao Hirano | 1999-06-08 |
| 5822926 | Structure for mounting cremorne lock and reinforcing member in vertical frame element constituting door or window leaf | Masao Hirano | 1998-10-20 |
| 5761860 | Panel mounting structure | Masao Hirano | 1998-06-09 |
| 5758459 | Sash frame structure for attaching glass | Masao Hirano | 1998-06-02 |
| 5749175 | Structure of mating portions of double door assembly | Masao Hirano | 1998-05-12 |
| 5746032 | Structure for attaching a lower transverse frame member of a sash to a lower edge of a building opening | Masao Hirano, Takayuki Okubo | 1998-05-05 |