Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10927030 | Glass product annealing lehr with temperature control system | James Raymond Servais | 2021-02-23 |
| 4687034 | Controlled release insert for a diesel fuel supply nozzle and method of adding a petroleum substrate over said insert | Leonard B. Graiff | 1987-08-18 |
| 4678479 | Diesel fuel composition | Terence M. Evans, Keith King, Leonard B. Graiff | 1987-07-07 |