B28B 21/62
Circumferential laterally tensioned
Official title: circumferential {laterally tensioned}
B28B21/62 (Circumferential laterally tensioned) appears on 16 US grants and 6 published applications in this corpus.
Search patents in B28B- Granted patents
- 16
- Published applications
- 6
- Assignees
- 15
- Inventors
- 30
- Latest grant
- 17 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pre-stressed concrete pipe17 Jan 2023US 11,555,562 B1
- Strengthened polyethylene tubular member9 Jul 2019US 10,344,904 B2Milliken Infrastructure Solutions, LLC
- Pre-stress corrosion-resistant tubular pile used in special coastal geological conditions and manufacturing method6 Sep 2016US 9,435,095 B2Jiangsu Dongpu Pile. Co., Ltd.
- Pre-stressed concrete pipe1 Oct 2013US 8,544,505 B1
- Method of reinforcing a cylindrical pipeline and prefabricated plate used in such method25 Mar 2008US 7,347,227 B2Freyssinet International (STUP)
- Novel pre-stressed concrete cylinder pipe with pre-embedded acoustic emission sensor and distributed optical fiber, and manufacturing and monitoring methods thereof15 Jan 2026US 2026/0016448 A1Beijing Hanjianheshan Pipeline Co., Ltd
- Strengthened polyethylene tubular member14 Feb 2019US 2019/0049057 A1Milliken Infrastructure Solutions, LLC
- Ultrathin concrete composite pipe with oriented and localized fiber15 Feb 2018US 2018/0045339 A1Hawkeyepedershaab Concrete Technologies, Inc.
- Pre-stress corrosion-resistant tubular pile used in special coastal geological conditions and manufacturing method17 Dec 2015US 2015/0361633 A1Jiangsu Dongpu Pile. Co., Ltd.
- Void former and method of reinforcing27 Mar 2014US 2014/0083031 A1
Most cited
By later US patents
- Application of inwardly directed prestressing pressure to concrete members14US 4,771,530 AGeneral Atomics · 1988
- Concrete pipes13US 3,950,465 AAmey Roadstone Corporation Limited · 1976
- Bevel pipe winder9US 3,964,522 AUnited States Pipe and Foundry Company · 1976
- Concrete pipes8US 3,945,782 AAmey Roadstone Corporation Limited · 1976
- Bevel pipe winding method and product7US 3,964,521 AUnited States Pipe and Foundry Company · 1976