E01C 19/203
Centrifugal spreaders with substantially vertical axis
Official title: {Centrifugal spreaders with substantially vertical axis}
E01C19/203 (Centrifugal spreaders with substantially vertical axis) appears on 163 US grants and 120 published applications in this corpus.
Search patents in E01C- Granted patents
- 163
- Published applications
- 120
- Assignees
- 75
- Inventors
- 243
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 2 |
| 2003 | 3 | 12 |
| 2004 | 9 | 6 |
| 2005 | 5 | 7 |
| 2006 | 3 | 7 |
| 2007 | 2 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 2 |
| 2010 | 5 | 4 |
| 2011 | 6 | 9 |
| 2012 | 1 | 3 |
| 2013 | 8 | 3 |
| 2014 | 1 | 7 |
| 2015 | 6 | 8 |
| 2016 | 7 | 7 |
| 2017 | 10 | 7 |
| 2018 | 2 | 7 |
| 2019 | 4 | 7 |
| 2020 | 7 | 5 |
| 2021 | 4 | 4 |
| 2022 | 3 | 1 |
| 2023 | 3 | 1 |
| 2024 | 2 | 3 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Modular dual wall spreader with liquid storage tanks3 Jun 2025US 12,318,802 B2Oy Hilltip AB
- Salt spreader attachable to earth moving equipment9 Jul 2024US 12,031,283 B2
- Flow divider for spinner spreader9 Jan 2024US 11,865,570 B2Salford Group Inc.
- Salt spreader attachable to earth moving equipment4 Jul 2023US 11,692,321 B2
- Spreader for particulate material with improved spread control30 May 2023US 11,660,633 B2Salford Group Inc.
- Spreader for Spreading Spreadable Material and Spreading Chute2 Oct 2025US 2025/0301942 A1Amazonen-Werke H. Dreyer SE & Co. KG
- Uniform spreading control system25 Sep 2025US 2025/0297432 A1Dartpoint Tech. Co., Ltd.
- Spreading vehicle with sloping spreading discs and filler piece14 Nov 2024US 2024/0376677 A1Ludwig Bergmann GmbH
- Salt spreader attachable to earth moving equipment31 Oct 2024US 2024/0360637 A1
- Material Storage and Spreading System15 Aug 2024US 2024/0271379 A1Apply Right, LLC
Most cited
By later US patents
- Mount and feeder arrangement for a precision placement spreader97US 6,220,532 B1The Louis Berkman Company · 2001
- Spreader assembly89US 6,089,478 ATrynex, Inc. · 2000
- Spreader control85US 4,523,280 ADickey-john Corporation · 1985
- Precision placement spreader67US 5,947,391 AThe Louis Berkman Company · 1999
- Spreader vehicle for solid and liquid thawing materials65US 4,442,979 A1984