B29C 48/40
Using two or more parallel screws or at least two parallel non-intermeshing
Official title: using two or more parallel screws {or at least two parallel non-intermeshing screws}, e.g. twin screw extruders
B29C48/40 (Using two or more parallel screws or at least two parallel non-intermeshing) appears on 1,391 US grants and 1,654 published applications in this corpus.
Search patents in B29C- Granted patents
- 1,391
- Published applications
- 1,654
- Assignees
- 820
- Inventors
- 3,826
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 8 | 0 |
| 1990 | 15 | 0 |
| 1991 | 12 | 0 |
| 1992 | 14 | 0 |
| 1993 | 15 | 0 |
| 1994 | 28 | 0 |
| 1995 | 17 | 0 |
| 1996 | 24 | 0 |
| 1997 | 14 | 0 |
| 1998 | 34 | 0 |
| 1999 | 29 | 0 |
| 2000 | 29 | 0 |
| 2001 | 37 | 7 |
| 2002 | 28 | 37 |
| 2003 | 24 | 36 |
| 2004 | 35 | 44 |
| 2005 | 15 | 48 |
| 2006 | 18 | 32 |
| 2007 | 18 | 44 |
| 2008 | 18 | 52 |
| 2009 | 25 | 70 |
| 2010 | 28 | 68 |
| 2011 | 28 | 71 |
| 2012 | 39 | 66 |
| 2013 | 34 | 68 |
| 2014 | 57 | 99 |
| 2015 | 65 | 89 |
| 2016 | 58 | 70 |
| 2017 | 58 | 80 |
| 2018 | 50 | 65 |
| 2019 | 52 | 72 |
| 2020 | 54 | 88 |
| 2021 | 50 | 69 |
| 2022 | 71 | 96 |
| 2023 | 50 | 91 |
| 2024 | 51 | 85 |
| 2025 | 64 | 62 |
| 2026 | 42 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 48/402The screws having intermeshing parts380
- B29C 48/405Intermeshing co-rotating screws374
- B29C 48/435Sub-screws165
- B29C 48/41Intermeshing counter-rotating screws158
- B29C 48/425Using three or more screws153
- B29C 48/404The screws having non-intermeshing parts50
- B29C 48/42Non-identical or non-mirrored screws30
- B29C 48/415And having partially non-intermeshing screws3
Recent patents
- Material based on polytetrafluoroethylene and process for preparing the same1 Sep 2026US 12,722,336 B2Shandong University
- Screw and twin-screw assembly for use in elastomer mixture extruders and associated method for extrusion of elastomer mixtures11 Aug 2026US 12,703,137 B2Pomini Rubber & Plastics S.r.l.
- Matting polymer composition having excellent weather resistance and impact resistance, and matte sheet including the same11 Aug 2026US 12,703,766 B2Hannanotech Co., Ltd.
- Method for the devulcanisation of a vulcanisaed rubber mixture, device for carrying out the method, as well as a rubber mixture and vehicle pneumatic tyre, comprising a component made of the rubber mixture28 Jul 2026US 12,691,624 B2Continental Reifen Deutschland GmbH
- Thermoplastic resin composition, method of preparing the same, and molded article including the same28 Jul 2026US 12,692,381 B2LG Chem.Ltd.
- Extrudable fiber composite material and its use and production8 Oct 2026US 2026/0307319 A1
- Extruded fluorescent films24 Sep 2026US 2026/0284951 A1UbiQD, Inc.
- Screw elements with improved mixing effect and improved heat transfer, and the use of same24 Sep 2026US 2026/0284952 A1Covestro Deutschland AG
- Extruder10 Sep 2026US 2026/0264306 A1The Japan Steel Works, Ltd.
- Decorative panel and process for producing a panel27 Aug 2026US 2026/0249597 A1CFL Holding Limited
Most cited
By later US patents
- Extruded synthetic wood composition and method for making same236US 5,516,472 AStrandex Corporation · 1996
- Embedding and encapsulation of controlled release particles188US 6,190,591 B1General Mills, Inc. · 2001
- Shaped part for use as a construction material169US 6,022,615 A2000
- Fiber reinforced thermoplastic resin structure, process for production of same, and extruder for production of same148US 5,679,456 AToray Industries, Inc. · 1997
- Biodegradable polymeric compositions based on starch and thermoplastic polymers138US 5,412,005 ANovamont S. p. A. · 1995