E04C 5/0618
Closed cages with spiral- or coil-shaped stirrup rod
Official title: {Closed cages with spiral- or coil-shaped stirrup rod}
E04C5/0618 (Closed cages with spiral- or coil-shaped stirrup rod) appears on 47 US grants and 49 published applications in this corpus.
Search patents in E04C- Granted patents
- 47
- Published applications
- 49
- Assignees
- 26
- Inventors
- 82
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 4 |
| 2005 | 2 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 0 |
| 2018 | 3 | 4 |
| 2019 | 5 | 3 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 3 | 4 |
| 2023 | 2 | 3 |
| 2024 | 3 | 4 |
| 2025 | 1 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Concrete reinforcement21 Jul 2026US 12,687,019 B2Stanley Wire Limited
- Wall structures of extrudable building material3 Mar 2026US 12,565,768 B2ICON Technology, Inc.
- Retrofitting method for a beam with an opening6 May 2025US 12,291,868 B2National Taiwan University of Science and Technology
- Concrete variable cross-section prefabricated square pile20 Aug 2024US 12,065,801 B2
- Supporting beam for slab systems, slab system, and method for the production thereof16 Apr 2024US 11,959,278 B2Pfeifer Holding GmbH & Co. KG
- Pre-assembly spiral stirrup12 Feb 2026US 2026/0043239 A1Samsung E&A Co., Ltd.
- Concrete reinforcement21 Nov 2024US 2024/0384534 A1Stanley Wire Limited
- Wall structures of extrudable building material2 May 2024US 2024/0141641 A1ICON Technology, Inc.
- Wall structures of extrudable building material15 Feb 2024US 2024/0052653 A1ICON Technology, Inc.
- Wall structures of extrudable building material8 Feb 2024US 2024/0044157 A1ICON Technology, Inc.
Most cited
By later US patents
- Steel rod-reinforced plastic piling39US 6,244,014 B12001
- Three-dimensional iso-tross structure37US 5,921,048 ABrigham Young University · 1999
- Antiseismic spiral stirrups for reinforcement of load bearing structural elements24US 6,293,071 B12001
- Helical reinforcing bar for steel cage in concrete structure13US 4,119,764 ANeturen Co., Ltd. · 1978
- High-aseismic reinforced concrete pier using unbonded high-strength core member13US 6,685,399 B2Kyoto University · 2004