Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330313 | Preheat hopper agitators | Mark A. Propster, Stephen Seng | 1982-05-18 |
| 4330314 | Apparatus and process for predrying and preheating glass batch agglomerates before melting | Mark A. Propster, Stephen Seng | 1982-05-18 |
| 4330316 | Method of preheating glass pellets | Mark A. Propster, Stephen Seng | 1982-05-18 |
| 4328016 | Method and apparatus for drying glass batch pellets | Mark A. Propster, Stephen Seng | 1982-05-04 |
| 4319903 | Method and apparatus for preheating glass batch | Mark A. Propster, Stephen Seng | 1982-03-16 |
| 4316732 | Bypass wedge for drying and preheating glass batch agglomerates | Mark A. Propster | 1982-02-23 |
| 4248615 | Pollution abating, energy conserving glass manufacturing process | Stephen Seng, Richard K. Henry, Mark A. Propster | 1981-02-03 |
| 4248616 | Pollution abating, energy conserving glass manufacturing apparatus | Stephen Seng, Richard K. Henry, Mark A. Propster | 1981-02-03 |
| 4243423 | Glass manufacturing | — | 1981-01-06 |
| 4235618 | Glass manufacturing process employing glass batch pellets | Richard K. Henry, Stephen Seng, Mark A. Propster | 1980-11-25 |
| 4225543 | Method for determining the pellet size distribution of a pelletizer and for controlling the output of such pelletizer | — | 1980-09-30 |
| 4184861 | Energy efficient apparatus and process for manufacture of glass | Thomas D. Erickson | 1980-01-22 |