E01B 2203/067
Special methods for posing or quantifying ballast
E01B2203/067 (Special methods for posing or quantifying ballast) appears on 9 US grants and 0 published applications in this corpus.
Search patents in E01B- Granted patents
- 9
- Published applications
- 0
- Assignees
- 4
- Inventors
- 9
- Latest grant
- 2 Feb 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Stone metering system for railroad track maintenance vehicle2 Feb 1999US 5,865,592 APandrol Jackson, Inc.
- Stone metering system for railroad track maintenance vehicle17 Dec 1996US 5,584,641 APandrol Jackson, Inc.
- Stoneblower having adjustable workheads and improved blowing tubes26 Nov 1996US 5,577,446 APandrol Jackson, Inc.
- Ballast tamping machine with flexible ballast conveying tubes mounted on the carrier frame of the tamping heads to place ballast at tamping tools7 Apr 1992US 5,101,733 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H.
- Tool for stone-blowing25 Jul 1989US 4,850,752 AKango Wolf Power Tools Limited
No published applications in this class yet.
Most cited
By later US patents
- Ballast tamping machine with flexible ballast conveying tubes mounted on the carrier frame of the tamping heads to place ballast at tamping tools14US 5,101,733 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1992
- Track leveling and ballast tamping machine13US 4,794,862 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1989
- Stone metering system for railroad track maintenance vehicle9US 5,584,641 APandrol Jackson, Inc. · 1996
- Tool for stone-blowing7US 4,850,752 AKango Wolf Power Tools Limited · 1989
- Stoneblower having adjustable workheads and improved blowing tubes7US 5,577,446 APandrol Jackson, Inc. · 1996