E01B 31/26
Inserting or removing inserts or fillings for holes in sleepers
Official title: Inserting or removing inserts or fillings for holes in sleepers, e.g. plugs, sleeves
E01B31/26 (Inserting or removing inserts or fillings for holes in sleepers) appears on 19 US grants and 14 published applications in this corpus.
Search patents in E01B- Granted patents
- 19
- Published applications
- 14
- Assignees
- 12
- Inventors
- 40
- Latest grant
- 25 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 3 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for maintaining wood railroad ties25 Oct 2022US 11,479,920 B1Railroad Solutions, Inc.
- Railroad tie preservation system14 Jun 2022US 11,359,336 B2
- Composition, device, and method for maintaining wood railroad ties22 Feb 2022US 11,255,053 B2Railroad Solutions, Inc.
- Method for manufacturing a railway track support, associated railway track support and railway installation10 Aug 2021US 11,085,153 B2Alstom Transport Technologies
- Railroad tie plugging system13 Apr 2021US 10,975,527 B2Encore Rail Systems, Inc.
- Vision-Based Railway Component Characterization and Method22 Feb 2024US 2024/0060245 A1Racine Railroad Products, Inc.
- Method for maintaining wood railroad ties13 Oct 2022US 2022/0325480 A1Railroad Solutions, Inc.
- Composition and method for maintaining wood railroad ties25 Nov 2021US 2021/0363702 A1Railroad Solutions, Inc.
- Composition, device, and method for maintaining wood railroad ties25 Feb 2021US 2021/0054575 A1Railroad Solutions, Inc.
- Railroad Tie Preservation System26 Mar 2020US 2020/0095734 A1
Most cited
By later US patents
- Railroad tie plug driver21US 4,785,692 A1988
- Wood crossties with cellular plastic inserts14US 4,134,546 AThe Dow Chemical Company · 1979
- Spike hole plugging material11US 4,152,185 ARacine Railroad Products, Inc. · 1979
- Spike hole plugging material10US 4,070,201 ARacine Railroad Products, Inc. · 1978
- Method of securing an anchor with extrusion plastic molding in a solid wall substrate9US 5,161,296 AMechanical Plastics Corp. · 1992