Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11585093 | Skylight dimmer | Joseph Prenn, Kalen Eidenschink | 2023-02-21 |
| 11168480 | Skylight dimmer | Joseph Prenn, Kalen Eidenschink | 2021-11-09 |
| 8955269 | Skylight tube with reflective film and surface irregularities | — | 2015-02-17 |
| 8958157 | Daylighting tube segment connection systems and methods | Thomas Griego, Jeffrey S. Robertson | 2015-02-17 |
| 8601757 | Thermally insulating fenestration devices and methods | Paul August Jaster, Keith Kopitzke, David James Wilson | 2013-12-10 |
| 8568011 | Daylighting devices with auxiliary lighting system and light turning features | Keith Kopitzke, Ding Yao Shay, Paul August Jaster | 2013-10-29 |
| 8098433 | Direct and indirect light diffusing devices and methods | Keith Kopitzke, Ding Yao Shay, Paul August Jaster | 2012-01-17 |
| 8082705 | Skylight tube with reflective structured surface | Paul August Jaster | 2011-12-27 |
| 7621081 | Skylight tube with reflective film and surface irregularities | — | 2009-11-24 |
| 7322156 | Skylight domes with reflectors | Joseph Prenn | 2008-01-29 |
| 7168211 | Tubular skylight with dome flashing and protective waffle pattern corrugation | Joseph Prenn, Christian P. Stevens | 2007-01-30 |
| 7159364 | Skylight flashing | — | 2007-01-09 |
| 7146768 | Skylight tube with reflective film and surface irregularities | — | 2006-12-12 |
| 7040061 | Tubular skylight with dome flashing and protective corrugation | Joseph Prenn, Michael Muhlestein, Christian P. Stevens | 2006-05-09 |
| 6438803 | Systems and methods for connecting skylight components | Joseph Prenn, Philip Edward Warren, Christian P. Stevens, Bing-Ling Chao | 2002-08-27 |
| 6415563 | Systems and methods for connecting skylight components | Joseph Prenn, Philip Edward Warren, Christian P. Stevens, Bing-Ling Chao | 2002-07-09 |
| 6412238 | Systems and methods for connecting skylight components | Joseph Prenn, Philip Edward Warren, Christian P. Stevens, Bing-Ling Chao | 2002-07-02 |
| 6363668 | Systems and methods for connecting skylight components | Joseph Prenn, Philip Edward Warren, Christian P. Stevens, Bing-Ling Chao | 2002-04-02 |
| 6321493 | Systems and methods for connecting skylight components | Joseph Prenn, Philip Edward Warren, Christian P. Stevens, Bing-Ling Chao | 2001-11-27 |
| 6035593 | Tubular skylight with snap assembly and expansion spacer | Bing-Ling Chao, Joseph Prenn, Christian P. Stevens | 2000-03-14 |
| 5896713 | Tubular skylight with vertically adjustable tube and improved roof cover seal | Bing-Ling Chao, Joseph Prenn, Christian P. Stevens | 1999-04-27 |