Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4514851 | Arc circuit electrodes for arc glass-melting furnace | — | 1985-04-30 |
| 4491951 | Electric glass melting furnace | — | 1985-01-01 |
| 4478627 | Recuperation of heat absorbent media to preheat combustion gases and glass batch | Charles M. Hohman, Mark A. Propster, Stephen Seng | 1984-10-23 |
| 4478628 | Method for controlling the level of molten material in a furnace | — | 1984-10-23 |
| 4468164 | Method and apparatus for feeding raw material to a furnace | Stephen Seng | 1984-08-28 |
| 4433420 | Method and apparatus for determining the level of slag containing iron or iron compounds in a glass melting furnace | — | 1984-02-21 |
| 4422172 | Electrode support mechanism and method | Stephen Seng | 1983-12-20 |
| 4420838 | Electrode replacement apparatus | Stephen Seng | 1983-12-13 |
| 4400815 | Electrode aligning apparatus | Stephen Seng | 1983-08-23 |
| 4397028 | Electrode support mechanism | Stephen Seng, Michael D. Hickman | 1983-08-02 |
| 4385918 | Method and apparatus for feeding raw material to an arc furnace | Stephen Seng | 1983-05-31 |
| 4349376 | Liquid cooled skimmer | Charles M. Hohman | 1982-09-14 |
| 4282019 | Glass manufacturing process with in-situ colemanite calcination and pollution abatement features | Mark A. Propster | 1981-08-04 |