B65G 69/185
By means of non-sealed systems
Official title: {by means of non-sealed systems}
B65G69/185 (By means of non-sealed systems) appears on 111 US grants and 71 published applications in this corpus.
Search patents in B65G- Granted patents
- 111
- Published applications
- 71
- Assignees
- 61
- Inventors
- 148
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 4 | 8 |
| 2016 | 7 | 13 |
| 2017 | 7 | 2 |
| 2018 | 6 | 4 |
| 2019 | 2 | 5 |
| 2020 | 6 | 5 |
| 2021 | 5 | 5 |
| 2022 | 8 | 8 |
| 2023 | 2 | 3 |
| 2024 | 0 | 1 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for silica dust reduction at well sites23 Sep 2025US 12,421,059 B2Profrac Services, LLC
- High containment discharge station22 Apr 2025US 12,280,971 B2Fydec Holding SA
- Powder supply device7 Jan 2025US 12,187,559 B2Tsukasa Co., Ltd.
- Earth working machine having a dust extraction system with selectable filtration of the extracted dust-laden air26 Dec 2023US 11,851,829 B2Wirtgen GmbH
- Car dumper dust control system25 Jul 2023US 11,708,229 B2Air-Cure Incorporated
- Integrated conveyor system for efficient and automated handling of particulate materials from belly dump trailers17 Sep 2026US 2026/0274479 A1Belly2Box LLC
- Method of Self-Feeding Proppant Delivery to a Blender30 Apr 2026US 2026/0116669 A1Halliburton Energy Services.Inc.
- Sprinkler system for a materials disposal chute and a method of using the same30 Jan 2025US 2025/0032832 A1Chazem Manufacturing, LLC
- Wet Sand Loading System4 Jan 2024US 2024/0002144 A1
- Powder supply device20 Jul 2023US 2023/0227277 A1Tsukasa Co., Ltd.
Most cited
By later US patents
- Methods and systems to transfer proppant for fracking with reduced risk of production and release of silica dust at a well site99US 9,340,353 B2Oren Technologies, LLC · 2016
- Dust suppressor apparatus65US 4,552,573 ACargill, Incorporated · 1985
- Coal stacking tower dust control system55US 4,306,895 ADravo Corporation · 1981
- Methods and systems to transfer proppant for fracking with reduced risk of production and release of silica dust at a well site55US 9,969,564 B2Oren Technologies, LLC · 2018
- Adjustable hood assembly54US 5,345,982 AGriffin Environmental Company, Inc. · 1994