Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6354113 | Fiber optic draw furnace featuring a fiber optic preform heating and fiber drawing programmable logic controller | — | 2002-03-12 |
| 6257023 | Fiber optic draw furnace having a heating element and a furnace shell, featuring rigidified high purity graphite felt insulation therebetween | Robert A. Spencer | 2001-07-10 |
| 6232583 | Infrared high temperature measurement of optical fiber during draw | — | 2001-05-15 |
| 6044663 | Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace | Robert A. Spencer | 2000-04-04 |
| 5974838 | Optical fiber graphite furnace featuring an automatic shutter door system for feeding an optical preform | Robert A. Spencer | 1999-11-02 |