B29C 66/54
Joining several hollow-preforms
Official title: {Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles}
B29C66/54 (Joining several hollow-preforms) appears on 2,799 US grants and 2,366 published applications in this corpus.
Search patents in B29C- Granted patents
- 2,799
- Published applications
- 2,366
- Assignees
- 1,529
- Inventors
- 5,523
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 13 | 0 |
| 1978 | 31 | 0 |
| 1979 | 21 | 0 |
| 1980 | 29 | 0 |
| 1981 | 34 | 0 |
| 1982 | 25 | 0 |
| 1983 | 27 | 0 |
| 1984 | 29 | 0 |
| 1985 | 32 | 0 |
| 1986 | 40 | 0 |
| 1987 | 31 | 0 |
| 1988 | 46 | 0 |
| 1989 | 40 | 0 |
| 1990 | 44 | 0 |
| 1991 | 49 | 0 |
| 1992 | 41 | 0 |
| 1993 | 47 | 0 |
| 1994 | 37 | 0 |
| 1995 | 43 | 0 |
| 1996 | 51 | 0 |
| 1997 | 58 | 0 |
| 1998 | 65 | 0 |
| 1999 | 58 | 0 |
| 2000 | 70 | 0 |
| 2001 | 88 | 28 |
| 2002 | 67 | 72 |
| 2003 | 62 | 78 |
| 2004 | 52 | 89 |
| 2005 | 37 | 107 |
| 2006 | 45 | 101 |
| 2007 | 44 | 106 |
| 2008 | 50 | 102 |
| 2009 | 52 | 117 |
| 2010 | 75 | 112 |
| 2011 | 87 | 97 |
| 2012 | 84 | 103 |
| 2013 | 71 | 102 |
| 2014 | 87 | 107 |
| 2015 | 81 | 109 |
| 2016 | 71 | 105 |
| 2017 | 83 | 112 |
| 2018 | 96 | 118 |
| 2019 | 107 | 103 |
| 2020 | 101 | 106 |
| 2021 | 88 | 70 |
| 2022 | 74 | 91 |
| 2023 | 65 | 85 |
| 2024 | 66 | 80 |
| 2025 | 54 | 43 |
| 2026 | 28 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 66/542Joining hollow covers or hollow bottoms to open ends of container bodies773
- B29C 66/543Joining more than two hollow-preforms to form said hollow articles606
- B29C 66/545One hollow-preform being placed inside the other514
- B29C 66/541A substantially flat extra element being placed between and clamped by the162
- B29C 66/547Joining several hollow-preforms145
- B29C 66/549Said hollow-preforms being interconnected during their moulding process83
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By later US patents
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