B65G 69/181
By means of sealed systems
Official title: {by means of sealed systems}
B65G69/181 (By means of sealed systems) appears on 259 US grants and 188 published applications in this corpus.
Search patents in B65G- Granted patents
- 259
- Published applications
- 188
- Assignees
- 170
- Inventors
- 415
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 2 |
| 2003 | 8 | 12 |
| 2004 | 9 | 7 |
| 2005 | 4 | 6 |
| 2006 | 1 | 5 |
| 2007 | 5 | 7 |
| 2008 | 4 | 4 |
| 2009 | 4 | 4 |
| 2010 | 6 | 7 |
| 2011 | 3 | 9 |
| 2012 | 3 | 14 |
| 2013 | 8 | 2 |
| 2014 | 10 | 8 |
| 2015 | 6 | 9 |
| 2016 | 10 | 6 |
| 2017 | 4 | 15 |
| 2018 | 14 | 12 |
| 2019 | 6 | 8 |
| 2020 | 9 | 7 |
| 2021 | 7 | 7 |
| 2022 | 9 | 13 |
| 2023 | 3 | 6 |
| 2024 | 8 | 8 |
| 2025 | 8 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transfer device25 Aug 2026US 12,716,536 B2Chargepoint Technology Limited
- Connecting device14 Jul 2026US 12,679,677 B2Hecht Technologie GmbH
- System for conveying proppant to a fracking site hopper2 Jun 2026US 12,643,750 B2Sandbox Enterprises, LLC
- Contained drum discharge system and method for toxic powdery materials10 Feb 2026US 12,544,940 B2
- Isolator13 Jan 2026US 12,521,898 B2Hecht Technologie GmbH
- Device and method for emptying a container with a liner30 Jul 2026US 2026/0217484 A1EMDE Automation GmbH
- Connecting device9 Apr 2026US 2026/0097875 A1
- Powder handling device5 Feb 2026US 2026/0034730 A1General Electric Company
- Transfer adapter for connecting a bag to a container and process of establishing a transfer connection20 Nov 2025US 2025/0353634 A1Lugaia AG
- Closure unit for a bulk material container, container system, emptying station and container emptying system30 Oct 2025US 2025/0333237 A1UCON Container System GmbH
Most cited
By later US patents
- Containerised handling of bulk materials and apparatus therefor149US 7,252,309 B2Bee Kim Ong · 2007
- Hood for discharging the contents of an inverted container99US 5,971,219 A1999
- 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
- Bulk material container with a sliding cam lock closure plate80US 5,697,535 AFabricated Metals, Inc. · 1997
- Closed system and container for dust free loading and unloading of powdered materials73US 4,182,386 ASemi-Bulk Systems, Inc. · 1980