F27B 2005/146
The heating rods being in the tubes which conduct the heating gases
Official title: {the heating rods being in the tubes which conduct the heating gases}
F27B2005/146 (The heating rods being in the tubes which conduct the heating gases) appears on 5 US grants and 0 published applications in this corpus.
Search patents in F27B- Granted patents
- 5
- Published applications
- 0
- Assignees
- 4
- Inventors
- 8
- Latest grant
- 8 Nov 1994
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven8 Nov 1994US 5,362,031 ALeybold Durfrrit GmbH
- Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven6 Jul 1993US 5,225,142 ALeybold Durferrit GmbH
- Apparatus for controlling gas flows in vacuum furnaces30 Jul 1991US 5,035,611 ADegussa AG
- Vacuum furnace for heat treatment of metallic workpieces26 Sep 1989US 4,869,470 ADegussa AG
- Vacuum oven with gas cooling device16 Dec 1980US 4,239,484 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler
No published applications in this class yet.
Most cited
By later US patents
- Vacuum oven with gas cooling device15US 4,239,484 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler · 1980
- Apparatus for controlling gas flows in vacuum furnaces10US 5,035,611 ADegussa AG · 1991
- Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven8US 5,362,031 ALeybold Durfrrit GmbH · 1994
- Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven3US 5,225,142 ALeybold Durferrit GmbH · 1993
- Vacuum furnace for heat treatment of metallic workpieces1US 4,869,470 ADegussa AG · 1989