B29C 48/2517
Of intermeshing screws
Official title: {of intermeshing screws}
B29C48/2517 (Of intermeshing screws) appears on 50 US grants and 53 published applications in this corpus.
Search patents in B29C- Granted patents
- 50
- Published applications
- 53
- Assignees
- 33
- Inventors
- 72
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 4 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 10 |
| 2012 | 0 | 6 |
| 2013 | 0 | 4 |
| 2014 | 4 | 1 |
| 2015 | 3 | 3 |
| 2016 | 3 | 5 |
| 2017 | 5 | 5 |
| 2018 | 5 | 0 |
| 2019 | 4 | 2 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Extruder comprising a particular arrangement of asymmetrical screw elements on screw shafts2 Jun 2026US 12,643,276 B2Covestro Deutschland AG
- Intermittent extrusion system and extrusion device19 May 2026US 12,629,877 B2Wuyi University
- Screw element having an axially asymmetrical screw profile which has at least two construction points located within the screw profile29 Jul 2025US 12,370,510 B2Covestro Intellectual Property GmbH & Co.KG
- Co-rotating dual speed multi-screw extruder and processing method thereof16 May 2023US 11,648,721 B2Wuyi University
- Counter-rotating differential speed extrusion device, extruder and method for manufacturing materials1 Nov 2022US 11,485,063 B2Wuyi University
- Screw elements with improved mixing effect and improved heat transfer, and the use of same24 Sep 2026US 2026/0284952 A1Covestro Deutschland AG
- Intermittent extrusion system and extrusion device2 Oct 2025US 2025/0303626 A1Wuyi University
- Screw elements with improved mixing effect and pressure build-up19 Jun 2025US 2025/0196077 A1Covestro Deutschland AG
- Element for a counter-rotating twin-screw processor15 May 2025US 2025/0153120 A1Steer Engineering Private Limited
- Element for a counter-rotating twin-screw processor5 Dec 2024US 2024/0401589 A1Steer Engineering Private Limited
Most cited
By later US patents
- Degassing of flowable masses in a multiple-screw extruder47US 7,654,725 B2Buhler AG · 2010
- Mixing apparatus and methods43US 4,752,135 ABaker Perkins Inc. · 1988
- Co-rotating twin-screw kneaders with kneading disks32US 4,824,256 AWerner & Pfleiderer · 1989
- Multi-screw, extrusion-compounding machine with modular mixing elements24US 5,487,602 AFarrel Corporation · 1996
- Fractional and higher lobed co-rotating twin-screw elements24US 6,783,270 B1Steer Engineering (P) Limited · 2004