B29C 48/32
With annular openings
Official title: with annular openings, e.g. for forming tubular articles
B29C48/32 (With annular openings) appears on 1,924 US grants and 1,344 published applications in this corpus.
Search patents in B29C- Granted patents
- 1,924
- Published applications
- 1,344
- Assignees
- 1,053
- Inventors
- 3,570
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 46 | 0 |
| 1977 | 41 | 0 |
| 1978 | 49 | 0 |
| 1979 | 33 | 0 |
| 1980 | 38 | 0 |
| 1981 | 37 | 0 |
| 1982 | 25 | 0 |
| 1983 | 22 | 0 |
| 1984 | 34 | 0 |
| 1985 | 38 | 0 |
| 1986 | 26 | 0 |
| 1987 | 34 | 0 |
| 1988 | 41 | 0 |
| 1989 | 46 | 0 |
| 1990 | 41 | 0 |
| 1991 | 45 | 0 |
| 1992 | 57 | 0 |
| 1993 | 39 | 0 |
| 1994 | 38 | 0 |
| 1995 | 31 | 0 |
| 1996 | 42 | 0 |
| 1997 | 38 | 0 |
| 1998 | 51 | 0 |
| 1999 | 42 | 0 |
| 2000 | 42 | 0 |
| 2001 | 38 | 12 |
| 2002 | 35 | 66 |
| 2003 | 59 | 61 |
| 2004 | 46 | 67 |
| 2005 | 24 | 59 |
| 2006 | 45 | 48 |
| 2007 | 23 | 42 |
| 2008 | 21 | 44 |
| 2009 | 16 | 61 |
| 2010 | 32 | 57 |
| 2011 | 32 | 53 |
| 2012 | 42 | 48 |
| 2013 | 28 | 56 |
| 2014 | 43 | 54 |
| 2015 | 39 | 51 |
| 2016 | 36 | 45 |
| 2017 | 27 | 63 |
| 2018 | 38 | 67 |
| 2019 | 49 | 49 |
| 2020 | 61 | 59 |
| 2021 | 32 | 50 |
| 2022 | 43 | 52 |
| 2023 | 41 | 49 |
| 2024 | 32 | 53 |
| 2025 | 42 | 46 |
| 2026 | 24 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 48/34Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the729
- B29C 48/335Multiple annular extrusion nozzles in coaxial arrangement651
- B29C 48/33With parts rotatable relative to each other261
- B29C 48/325Being adjustable , i.e. having adjustable exit sections260
Recent patents
- Monitoring system for straw manufacturing apparatus22 Sep 2026US 12,741,408 B2New WinCup Holdings, Inc.
- Extruder assembly25 Aug 2026US 12,715,168 B2Milacron Marketing Company LLC
- Starch-based packaging material, apparatus and method for making same21 Jul 2026US 12,686,543 B2New Starch Solutions, LLC
- Reticular structure and process for making the same26 May 2026US 12,635,620 B2Tenax S.P.A.
- Optical fiber and a glass preform manufacturing method5 May 2026US 12,617,707 B2
- Method and apparatus for obtaining doses for forming an annular seal10 Sep 2026US 2026/0264304 A1Sacmi Cooperativa Meccanici Imola Societa' Cooperativa
- Modular Nozzle for Coaxial Extrusion10 Sep 2026US 2026/0264305 A1Cellink Bioprinting AB
- Blow up ratios in foamed sheet production processes27 Aug 2026US 2026/0249535 A1Eastman Chemical Company
- Component for an extrusion line13 Aug 2026US 2026/0233451 A1Battenfeld-Cincinnati Germany GmbH
- Method for Quality Control of Extruded Polymeric Material30 Jul 2026US 2026/0216941 A1Ecoo New Technologies
Most cited
By later US patents
- Tubing327US 5,533,985 A1996
- Method and apparatus for solid prototyping279US 5,764,521 AStratasys, Inc. · 1998
- Interfacial surface generator200US 5,094,788 AThe Dow Chemical Company · 1992
- Trilayer, extruded medical tubing and medical devices incorporating such tubing155US 6,165,166 ASchneider (USA) Inc. · 2000
- Perfusion catheter and striped extrusion method of manufacture139US 5,792,300 ACordis Corporation · 1998