B27M 3/14
Manufacture or reconditioning of specific semi-finished or finished articles: of railroad sleepers
Official title: of railroad sleepers
B27M3/14 (Manufacture or reconditioning of specific semi-finished or finished articles: of railroad sleepers) appears on 14 US grants and 10 published applications in this corpus.
Search patents in B27M- Granted patents
- 14
- Published applications
- 10
- Assignees
- 4
- Inventors
- 17
- Latest grant
- 25 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 2 |
| 2022 | 3 | 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.
- Treatment tank for wood articles10 May 2016US 9,333,670 B2
- Railroad tie end plate attachment method8 Dec 1992US 5,168,627 AKerr-McGee Chemical Corporation
- 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
- Treatment tank for wooden articles20 Oct 2016US 2016/0303758 A1
Most cited
By later US patents
- Apparatus for end-plating elongate members such as railroad ties16US 4,373,652 AMoehlenpah Industries, Inc. · 1983
- Apparatus for end-plating railroad ties13US 4,351,465 AMoehlenpah Industries, Inc. · 1982
- Railroad tie end plate attachment method11US 5,168,627 AKerr-McGee Chemical Corporation · 1992
- Wood cross-tie end plating machine10US 4,657,168 A1987
- Wood cross-tie end plating machine9US 4,513,900 A1985