E01D 21/00
Methods or apparatus specially adapted for erecting or assembling bridges
E01D21/00 (Methods or apparatus specially adapted for erecting or assembling bridges) appears on 280 US grants and 242 published applications in this corpus.
Search patents in E01D- Granted patents
- 280
- Published applications
- 242
- Assignees
- 189
- Inventors
- 701
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 11 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 3 |
| 2003 | 1 | 2 |
| 2004 | 6 | 5 |
| 2005 | 2 | 6 |
| 2006 | 3 | 5 |
| 2007 | 7 | 10 |
| 2008 | 5 | 5 |
| 2009 | 4 | 5 |
| 2010 | 3 | 1 |
| 2011 | 4 | 12 |
| 2012 | 3 | 8 |
| 2013 | 12 | 9 |
| 2014 | 9 | 6 |
| 2015 | 5 | 7 |
| 2016 | 6 | 12 |
| 2017 | 13 | 13 |
| 2018 | 11 | 10 |
| 2019 | 13 | 22 |
| 2020 | 12 | 15 |
| 2021 | 13 | 13 |
| 2022 | 8 | 16 |
| 2023 | 13 | 15 |
| 2024 | 12 | 18 |
| 2025 | 11 | 17 |
| 2026 | 12 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roadway expansion joint device comprising a rod supporting a flexible element placed between two joint profiles28 Jul 2026US 12,692,670 B2Karlgeir Gruppen AB
- Composite deck structure for bridge and bridge structure and construction method thereof23 Jun 2026US 12,662,781 B2Hunan University
- Formwork system and method2 Jun 2026US 12,644,239 B2Peri SE
- Fabricated rapid construction platform for bridge and control method therefor5 May 2026US 12,618,207 B2Guangxi Transportation Science and Technology Group Co., Ltd.
- Multiple hydraulic robot system for precisely mounting girder28 Apr 2026US 12,611,776 B2Korea Institute of Robot & Convergence
- Method for the manufacture of a bridge made of longitudinal beams and deck slab elements9 Jul 2026US 2026/0193855 A1Kollegger GmbH
- Modular block system for a bearing beam structure28 May 2026US 2026/0146395 A1Redi-Rock International, LLC
- Systems, Devices, and Methods for Creation of a Concrete Structure using a Form and Bracket21 May 2026US 2026/0139476 A1Precasteel, LLC
- Method for intelligent determination of beam tower alignment and suspension cable tensioning of hybrid cable-stayed suspension bridge21 May 2026US 2026/0140008 A1Changsha University of Science and Technology
- Rear-anchored v-shaped pier of steel structure of three-legged star-shaped pedestrian landscape bridge and construction method16 Apr 2026US 2026/0103859 A1China Railway Guangzhou Engineering Group Co., Ltd.
Most cited
By later US patents
- Improvements in concrete roadway-slab forming and form-elevation adjusting means39US 4,123,031 A1978
- Gangway and method for manufacturing same37US 7,950,095 B2Safe Rack LLC · 2011
- Composite structural member with thin deck portion and method of fabricating the same35US 5,978,997 A1999
- Construction of large structures by robotic crane placement of modular bridge sections34US 5,511,268 AThe United States of America as represented by the Secretary of Commerce · 1996
- Pile supported bridge assembly33US 4,977,636 A1990