B29C 66/52251
With four right angles
Official title: {with four right angles, e.g. for making +-shaped pieces}
B29C66/52251 (With four right angles) appears on 28 US grants and 16 published applications in this corpus.
Search patents in B29C- Granted patents
- 28
- Published applications
- 16
- Assignees
- 21
- Inventors
- 49
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 4 |
| 2017 | 0 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Tubing coupler moldings and systems, and associated methods1 Jul 2025US 12,343,912 B2Repligen Corporation
- Corrosion-free welded connection for reinforced thermoplastic pipes (RTP)15 Apr 2025US 12,276,358 B2Saudi Arabian Oil Company
- Methods for forming a tubing assembly6 Aug 2024US 12,055,241 B2Meissner Filtration Products, Inc.
- Weld fitting23 Feb 2021US 10,927,991 B2Miraial Co., Ltd.
- Modular molding4 Feb 2020US 10,550,966 B2Meissner Filtration Products, Inc.
- Corrosion-free welded connection for reinforced thermoplastic pipes (rtp)8 Aug 2024US 2024/0263724 A1Saudi Arabian Oil Company
- Tubing coupler moldings and systems, and associated methods22 Jun 2023US 2023/0191671 A1Repligen Corporation
- Methods for forming a tubing assembly23 Apr 2020US 2020/0124210 A1Meissner Filtration Products, Inc.
- Modular molding20 Oct 2016US 2016/0305582 A1Meissner Filtration Products, Inc.
- Method and System of Joining at Least Two Tubular Members29 Sep 2016US 2016/0279865 A1Milliken Infrastructure Solutions, LLC
Most cited
By later US patents
- Tongue and groove snap-fit pipe coupling70US 5,007,666 AC & L Development Inc. · 1991
- Secondary containment system68US 4,805,444 A1989
- Secondary containment system using flexible piping50US 5,040,408 ATotal Containment, Inc. · 1991
- Secondary containment system using flexible piping41US 5,060,509 A1991
- Pipe connector for framework fabrication37US 5,421,666 A1995