Issued Patents All Time
Showing 25 most recent of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11916509 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2024-02-27 |
| 11025192 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2021-06-01 |
| 10454408 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2019-10-22 |
| 9755573 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2017-09-05 |
| 9270224 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2016-02-23 |
| 9032672 | Photovoltaic roofing elements and photovoltaic roofing systems | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2015-05-19 |
| 8631614 | Roofing product with integrated photovoltaic elements and flashing system | Robert D. Livsey, Joseph Charles Gombarick, Peter Chihlas, Husnu M. Kalkanoglu, Michael E. Blackburn +2 more | 2014-01-21 |
| 6715252 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 2004-04-06 |
| 6523316 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 2003-02-25 |
| 6364374 | Methods and devices for joining panels | Thomas Cuthbertson | 2002-04-02 |
| 6305138 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 2001-10-23 |
| 6237288 | Roofing shingle bearing release material with identifying indicia | Robert L. Jenkins, George F. Wilkins, Norman M. Robinson, Robert E. Oglesby | 2001-05-29 |
| 6195951 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 2001-03-06 |
| 6178703 | Roofing tile, roof and method of assembling | William C. Woellner | 2001-01-30 |
| 6088968 | Baled insulation material blowing apparatus and method | Everett S. Williston, Jr., Jack D. Coulter, Mark Trabbold, David Rivers, Edward Pentz | 2000-07-18 |
| 6044608 | Laminated shingle | Kermit E. Stahl, Joseph Quaranta | 2000-04-04 |
| 6038826 | Stack and package of laminated shingles | Kermit E. Stahl, Joseph Quaranta | 2000-03-21 |
| 6010589 | Method of making laminated shingles | Kermit E. Stahl, Joseph Quaranta | 2000-01-04 |
| 5951809 | Method of providing identifying indicia to a roofing shingle | Robert L. Jenkins, George F. Wilkins, Norman M. Robinson, Robert E. Oglesby | 1999-09-14 |
| 5901517 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 1999-05-11 |
| D388195 | Shingle | Marcia G. Hannah, Kermit E. Stahl, George W. Mehrer, Joseph Quaranta | 1997-12-23 |
| 5660014 | Composite shingle having shading zones in different planes | Kermit E. Stahl, George W. Mehrer | 1997-08-26 |
| D376660 | Shingle | Marcia G. Hannah, Kermit E. Stahl, George W. Mehrer, Joseph Quaranta | 1996-12-17 |
| 5575876 | Method of making hip or ridge shingle | Kermit E. Stahl | 1996-11-19 |
| D375563 | Shingle | Marcia G. Hannah, Kermit E. Stahl, George W. Mehrer, Joseph Quaranta | 1996-11-12 |