|
| US4151400 | 15 jun 1977 | 24 apr 1979 | Autoclave Engineers, Inc. | Autoclave furnace with mechanical circulation |
| US4375998 | 3 apr 1981 | 8 mar 1983 | SMS Schloemann-Siemag Aktiengesellschaft | Method and apparatus for cooling metal strip wound into coils |
| US4596526 | 4 mar 1985 | 24 jun 1986 | Worthington Industries, Inc. | Batch coil annealing furnace and method |
| US4846675 | 1 jun 1987 | 11 jul 1989 | Worthington Industries, Inc. | Annealing furnace |
| US4964798 | 12 jun 1989 | 23 okt 1990 | | Method and apparatus for quickly purging atmosphere gas from bell furnace |
| US5290017 | 1 mar 1993 | 1 mar 1994 | Indugas, Inc. | Cooling cover for batch coil annealing furnace |
| US5340091 | 21 apr 1993 | 23 aug 1994 | Gas Research Institute | Batch coil annealing furnace |
| US7485255 | 31 aug 2004 | 3 feb 2009 | Novelis, Inc. | Self-annealing enclosure |