E01B 3/32
With armouring or reinforcement
Official title: with armouring or reinforcement (hollow sleepers E01B3/30)
E01B3/32 (With armouring or reinforcement) appears on 38 US grants and 31 published applications in this corpus.
Search patents in E01B- Granted patents
- 38
- Published applications
- 31
- Assignees
- 29
- Inventors
- 71
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 4 |
| 2017 | 2 | 2 |
| 2018 | 2 | 2 |
| 2019 | 0 | 1 |
| 2020 | 3 | 0 |
| 2021 | 2 | 3 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Track rail fastening system having cantilevered third rail support bracket and direct fixation fastener assembly for same26 Nov 2024US 12,152,351 B2Progress Rail Services Corporation
- Sleeper for a track superstructure26 Jul 2022US 11,396,728 B2Vossloh Fastening Systems GmbH
- Fiber-reinforced prestressed reinforced concrete sleeper5 Oct 2021US 11,136,724 B2Beijing Tieke Shougang Track Technology Co. , Ltd
- Concrete crosstie19 Jan 2021US 10,895,042 B2
- Durable railway tie22 Sep 2020US 10,781,557 B2The Regents of the University of Michigan
- Direct Fixation Block Assembly15 Jan 2026US 2026/0015802 A1voestalpine Railway Systems Nortrak LLC
- Track rail fastening system having cantilevered third rail support bracket and direct fixation fastener assembly for same16 Jan 2025US 2025/0019907 A1Progress Rail Services Corporation
- Process and system for laying tracks for underground, railway and tramway lines11 Jul 2024US 2024/0229364 A9Overail S.R.L.
- Process and system for laying tracks for underground, railway and tramway lines25 Apr 2024US 2024/0133125 A1Overail S.R.L.
- Track rail fastening system having cantilevered third rail support bracket and direct fixation fastener assembly for same9 Jun 2022US 2022/0178083 A1Progress Rail Services Corporation
Most cited
By later US patents
- Structural members32US 5,573,348 A1996
- Device for monitoring the condition of the superstructure especially of fixed railroad tracks32US 7,023,539 B2Pfleiderer Infrastrukturtechnik GmbH & Co. KG · 2006
- Railway track hold-down hardware21US 4,179,067 A1979
- Mold assembly for pre-stressed concrete railroad ties18US 4,812,113 A1989
- Environmental enclosure structure and method of manufacture13US 5,391,019 A1995