B30B 9/121
Screw constructions
Official title: {Screw constructions}
B30B9/121 (Screw constructions) appears on 137 US grants and 99 published applications in this corpus.
Search patents in B30B- Granted patents
- 137
- Published applications
- 99
- Assignees
- 94
- Inventors
- 253
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 6 |
| 2005 | 1 | 4 |
| 2006 | 5 | 4 |
| 2007 | 0 | 0 |
| 2008 | 6 | 3 |
| 2009 | 0 | 5 |
| 2010 | 0 | 2 |
| 2011 | 2 | 2 |
| 2012 | 2 | 0 |
| 2013 | 0 | 7 |
| 2014 | 1 | 1 |
| 2015 | 1 | 7 |
| 2016 | 4 | 7 |
| 2017 | 7 | 9 |
| 2018 | 6 | 4 |
| 2019 | 4 | 2 |
| 2020 | 2 | 8 |
| 2021 | 5 | 8 |
| 2022 | 2 | 3 |
| 2023 | 4 | 6 |
| 2024 | 3 | 6 |
| 2025 | 5 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil-bearing material extraction device and system22 Sep 2026US 12,741,435 B2Msm Milling Pty Ltd
- System and process for converting waste plastic into fuel2 Sep 2025US 12,404,454 B2Braven Environmental, LLC
- Dewatering machine capable of controlling moisture content15 Jul 2025US 12,358,824 B2Korea Institute of Machinery & Materials
- Method for producing a screen body, and screen3 Jun 2025US 12,319,022 B2Andritz Inc.
- Helical screw conveyor unit, worm shaft, worm extruder, and method for providing a worm shaft20 May 2025US 12,304,167 B2Kanadevia Inova AG
- A system for viscous slurry separation and a process thereof20 Aug 2026US 2026/0241657 A1
- Separator device for dewatering wet matter4 Jun 2026US 2026/0151977 A1Vogelsang GmbH & Co. KG
- Helical screw conveyor unit, worm shaft, worm extruder, and method for providing a worm shaft19 Dec 2024US 2024/0416607 A1Hitachi Zosen Inova AG
- Method and device for pressing19 Dec 2024US 2024/0416608 A1Harburg-Freudenberger Maschinenbau GmbH
- Twin screw press for palm oils and similar19 Sep 2024US 2024/0308167 A1C.I. Tequendama S.A.S.
Most cited
By later US patents
- Apparatus and method for the continuous extrusion and partial deliquefaction of oleaginous materials104US 4,901,635 AAnderson International Corp · 1990
- Process for making a product serving as a cultivation support90US 5,087,400 AWogegal S.A. · 1992
- Method and apparatus for grinding chips into paper pulp73US 4,088,528 A1978
- Juice extractor71US 5,906,154 ADong-A Engineering Co., Ltd. · 1999
- Sludge dewatering57US 3,938,434 A1976