B29B 7/489
Screws
Official title: {Screws (B29B7/482 takes precedence)}
B29B7/489 (Screws) appears on 290 US grants and 266 published applications in this corpus.
Search patents in B29B- Granted patents
- 290
- Published applications
- 266
- Assignees
- 176
- Inventors
- 622
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 11 | 0 |
| 2001 | 8 | 3 |
| 2002 | 5 | 5 |
| 2003 | 5 | 8 |
| 2004 | 5 | 8 |
| 2005 | 5 | 9 |
| 2006 | 5 | 7 |
| 2007 | 7 | 3 |
| 2008 | 4 | 6 |
| 2009 | 2 | 12 |
| 2010 | 4 | 11 |
| 2011 | 3 | 20 |
| 2012 | 6 | 14 |
| 2013 | 4 | 10 |
| 2014 | 10 | 13 |
| 2015 | 13 | 12 |
| 2016 | 10 | 11 |
| 2017 | 9 | 24 |
| 2018 | 12 | 11 |
| 2019 | 9 | 17 |
| 2020 | 11 | 11 |
| 2021 | 8 | 12 |
| 2022 | 18 | 15 |
| 2023 | 9 | 7 |
| 2024 | 8 | 6 |
| 2025 | 10 | 6 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Continuous processor utilizing quantum field micro-variable particle interaction7 Apr 2026US 12,594,538 B2
- Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate7 Apr 2026US 12,595,594 B2Aladdin Manufacturing Corporation
- Method and apparatus for the production of a rubber compound used for the manufacture of an article made from rubber or a pneumatic tire technical sector31 Mar 2026US 12,589,523 B2
- Resin extruder , rotor-type screw shaped so that the size of the gap between the screw and the inner surface of the cylinder holding the screw changes, and resin manufacturing method3 Feb 2026US 12,539,658 B2The Japan Steel Works, Ltd.
- Temperature management of rubber mixtures discharged from a converging conical twin-screw mixer6 Jan 2026US 12,515,374 B2Compagnie Generale Des Etablissements Michelin
- Polypropylene composition for injection molding30 Apr 2026US 2026/0117054 A1Centre National de la Recherche Scientifique (CNRS)
- Process for treatment of an initial polypropylene-containing material to produce a polypropylene composition for injection molding23 Apr 2026US 2026/0109083 A1Centre National de la Recherche Scientifique (CNRS)
- Extruder screw for a multi-screw extruder26 Feb 2026US 2026/0054440 A1Gneuss GmbH
- Biaxial continuous kneading extrusion device19 Feb 2026US 2026/0048368 A1CTE Co., Ltd.
- Continuous Extruder Process for Manufacturing Rheology-Modified Polyolefin for Cable Insulation Layer, and Related Products29 Jan 2026US 2026/0027750 A1Dow Global Technologies LLC
Most cited
By later US patents
- Extruder for plastics74US 6,074,084 AGefinex-Jackson GmbH · 2000
- Apparatus for plasticizing and extruding plastic material64US 4,289,409 AHermann Berstorff Maschinenbau GmbH · 1981
- Twin-screw degassing extruder for degassing thermoplastic materials or the like58US 4,423,960 AHermann Berstorff Maschinenbau GmbH · 1984
- Method and equipment for manufacturing pigment dispersion51US 4,474,473 ASakata Shokai, Ltd. · 1984
- Continuous granulating machine51US 4,890,996 AThe Japan Steel Works, Ltd. · 1990