B29B 7/421
With screw and additionally other mixing elements on the same shaft
Official title: {with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type}
B29B7/421 (With screw and additionally other mixing elements on the same shaft) appears on 142 US grants and 94 published applications in this corpus.
Search patents in B29B- Granted patents
- 142
- Published applications
- 94
- Assignees
- 111
- Inventors
- 309
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 4 |
| 2003 | 4 | 2 |
| 2004 | 3 | 5 |
| 2005 | 3 | 2 |
| 2006 | 3 | 4 |
| 2007 | 3 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 2 |
| 2012 | 1 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 7 |
| 2015 | 4 | 8 |
| 2016 | 7 | 3 |
| 2017 | 6 | 5 |
| 2018 | 3 | 7 |
| 2019 | 5 | 5 |
| 2020 | 4 | 9 |
| 2021 | 3 | 0 |
| 2022 | 8 | 6 |
| 2023 | 4 | 3 |
| 2024 | 3 | 6 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Asymmetrical three-blade screw-type shaft for a mixing and kneading machine3 Jun 2025US 12,318,744 B2Buss AG
- Extruder having extruder screw with multiple degassing zones and diameters for the viscosity-increasing processing of meltable polymers6 May 2025US 12,290,975 B2Gneuss GmbH
- Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or biconvex outer peripheral surface in the top view24 Sep 2024US 12,097,474 B2Buss AG
- Integrated system and method for recycling and processing compound materials25 Jun 2024US 12,017,384 B2Magma IndúStria ComéRcio E ImportaçãO De Produtos TêXteis Ltda.
- Method for preparing pure chitosan fiber9 Jan 2024US 11,866,850 B2Wenzhou Jiayuan Biotechnology Co. Ltd
- A kind of pe spinning filler and its production equipment9 Jan 2025US 2025/0011974 A1Hefeng (Qingdao) Home Textiles Co., Ltd.
- Device and method for processing plastic material3 Oct 2024US 2024/0326291 A1Coperion GmbH
- Material conveying device15 Aug 2024US 2024/0269895 A1ACH Solution GmbH
- Rotor shaft comprising a helix for a dynamic mixer for mixing low- to high-viscosity components8 Aug 2024US 2024/0261743 A2Kulzer GmbH
- Granulator, kneading adjustment mechanism, and method of manufacturing resin pellets27 Jun 2024US 2024/0208106 A1The Japan Steel Works, Ltd.
Most cited
By later US patents
- Embedding and encapsulation of controlled release particles188US 6,190,591 B1General Mills, Inc. · 2001
- Water absorbing agent, manufacturing method thereof, and manufacturing machine thereof69US 6,071,976 ANippon Shokubai Co., Ltd. · 2000
- Extruder assembly for extruding water-curable silane modified polymers54US 4,564,349 AUnion Carbide Corporation · 1986
- Apparatus for producing organic filler-blended resin compositions53US 4,708,623 AChisso Corporation · 1987
- Method and extrusion apparatus for degassing thermoplastic plastics material melts53US 4,902,455 AHermann Berstorff Maschinenbau GmbH · 1990