Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12264633 | Cold start catalyst light-off | — | 2025-04-01 |
| 11466320 | Multi-sequence capture system | Jennifer M. Heemstra | 2022-10-11 |
| 10808590 | Selective catalytic reduction adaptation for accuracy and minimized tailpipe impact | Mark A. Shost, Cornelius Opris, Arpit Shukla | 2020-10-20 |
| 10465242 | Multi-sequence capture system | William M. Hanson, Jennifer M. Heemstra | 2019-11-05 |
| 7665261 | Shingle with a rendered shadow design | Bert W. Elliott | 2010-02-23 |
| D572383 | Shingle | — | 2008-07-01 |
| 7240462 | Shingle with a rendered shadow design | Bert W. Elliott | 2007-07-10 |
| 6777023 | Method and apparatus for monitoring granule coloration on an asphalt coated sheet | David Rodenbaugh | 2004-08-17 |
| 6758993 | System and method for minimizing cure-induced residual stress in an epoxy impregnated ignition coil | Carleton L. Berk, Diane Hageman | 2004-07-06 |
| 6692608 | Method of making simulated wood shake shingle having vertical shadow lines | — | 2004-02-17 |
| 6635140 | Shingle synchronization between blend drop and cut, and between pattern and pattern cutter | David Rodenbaugh | 2003-10-21 |
| D480485 | Shingle | — | 2003-10-07 |
| D473326 | Tab portion of a shingle | — | 2003-04-15 |
| D467356 | Shingle | — | 2002-12-17 |
| 6487828 | Tabbed shingles length cut at mid-tab | — | 2002-12-03 |
| D466629 | Shingle | — | 2002-12-03 |
| 6465058 | Magnetic method for depositing granules onto an asphalt-coated sheet | William Huykman, David P. Aschenbeck | 2002-10-15 |
| 6421976 | Shingle for optically simulating a tile roof | Bert W. Elliott, Frank J. Macdonald | 2002-07-23 |
| 6358319 | Magnetic method and apparatus for depositing granules onto an asphalt-coated sheet | William Huykman, David P. Aschenbeck | 2002-03-19 |
| D435671 | Tab portion of a strip shingle | — | 2000-12-26 |
| 6014847 | Laminated roofing shingle having staggered shadow lines and method of making the same | — | 2000-01-18 |
| 4332895 | Thermal stable beta-galactosidase | Mansel Griffiths, David D. Muir | 1982-06-01 |
| 4318725 | Apparatus for discharging a flow of gases | — | 1982-03-09 |
| 4300931 | Method and apparatus for collecting fibrous material | — | 1981-11-17 |
| 4300932 | Apparatus for forming mineral fibers | William W. Schultz | 1981-11-17 |