F27D 25/003
Used for punching tuyeres
Official title: {used for punching tuyeres}
F27D25/003 (Used for punching tuyeres) appears on 6 US grants and 0 published applications in this corpus.
Search patents in F27D- Granted patents
- 6
- Published applications
- 0
- Assignees
- 6
- Inventors
- 10
- Latest grant
- 10 Dec 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Flexible drill rod10 Dec 2002US 6,490,748 B1Kemtech International Pty, Ltd.
- Flame detection monitoring system for detecting blockages in blast furnace injection paths27 Jun 2000US 6,080,223 ABethlehem Steel Corporation
- Apparatus for separating agglomerated particulate matter22 May 1984US 4,449,671 AHylsa, S. A.
- Mechanical punching device for punching the tuyeres of a converter1 Dec 1981US 4,303,229 ANippon Mining Co., Ltd.
- Tuyere sealing means and silencer25 Aug 1981US 4,285,504 AInspiration Consolidated Copper Company
No published applications in this class yet.
Most cited
By later US patents
- Apparatus for separating agglomerated particulate matter18US 4,449,671 AHylsa, S. A. · 1984
- Tuyere sealing means and silencer7US 4,285,504 AInspiration Consolidated Copper Company · 1981
- Flexible drill rod5US 6,490,748 B1Kemtech International Pty, Ltd. · 2002
- Automated installation for punching and cleaning of converter tuyeres4US 4,202,536 AKombinat Gorniczo-Hutniczy Miedzihuta Miedzi "Legnica" · 1980
- Flame detection monitoring system for detecting blockages in blast furnace injection paths3US 6,080,223 ABethlehem Steel Corporation · 2000