B29B 7/422
With screw sections co-operating
Official title: {with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing}
B29B7/422 (With screw sections co-operating) appears on 93 US grants and 73 published applications in this corpus.
Search patents in B29B- Granted patents
- 93
- Published applications
- 73
- Assignees
- 58
- Inventors
- 179
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 4 |
| 2005 | 0 | 1 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 3 | 4 |
| 2015 | 3 | 7 |
| 2016 | 2 | 5 |
| 2017 | 5 | 7 |
| 2018 | 4 | 1 |
| 2019 | 3 | 5 |
| 2020 | 5 | 4 |
| 2021 | 2 | 3 |
| 2022 | 6 | 7 |
| 2023 | 3 | 3 |
| 2024 | 7 | 2 |
| 2025 | 4 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mixing and kneading machine with a discharge device which has a degassing device5 Aug 2025US 12,377,596 B2Buss AG
- Asymmetrical three-blade screw-type shaft for a mixing and kneading machine3 Jun 2025US 12,318,744 B2Buss AG
- Complex minute cutting apparatus for super absorbent polymer hydrogel18 Mar 2025US 12,251,856 B2LG Chem.Ltd.
- Screw, extruder and extrusion method28 Jan 2025US 12,208,556 B2Nakata Engineering Co., Ltd.
- Mixing and plasticating machine having a filling device with a separating wall, where the filling device is arranged on a housing of the machine, and method related thereto3 Dec 2024US 12,157,261 B2Buss AG
- Process for mixing a fluid meltflow stream24 Sep 2026US 2026/0284612 A1Dow Global Technologies LLC
- Extruder-mixer5 Feb 2026US 2026/0034524 A1BB Engineering GmbH
- Mixing and kneading machine5 Jun 2025US 2025/0178263 A1Buss AG
- Polyethylene terephthalate resin composition and molded article5 Jun 2025US 2025/0179293 A1Mitsubishi Chemical Corporation
- Particulate water absorbent, absorbent body containing water absorbent, and absorbent article using absorbent body12 Sep 2024US 2024/0299907 A1Nippon Shokubai Co., Ltd.
Most cited
By later US patents
- Screw type apparatus for drying moist polymeric materials33US 3,981,658 AInternational Basic Economy Corporation · 1976
- Apparatus and method for mixing by agitation in a multichambered mixing apparatus including a pre-agitation mixing chamber32US 7,090,391 B2Reika Kogyo Kabushiki Kaisha · 2006
- Apparatus and method for mixing by agitation in a multichambered mixing apparatus including a pre-agitation mixing chamber32US 7,293,909 B2Reika Kogyo Kabushiki Kaisha · 2007
- Continuous kneader31US 4,408,887 A1983
- Extruder mixer30US 4,419,014 ARubber and Plastics Research Association of Great Britain · 1983