Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9908807 | System for and method of mixed-color cullet characterization and certification, and providing contaminant-free, uniformly colored mixed-color cullet | Sean P. Duffy, Rick Lehman | 2018-03-06 |
| 8631668 | System for and method of mixed-color cullet characterization and certification, and providing contaminant-free, uniformly colored mixed-color cullet | Sean P. Duffy, Rick Lehman | 2014-01-21 |
| 7900476 | System for and method of batch analysis and optimization for glass manufacturing | Richard L. Lehman | 2011-03-08 |
| 7900475 | System for and method of batch analysis and optimization for glass manufacturing | Richard L. Lehman | 2011-03-08 |
| 7565816 | System for and method of batch analysis and optimization for glass manufacturing | Richard L. Lehman | 2009-07-28 |
| 7386997 | System for and method of batch analysis and optimization for glass manufacturing | Richard L. Lehman | 2008-06-17 |
| 7383695 | Method of analyzing mixed-color cullet to facilitate its use in glass manufacture | Richard L. Lehman | 2008-06-10 |