B29C 66/522
Joining tubular articles
Official title: {Joining tubular articles (B29C66/53241 takes precedence)}
B29C66/522 (Joining tubular articles) appears on 1,605 US grants and 1,099 published applications in this corpus.
Search patents in B29C- Granted patents
- 1,605
- Published applications
- 1,099
- Assignees
- 882
- Inventors
- 2,694
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 18 | 0 |
| 1978 | 26 | 0 |
| 1979 | 13 | 0 |
| 1980 | 13 | 0 |
| 1981 | 20 | 0 |
| 1982 | 32 | 0 |
| 1983 | 15 | 0 |
| 1984 | 22 | 0 |
| 1985 | 26 | 0 |
| 1986 | 31 | 0 |
| 1987 | 33 | 0 |
| 1988 | 32 | 0 |
| 1989 | 30 | 0 |
| 1990 | 38 | 0 |
| 1991 | 28 | 0 |
| 1992 | 42 | 0 |
| 1993 | 30 | 0 |
| 1994 | 38 | 0 |
| 1995 | 41 | 0 |
| 1996 | 36 | 0 |
| 1997 | 30 | 0 |
| 1998 | 40 | 0 |
| 1999 | 35 | 0 |
| 2000 | 35 | 0 |
| 2001 | 32 | 9 |
| 2002 | 33 | 23 |
| 2003 | 29 | 36 |
| 2004 | 19 | 25 |
| 2005 | 18 | 28 |
| 2006 | 16 | 44 |
| 2007 | 15 | 38 |
| 2008 | 16 | 32 |
| 2009 | 13 | 39 |
| 2010 | 26 | 50 |
| 2011 | 27 | 41 |
| 2012 | 24 | 55 |
| 2013 | 37 | 43 |
| 2014 | 44 | 57 |
| 2015 | 39 | 70 |
| 2016 | 47 | 69 |
| 2017 | 44 | 64 |
| 2018 | 49 | 41 |
| 2019 | 73 | 48 |
| 2020 | 45 | 51 |
| 2021 | 43 | 49 |
| 2022 | 50 | 53 |
| 2023 | 44 | 42 |
| 2024 | 40 | 49 |
| 2025 | 34 | 25 |
| 2026 | 17 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 66/5221For forming coaxial connections, i.e. the tubular articles to be joined forming1,104
- B29C 66/5229Involving the use of a socket600
- B29C 66/5224For forming fork-shaped connections279
- B29C 66/5227For forming multi-tubular articles by longitudinally joining elementary tubular articles wall-to-wall or191
- B29C 66/5223For forming corner connections or elbows133
- B29C 66/5225For forming cross-shaped connections42
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- Double pipe fitting23 Jul 2026US 2026/0210469 A1Georg Ficher Rohrleitungssysteme AG
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Most cited
By later US patents
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- Sterile connection process, apparatus and system156US 4,610,670 AE. I. Du Pont de Nemours and Company · 1986
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