E01C 19/20
Apparatus for distributing
Official title: Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders ({E01C19/21, E01C19/4813, E01C19/482, E01C23/098, E01C23/166 take precedence; } fertiliser distributors A01C15/00 {; permanently-installed devices for applying gritting or thawing materials E01H10/005; mobile spreaders specially adapted for treating wintry roads E01H10/007})
E01C19/20 (Apparatus for distributing) appears on 397 US grants and 316 published applications in this corpus.
Search patents in E01C- Granted patents
- 397
- Published applications
- 316
- Assignees
- 160
- Inventors
- 626
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 9 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 2 |
| 2002 | 8 | 7 |
| 2003 | 8 | 14 |
| 2004 | 13 | 12 |
| 2005 | 10 | 13 |
| 2006 | 5 | 13 |
| 2007 | 4 | 3 |
| 2008 | 4 | 8 |
| 2009 | 3 | 8 |
| 2010 | 9 | 9 |
| 2011 | 7 | 17 |
| 2012 | 5 | 11 |
| 2013 | 14 | 15 |
| 2014 | 13 | 10 |
| 2015 | 10 | 11 |
| 2016 | 15 | 13 |
| 2017 | 16 | 21 |
| 2018 | 9 | 24 |
| 2019 | 24 | 25 |
| 2020 | 23 | 23 |
| 2021 | 15 | 18 |
| 2022 | 12 | 9 |
| 2023 | 17 | 11 |
| 2024 | 11 | 10 |
| 2025 | 9 | 8 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Auger and conveyor speed control28 Jul 2026US 12,692,671 B2Caterpillar Inc.
- Rolling leverer for sand bed for stone pavers23 Jun 2026US 12,662,780 B2
- Road paver21 Apr 2026US 12,606,965 B2Ningbo Roaby Technology Industrial Group Co., Ltd.
- Gravel spreader16 Dec 2025US 12,497,739 B1
- Spreading machines with improved controls2 Sep 2025US 12,404,636 B2E. D. Etnyre & Co.
- Material Storage and Spreading System12 Feb 2026US 2026/0043206 A1Apply Right, LLC
- Wide Swath Offset Concrete Screed9 Oct 2025US 2025/0314022 A1Dragon Screed LLC
- 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.
- Road paver comprising a material hopper for receiving production material4 Sep 2025US 2025/0277344 A1Joseph Vogele AG
Most cited
By later US patents
- Control system for a mobile material distribution device109US 5,911,362 ADickey-john Corporation · 1999
- Mount and feeder arrangement for a precision placement spreader97US 6,220,532 B1The Louis Berkman Company · 2001
- Material distributing apparatus95US 5,286,158 A1994
- Spreader assembly89US 6,089,478 ATrynex, Inc. · 2000
- Spreader control85US 4,523,280 ADickey-john Corporation · 1985