E01B 2204/13
Dowels for slabs, sleepers or rail-fixings
E01B2204/13 (Dowels for slabs, sleepers or rail-fixings) appears on 5 US grants and 2 published applications in this corpus.
Search patents in E01B- Granted patents
- 5
- Published applications
- 2
- Assignees
- 4
- Inventors
- 22
- Latest grant
- 20 Jul 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Double sleeper for Getrac A3 fixed track20 Jul 2004US 6,764,022 B2Pfleiderer Infrastrukturtechnik GmbH & Co. KG
- Ballast-free permanent rail way having recessed tie with central fastening element25 Jul 1995US 5,435,486 AWalter Bau-Aktiengesellschaft
- Drainage system for a railroad superstructure for supporting sleepers17 May 1994US 5,312,038 A
- Railroad roadway for high speed rail-mounted vehicles6 Mar 1990US 4,905,896 ADyckerhoff & Widmann Aktiengesellschaft
- Components for ballast-less railroad lines laid on pre-fabricated reinforced concrete slabs3 Nov 1987US 4,703,890 AI.P.A. S.p.A. Industria Prefabbricati
Most cited
By later US patents
- Components for ballast-less railroad lines laid on pre-fabricated reinforced concrete slabs6US 4,703,890 AI.P.A. S.p.A. Industria Prefabbricati · 1987
- Railroad roadway for high speed rail-mounted vehicles6US 4,905,896 ADyckerhoff & Widmann Aktiengesellschaft · 1990
- Drainage system for a railroad superstructure for supporting sleepers3US 5,312,038 A1994
- Ballast-free permanent rail way having recessed tie with central fastening element3US 5,435,486 AWalter Bau-Aktiengesellschaft · 1995
- Double sleeper for Getrac A3 fixed track1US 6,764,022 B2Pfleiderer Infrastrukturtechnik GmbH & Co. KG · 2004