B21K 9/00
Reconditioning railroad accessories
Official title: Reconditioning railroad accessories, e.g. rails
B21K9/00 (Reconditioning railroad accessories) appears on 4 US grants and 2 published applications in this corpus.
Search patents in B21K- Granted patents
- 4
- Published applications
- 2
- Assignees
- 3
- Inventors
- 6
- Latest grant
- 7 Jun 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 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 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Composite profile provided with a support body made of a light metal material and a profiled strip and a method for producing said profile7 Jun 2011US 7,954,611 B2Engineered Products Switzerland Ltd.
- Composite profile with a carrier body of alloy material and a profile strip and a method for production of the composite profile25 Jan 2011US 7,874,412 B2Engineered Products Switzerland Ltd.
- Impact rail forger20 Dec 1983US 4,420,963 AResonant Technology Company
- Method of reclaiming used railroad spikes28 Apr 1981US 4,263,797 A
- Composite profile provided with a support body made of a light metal material and a profiled strip and a method for producing said profile25 Feb 2010US 2010/0044175 A1Alcan Technology & Management Ltd.
- Composite profile with a carrier body of alloy material and a profile strip and a method for production of the composite profile6 Sep 2007US 2007/0207633 A1Engineered Products Switzerland Ltd.
Most cited
By later US patents
- Method of reclaiming used railroad spikes8US 4,263,797 A1981
- Composite profile with a carrier body of alloy material and a profile strip and a method for production of the composite profile2US 7,874,412 B2Engineered Products Switzerland Ltd. · 2011
- Composite profile provided with a support body made of a light metal material and a profiled strip and a method for producing said profile2US 7,954,611 B2Engineered Products Switzerland Ltd. · 2011
- Impact rail forger1US 4,420,963 AResonant Technology Company · 1983