Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D996963 | Clip | William Donnell Allen | 2023-08-29 |
| D994903 | Joist | William Donnell Allen | 2023-08-08 |
| D985802 | Isolated resilient channel | William Donnell Allen | 2023-05-09 |
| D944418 | Double-return joist | W. Donnell Allen | 2022-02-22 |
| 8056303 | Non load-bearing metal wall stud having increased strength | — | 2011-11-15 |
| D606211 | Metal stud | — | 2009-12-15 |
| 7478505 | Metal stud arrangement | — | 2009-01-20 |
| 7383665 | Header arrangement | — | 2008-06-10 |
| 7356970 | Metal building construction | — | 2008-04-15 |
| 6964140 | Structural metal member for use in a roof truss or a floor joist | Steven H. Walker | 2005-11-15 |
| 6436552 | Structural metal framing member | Steven H. Walker | 2002-08-20 |
| 6397550 | Metal structural member | Steven H. Walker | 2002-06-04 |
| 6213679 | Deflection slide clip | Ernest S. Viola | 2001-04-10 |
| 5846018 | Deflection slide clip | Ernest S. Viola | 1998-12-08 |
| 5836131 | Joist hanger | Ernest S. Viola | 1998-11-17 |
| 5720571 | Deflection slide clip | Ernest S. Viola | 1998-02-24 |
| 5687538 | Floor joist with built-in truss-like stiffner | Ernest S. Viola | 1997-11-18 |
| 5561955 | Adjustable sill plate assembly | Ernest S. Viola | 1996-10-08 |