B29B 7/42
With screw or helix
Official title: with screw or helix
B29B7/42 (With screw or helix) appears on 703 US grants and 728 published applications in this corpus.
Search patents in B29B- Granted patents
- 703
- Published applications
- 728
- Assignees
- 453
- Inventors
- 1,667
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 13 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 11 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 15 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 15 | 6 |
| 2002 | 15 | 12 |
| 2003 | 11 | 9 |
| 2004 | 8 | 21 |
| 2005 | 7 | 13 |
| 2006 | 5 | 16 |
| 2007 | 9 | 14 |
| 2008 | 6 | 10 |
| 2009 | 4 | 20 |
| 2010 | 8 | 19 |
| 2011 | 8 | 15 |
| 2012 | 17 | 25 |
| 2013 | 14 | 27 |
| 2014 | 14 | 33 |
| 2015 | 20 | 38 |
| 2016 | 20 | 35 |
| 2017 | 30 | 47 |
| 2018 | 21 | 34 |
| 2019 | 29 | 45 |
| 2020 | 32 | 50 |
| 2021 | 22 | 47 |
| 2022 | 44 | 67 |
| 2023 | 40 | 46 |
| 2024 | 40 | 38 |
| 2025 | 35 | 29 |
| 2026 | 16 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29B 7/428Parts or accessories267
- B29B 7/421With screw and additionally other mixing elements on the same shaft142
- B29B 7/426With consecutive casings or screws114
- B29B 7/422With screw sections co-operating93
- B29B 7/424With conical screw surrounded by conical casing16
- B29B 7/425With screw surrounded by a casing provided with grooves or cavities14
- B29B 7/427With independently driven screws rotating about the same axis13
Recent patents
- Device and method for processing bulk material18 Aug 2026US 12,709,043 B2Coperion GmbH
- Device for degassing of a two-component multiphase polymer-monomer material and use thereof in a degassing extruder11 Aug 2026US 12,703,123 B2Rohm Co., Ltd.
- Method for regenerating used resin16 Jun 2026US 12,654,360 B2Toyoda Gosei Co., Ltd.
- Compounding extruder for producing polypropylene composition19 May 2026US 12,629,876 B2Sabic Global Technologies B.V.
- Biodegradable resin composition and method for producing same12 May 2026US 12,624,199 B2Hanwha Solutions Corporation
- Process for mixing a fluid meltflow stream24 Sep 2026US 2026/0284612 A1Dow Global Technologies LLC
- Process and apparatus for increasing intrinsic viscosity of polycondensates27 Aug 2026US 2026/0249517 A1EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
- Extrusion apparatus and method of kneading resin raw material30 Jul 2026US 2026/0216940 A1The Japan Streel Works, Ltd.
- Process for the production of polyolefin pellets23 Jul 2026US 2026/0208394 A1Ineos Europe AG
- Apparatus and method for producing a cross-sectionally shaped aerosol-generating material extrudate2 Jul 2026US 2026/0182621 A1Philip Morris Products S. A.
Most cited
By later US patents
- Embedding and encapsulation of controlled release particles188US 6,190,591 B1General Mills, Inc. · 2001
- Surgical adhesives mixing and dispensing implement118US 5,071,040 APfizer Hospital Products Group, Inc. · 1991
- Process for the processing of a thermoplastic polycondensation polymer77US 5,102,594 AStamicarbon B. V. · 1992
- Extruder for plastics74US 6,074,084 AGefinex-Jackson GmbH · 2000
- Thermal crystallization of a molten polyester polymer in a fluid70US 7,192,545 B2Eastman Chemical Company · 2007