E04C 5/08
Members specially adapted to be used in prestressed constructions
Official title: Members specially adapted to be used in prestressed constructions {(production of reinforced objects in general B28B23/00; prestressed structures produced in situ E04G21/12)}
E04C5/08 (Members specially adapted to be used in prestressed constructions) appears on 839 US grants and 638 published applications in this corpus.
Search patents in E04C- Granted patents
- 839
- Published applications
- 638
- Assignees
- 399
- Inventors
- 1,198
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 9 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 10 | 0 |
| 1986 | 13 | 0 |
| 1987 | 17 | 0 |
| 1988 | 10 | 0 |
| 1989 | 16 | 0 |
| 1990 | 14 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 10 | 0 |
| 2000 | 11 | 0 |
| 2001 | 16 | 5 |
| 2002 | 19 | 19 |
| 2003 | 20 | 10 |
| 2004 | 16 | 26 |
| 2005 | 12 | 24 |
| 2006 | 9 | 20 |
| 2007 | 15 | 12 |
| 2008 | 5 | 7 |
| 2009 | 6 | 9 |
| 2010 | 23 | 15 |
| 2011 | 19 | 17 |
| 2012 | 17 | 15 |
| 2013 | 15 | 24 |
| 2014 | 23 | 27 |
| 2015 | 30 | 39 |
| 2016 | 30 | 49 |
| 2017 | 35 | 53 |
| 2018 | 41 | 46 |
| 2019 | 38 | 35 |
| 2020 | 39 | 34 |
| 2021 | 31 | 38 |
| 2022 | 31 | 36 |
| 2023 | 29 | 26 |
| 2024 | 33 | 21 |
| 2025 | 20 | 18 |
| 2026 | 11 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Span to span duct coupler25 Aug 2026US 12,716,237 B2
- Irrigation system having improved construction system and adjustable crown height18 Aug 2026US 12,708,077 B2Reinke Manufacturing Co., Inc.
- Post-tensioned concrete with fibers for slabs on supports11 Aug 2026US 12,703,976 B2Ccl Stressing International Ltd
- Anchor for post tensioned concrete reinforcement7 Jul 2026US 12,674,321 B2Post Tension Services Gujarat LLP “Ptsi”
- Optical fiber-embedded PC steel strand, strain measurement device, and production method for optical fiber-embedded pc steel strand9 Jun 2026US 12,650,351 B2Sumitomo Electric Industries, Ltd.
- Reconfigurable precast concrete construction system1 Oct 2026US 2026/0297942 A1Massachusetts Institute of Technology
- Concrete structural body, and method for constructing concrete structural body23 Jul 2026US 2026/0210116 A1Sumitomo Electric Industries, Ltd.
- Construction anchor apparatus, system and methodology2 Jul 2026US 2026/0185653 A1Anchor Ring Solutions, LLC
- Anchorage arrangement25 Jun 2026US 2026/0176833 A1DYWIDAG-Systems International GmbH
- Encapsulation system for post tension anchors and tendons18 Jun 2026US 2026/0168246 A1JDH Pacific
Most cited
By later US patents
- Interactive medication container158US 7,978,564 B22011
- Method, member, and tendon for constructing an anchoring device115US 6,216,403 B1VSL International AG · 2001
- Conical wedges for gripping multi-ply rope or cable112US 3,952,377 A1976
- Hold down device and method92US 6,195,949 B12001
- Post-tension anchor system72US 5,072,558 AVaritech Industries, Inc. · 1991