B65G 33/00
Screw or rotary spiral conveyors
B65G33/00 (Screw or rotary spiral conveyors) appears on 926 US grants and 730 published applications in this corpus.
Search patents in B65G- Granted patents
- 926
- Published applications
- 730
- Assignees
- 628
- Inventors
- 1,680
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 12 | 0 |
| 1979 | 3 | 0 |
| 1980 | 14 | 0 |
| 1981 | 5 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 17 | 0 |
| 1985 | 12 | 0 |
| 1986 | 13 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 17 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 17 | 0 |
| 1993 | 9 | 0 |
| 1994 | 18 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 12 | 0 |
| 1998 | 14 | 0 |
| 1999 | 16 | 0 |
| 2000 | 12 | 0 |
| 2001 | 16 | 5 |
| 2002 | 11 | 9 |
| 2003 | 6 | 10 |
| 2004 | 12 | 12 |
| 2005 | 8 | 18 |
| 2006 | 9 | 12 |
| 2007 | 10 | 5 |
| 2008 | 10 | 12 |
| 2009 | 9 | 12 |
| 2010 | 7 | 19 |
| 2011 | 13 | 20 |
| 2012 | 17 | 21 |
| 2013 | 20 | 35 |
| 2014 | 27 | 44 |
| 2015 | 41 | 42 |
| 2016 | 35 | 39 |
| 2017 | 48 | 58 |
| 2018 | 47 | 41 |
| 2019 | 44 | 41 |
| 2020 | 42 | 52 |
| 2021 | 38 | 51 |
| 2022 | 32 | 40 |
| 2023 | 39 | 36 |
| 2024 | 39 | 34 |
| 2025 | 29 | 40 |
| 2026 | 21 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Screw having a web formed undercut for an extruder or conveyor1 Sep 2026US 12,722,129 B2EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
- Wellsite proppant storage and transport systems and methods25 Aug 2026US 12,715,704 B1Atlas Sand Company, LLC
- Device for transferring a solid material with endless screw and removable anti-rotation device18 Aug 2026US 12,709,485 B2Rouages
- Powder feeding device4 Aug 2026US 12,698,160 B2SK On Co., Ltd.
- Waterless grease cooling system14 Jul 2026US 12,680,764 B2Wavetek Process Technology, LLC
- Cryogenic auger assembly8 Oct 2026US 2026/0309397 A1
- Pre-depolymerization Hollow Shaft Feed Screw1 Oct 2026US 2026/0296794 A1
- Screw housing and plug screw feeder1 Oct 2026US 2026/0297847 A1Valmet Corporation
- Modular rotating drum type conveying system10 Sep 2026US 2026/0264997 A1
- Wear assembly for a helically formed, metal decanter screw conveyor20 Aug 2026US 2026/0242149 A1Alfa Laval Corporate AB
Most cited
By later US patents
- Apparatus and method of inventorying packages on a storage device132US 6,361,263 B1Pyxis Corporation · 2002
- Concealed drive coupling for use with modular screw conveyor100US 4,691,818 ALaitram, L. L. C. · 1987
- Self propelled bedding dispenser vehicle74US 5,906,471 A1999
- Facility wide mixed mail sorting and/or sequencing system and components and methods thereof70US 8,457,781 B2Lockheed Martin Corporation · 2013
- Auger housing construction62US 4,454,943 AHydreclaim Corporation · 1984