Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6571420 | Device and process to remove fly ash accumulations from catalytic beds of selective catalytic reduction reactors | Edward Healy, Priya Misra | 2003-06-03 |
| 6131955 | Expansion joint with thermal transition connector | Roger Woodward | 2000-10-17 |
| 6116264 | Dual damper diverter | Frank W. Jurgilas | 2000-09-12 |
| 5918632 | Single-louver damper with double seal | Frank W. Jurgilas, Daniel Kates | 1999-07-06 |
| 5658024 | Expansion joint with a sloped cavity and improved fabric clamping | Bradford H. Hilton | 1997-08-19 |
| 5186205 | Valves for use in controlling the flow of a gas stream through ducts of large cross sectional areas | — | 1993-02-16 |
| 4932437 | Louver dampers for use in gas turbines exhaust systems and having blades protected against becoming warped | — | 1990-06-12 |
| 4919169 | Gas flow diverter | William F. Koch | 1990-04-24 |
| 4905662 | Guillotine dampers with blade sealing means accommodative of thermal expansion forces | — | 1990-03-06 |
| 4848803 | Fabric expansion joints for exhaust systems of gas turbines | — | 1989-07-18 |
| 4832527 | Vertically reciprocable gates for the control of a liquid media | — | 1989-05-23 |
| 4823836 | Dampers with leaf spring seals | William F. Koch | 1989-04-25 |
| 4821507 | Gas flow diverter | William F. Koch | 1989-04-18 |
| 4800919 | Flap gate assembly | — | 1989-01-31 |
| 4732413 | Expansion joints | William F. Koch | 1988-03-22 |
| 4582296 | Composite blade for dampers for ducts of large cross sectional areas | — | 1986-04-15 |
| 4493342 | Double louver damper | — | 1985-01-15 |
| 4493311 | Guillotine damper | — | 1985-01-15 |
| 4327893 | Guillotine damper | John A. Powell, Ralph W. Turner | 1982-05-04 |
| 4299414 | Expansion joint | — | 1981-11-10 |
| 4284376 | Spur gear hobbing machine | Heinz Papistok, Herbert Reuter | 1981-08-18 |