E04F 17/12
Chutes
E04F17/12 (Chutes) appears on 45 US grants and 28 published applications in this corpus.
Search patents in E04F- Granted patents
- 45
- Published applications
- 28
- Assignees
- 22
- Inventors
- 69
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 4 |
| 2016 | 3 | 4 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 4 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mechanical chute for kitchen food waste removal and containment14 Jul 2026US 12,680,317 B1
- Disposal chute17 Jun 2025US 12,331,531 B2
- Methods and systems for automatically determining level of unclosed door in chute applications3 Aug 2021US 11,078,711 B1Elcon A.G.
- Method and apparatus for feeding in and handling waste material15 Sep 2020US 10,773,886 B2Maricap Oy
- Device for transferring elements through a surface4 Feb 2020US 10,549,926 B2Universidad Nacional De Itapua
- Separator assembly for refuse chutes30 Apr 2026US 2026/0116650 A1Hydro Wash Ltd
- Apparatus and method of separating waste23 Oct 2025US 2025/0326572 A1
- Disposal chute3 Oct 2024US 2024/0328173 A1
- A biowaste container and a biowaste collection system15 Aug 2024US 2024/0271401 A1Ber Oy
- Methods and systems for managing airflow and contamination in loading stations and chutes of transport systems27 Jun 2024US 2024/0208724 A1
Most cited
By later US patents
- Device for dumping chute43US 3,980,166 AAktiebolaget Svenska Flaktfabriken · 1976
- Gravity-conveyor chute section32US 4,640,403 A1987
- Refuse recycler28US 4,987,988 A1991
- Separated waste collection system for multi-story building24US 5,031,829 A1991
- Electronic control system for operating a pneumatic trash linen conveying network23US 4,076,321 AEastern Cyclone Industries, Inc. · 1978