B65G 53/4691
Of air-lock type, i.e. at least two valves opening asynchronously
Official title: {of air-lock type, i.e. at least two valves opening asynchronously}
B65G53/4691 (Of air-lock type, i.e. at least two valves opening asynchronously) appears on 41 US grants and 25 published applications in this corpus.
Search patents in B65G- Granted patents
- 41
- Published applications
- 25
- Assignees
- 34
- Inventors
- 90
- Latest grant
- 23 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 3 |
| 2018 | 2 | 3 |
| 2019 | 4 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 5 |
| 2023 | 3 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Bulk material delivery apparatus18US 4,118,075 AWaeschle Maschinenfabrik GmbH · 1978
- Apparatus and process for controlling a charging operation for a feed of particles of bulk material17US 4,674,922 A1987
- Device for accurately controlled feeding of a fine-grained, free-running particulate material15US 4,473,175 ASwiss Aluminium Ltd. · 1984
- Pneumatic conveying system13US 5,160,222 ATech-Air, Inc. · 1992
- Device and method for inwardly transferring bulk material into a pneumatic conveyor line11US 6,802,685 B12004