E01B 3/46
Made from different materials
Official title: made from different materials (E01B3/26, E01B3/42 take precedence)
E01B3/46 (Made from different materials) appears on 64 US grants and 78 published applications in this corpus.
Search patents in E01B- Granted patents
- 64
- Published applications
- 78
- Assignees
- 39
- Inventors
- 149
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 0 | 4 |
| 2007 | 1 | 5 |
| 2008 | 1 | 4 |
| 2009 | 1 | 0 |
| 2010 | 2 | 4 |
| 2011 | 4 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 3 |
| 2014 | 3 | 3 |
| 2015 | 3 | 4 |
| 2016 | 1 | 6 |
| 2017 | 3 | 1 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 0 | 6 |
| 2022 | 3 | 6 |
| 2023 | 3 | 9 |
| 2024 | 2 | 2 |
| 2025 | 3 | 3 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polymer-based railroad tie having enhanced ballast interaction2 Jun 2026US 12,644,232 B2Rutgers, The State University of New Jersey
- Polymeric composite, product with polymer composite, dry process for preparing polymer composite, process for preparing a sleeper5 May 2026US 12,617,722 B2Sileto Technologies LLC
- Wood with strengthening coating24 Feb 2026US 12,559,647 B2Tough By Nature, LLC
- Railroad sleeper and process for manufacturing a railroad sleeper1 Jul 2025US 12,344,998 B2Braskem S/A
- Automated spray system to produce an elastomeric pad on a railroad tie6 May 2025US 12,290,826 B2Dow Global Technologies LLC
- Polymer-based railroad tie having enhanced ballast interaction24 Sep 2026US 2026/0286620 A1Rutgers, The State University of New Jersey
- Under sleeper pad16 Jul 2026US 2026/0201653 A1Getzner Werkstoffe Holding GmbH
- Railroad tie elements and related methods2 Apr 2026US 2026/0092413 A1Evertrak LLC
- Extruded pvc glass fiber reinforced railroad tie with enhanced thermal and mechanical stability29 Jan 2026US 2026/0028781 A1
- Wood coating and method4 Sep 2025US 2025/0277130 A1Tough By Nature, LLC
Most cited
By later US patents
- Reinforced molded lignocellulosic crosstie and railway assembly110US 4,150,790 ADant & Russell, Inc. · 1979
- Composite module with reinforced shell81US 4,229,497 AMaso-Therm Corporation · 1980
- Use of recycled plastics for preparing high performance composite railroad ties40US 6,191,228 B1Polywood Inc. · 2001
- Spikeless tie plate fasteners, pre-plated railroad ties and related assemblies and methods37US 7,850,090 B22010
- Composite railroad crosstie36US 6,179,215 B2Primix International, LLC · 2001