B28B 23/04
The elements being stressed
Official title: the elements being stressed
B28B23/04 (The elements being stressed) appears on 149 US grants and 94 published applications in this corpus.
Search patents in B28B- Granted patents
- 149
- Published applications
- 94
- Assignees
- 105
- Inventors
- 277
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 1 | 4 |
| 2004 | 2 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 4 |
| 2007 | 3 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 6 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 6 |
| 2015 | 1 | 3 |
| 2016 | 2 | 3 |
| 2017 | 3 | 5 |
| 2018 | 3 | 10 |
| 2019 | 4 | 5 |
| 2020 | 4 | 5 |
| 2021 | 4 | 9 |
| 2022 | 4 | 6 |
| 2023 | 7 | 3 |
| 2024 | 5 | 7 |
| 2025 | 5 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B28B 23/06For the production of elongated articles50
- B28B 23/043Wire anchoring or tensioning means for the reinforcements48
- B28B 23/046Post treatment to obtain pre-stressed articles29
- B28B 23/12To form prestressed circumferential reinforcements5
- B28B 23/10The shaping being effected by centrifugal or rotational moulding3
Recent patents
- Removal-facilitated anchor sealing device for box girder construction26 May 2026US 12,636,813 B2Yantai University
- Methods and apparatus for coating fibers7 Apr 2026US 12,594,690 B2General Electric Company
- Prefabricated laminated slab made in accordance with pretensioning fibermesh anti-cracking process and manufacturing method thereof2 Dec 2025US 12,486,681 B2Chang An University
- Pre-stressed insulated concrete panels and methods for making and using the same9 Sep 2025US 12,410,614 B2
- Modular slab, slab system, piles and methods of use thereof8 Jul 2025US 12,352,045 B2Junction7 Limited
- Methods and apparatus for coating fibers23 Jul 2026US 2026/0208391 A1General Electric Company
- Ribbonized tows for optimized improved composite performance5 Feb 2026US 2026/0034707 A1Rtx Corporation
- Method, system, and device for pre-tensioning concrete15 May 2025US 2025/0153392 A1
- Roadway conduit systems and methods31 Oct 2024US 2024/0360759 A1Electricwaze LLC
- Pre-stressed insulated concrete panels and methods for making and using the same26 Sep 2024US 2024/0318426 A1
Most cited
By later US patents
- Method for prestressing a body of ceramic material51US 3,960,995 A1976
- Method of manufacturing prestressed concrete culverts37US 4,953,280 AGifford-Hill & Company, Inc. · 1990
- Composite pre-stressed structural member and method of forming same32US 4,646,493 AKeith & Grossman Leasing Co. · 1987
- Prestressed concrete joist32US 5,671,573 ABoard of Regents, University of Nebraska-Lincoln · 1997
- Method of forming concrete structures with a grout splice sleeve which has a threaded connection to a reinforcing bar31US 5,366,672 AERICO International Corporation · 1994