Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11815403 | Specialty control thermocouple for vacuum heat treat furnaces | — | 2023-11-14 |
| 11053560 | High pressure rapid gas quenching vacuum furnace utilizing an isolation transformer in the blower motor power system to eliminate ground faults from electrical gas ionization | George G. Andress, IV | 2021-07-06 |
| 8088328 | Vacuum nitriding furnace | — | 2012-01-03 |
| 7721717 | Diesel fuel filter | Anthony DeVere Edwards | 2010-05-25 |
| 7514035 | Versatile high velocity integral vacuum furnace | — | 2009-04-07 |
| 7164050 | Preparation of halo-olefin | Stephen A. Cottrell | 2007-01-16 |
| 6936792 | Furnace cart and load transfer system for high temperature vacuum furnaces and process therefor | — | 2005-08-30 |
| 6427284 | Central vacuum hose storage | Clyde W. Harrelson, II | 2002-08-06 |
| 6111908 | High temperature vacuum heater supporting mechanism with cup shaped shield | — | 2000-08-29 |
| 6023487 | Process for repairing heat treating furnaces and heating elements therefor | — | 2000-02-08 |
| 6021155 | Heat treating furnace having improved hot zone | — | 2000-02-01 |
| 5256388 | Method for consistently producing carbon black having a high tint | Alan C. Berg | 1993-10-26 |
| D334631 | Combined cigarette filter and container for cigarette smoke | — | 1993-04-06 |
| 5069882 | Carbon black reactor with a choke extension | — | 1991-12-03 |
| 5009854 | Axial reactor with coaxial oil injection | — | 1991-04-23 |
| 4927607 | Non-cylindrical reactor for carbon black production | Alan C. Berg | 1990-05-22 |
| 4856022 | Graphite hot zone assembly | — | 1989-08-08 |
| 4760584 | Hearth support arrangement | — | 1988-07-26 |
| 4692312 | Apparatus for producing carbon black | Meredith N. Dilbert, Glenn J. Forseth, Richard T. Divis | 1987-09-08 |
| 4604056 | Vacuum furnace system hearth | — | 1986-08-05 |
| 4585644 | Changing oil tubes in a carbon black reactor | Richard T. Divis | 1986-04-29 |
| 4582695 | Process for producing carbon black | Meredith N. Dilbert, Glenn J. Forseth, Richard T. Divis | 1986-04-15 |
| 4559246 | Method of increasing the wettability of a surface by a molten metal | — | 1985-12-17 |
| 4489920 | Hot zone chamber wall arrangement for use in vacuum furnaces | — | 1984-12-25 |
| 4490110 | Plenum arrangement | — | 1984-12-25 |