B29C 48/68
Barrels or cylinders
B29C48/68 (Barrels or cylinders) appears on 442 US grants and 333 published applications in this corpus.
Search patents in B29C- Granted patents
- 442
- Published applications
- 333
- Assignees
- 307
- Inventors
- 945
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 11 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 11 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 12 | 1 |
| 2002 | 3 | 5 |
| 2003 | 3 | 7 |
| 2004 | 10 | 9 |
| 2005 | 1 | 7 |
| 2006 | 6 | 10 |
| 2007 | 4 | 14 |
| 2008 | 6 | 6 |
| 2009 | 11 | 10 |
| 2010 | 8 | 10 |
| 2011 | 2 | 12 |
| 2012 | 6 | 13 |
| 2013 | 9 | 12 |
| 2014 | 9 | 14 |
| 2015 | 12 | 16 |
| 2016 | 12 | 18 |
| 2017 | 9 | 20 |
| 2018 | 10 | 22 |
| 2019 | 16 | 20 |
| 2020 | 15 | 21 |
| 2021 | 14 | 12 |
| 2022 | 14 | 12 |
| 2023 | 14 | 21 |
| 2024 | 9 | 13 |
| 2025 | 17 | 15 |
| 2026 | 8 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 48/685Characterised by their inner surfaces219
- B29C 48/6801Characterised by the material or their manufacturing process74
- B29C 48/682For twin screws72
- B29C 48/681For single screws51
- B29C 48/6803Materials, coating or lining therefor43
- B29C 48/683For more than two screws15
- B29C 48/684Having adaptable feed or discharge locations2
Recent patents
- Filter device for PVC plastic melt for connection to a twin screw extruder and twin screw extruder for PVC processing21 Jul 2026US 12,686,158 B2Gneuss GmbH
- Extruder30 Jun 2026US 12,668,012 B2Sumitomo Heavy Industries Modern, Ltd.
- Machine for applying hot-melt products19 May 2026US 12,629,878 B2Focke Meler Gluing Solutions, S.A.
- Screw machine28 Apr 2026US 12,611,810 B2Shibaura Machine Co., Ltd.
- Reciprocating injection unit7 Apr 2026US 12,594,711 B2Uniloy, Inc.
- Liner for an extruder3 Sep 2026US 2026/0257413 A1Buhler AG
- Extruder16 Jul 2026US 2026/0200159 A1The Japan Steel Works, Ltd.
- Polymer based composite materials with increased thermal conductivity9 Jul 2026US 2026/0193509 A1Eurotec Muhendislik Plastikleri Sanayi Ve Ticaret Anonim Sirketi
- Extruder barrel with separable liner and method of refurbishment18 Jun 2026US 2026/0166801 A1Xaloy, Inc.
- Temperature control device for a plasticizing screw and/or a plasticizing cylinder of a plasticizing unit11 Jun 2026US 2026/0158722 A1
Most cited
By later US patents
- Fiber reinforced thermoplastic resin structure, process for production of same, and extruder for production of same148US 5,679,456 AToray Industries, Inc. · 1997
- Fiber reinforced thermoplastic resin structure, process for production of same, and extruder for production of same126US 5,824,410 AToray Industries, Inc. · 1998
- Water absorbing agent, manufacturing method thereof, and manufacturing machine thereof69US 6,071,976 ANippon Shokubai Co., Ltd. · 2000
- Method of forming members for sealing or baffling67US 7,249,415 B2Zephyros, Inc. · 2007
- Extruder assembly for extruding water-curable silane modified polymers54US 4,564,349 AUnion Carbide Corporation · 1986