B65D 88/26
Hoppers, i.e. containers having funnel-shaped discharge sections
Official title: Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence)
B65D88/26 (Hoppers, i.e. containers having funnel-shaped discharge sections) appears on 471 US grants and 469 published applications in this corpus.
Search patents in B65D- Granted patents
- 471
- Published applications
- 469
- Assignees
- 285
- Inventors
- 791
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 4 |
| 2003 | 4 | 6 |
| 2004 | 2 | 6 |
| 2005 | 4 | 7 |
| 2006 | 4 | 8 |
| 2007 | 2 | 9 |
| 2008 | 1 | 11 |
| 2009 | 7 | 6 |
| 2010 | 5 | 8 |
| 2011 | 3 | 11 |
| 2012 | 2 | 11 |
| 2013 | 11 | 21 |
| 2014 | 11 | 30 |
| 2015 | 21 | 38 |
| 2016 | 26 | 40 |
| 2017 | 40 | 40 |
| 2018 | 22 | 31 |
| 2019 | 29 | 33 |
| 2020 | 51 | 43 |
| 2021 | 28 | 32 |
| 2022 | 28 | 23 |
| 2023 | 14 | 9 |
| 2024 | 25 | 21 |
| 2025 | 14 | 10 |
| 2026 | 10 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for stemming blast holes6 Oct 2026US 12,753,003 B2
- Slide gate closure15 Sep 2026US 12,735,249 B2
- Self-locking folding hopper and a locking method thereof18 Aug 2026US 12,709,460 B2Sandvik AB
- Systems and methods for remotely controlling proppant discharge system7 Jul 2026US 12,673,815 B2Sandbox Enterprises, LLC
- Hopper for a pharmaceutical counter28 Apr 2026US 12,612,243 B2Express Scripts Strategic Development, Inc.
- Temperature control in battery paste application hopper assembly24 Sep 2026US 2026/0285604 A1Wirtz Manufacturing Company, Inc.
- Improvements in handling bulk material feedstocks17 Sep 2026US 2026/0274555 A1
- Silo, stabilisation device and method for stabilisation of charcoal17 Sep 2026US 2026/0274556 A1Vallourec SoluçõEs Tubulares Do Brasil S.A.
- Powder Supply System17 Sep 2026US 2026/0275485 A1Tatsuta Electric Wire & Cable Co., Ltd.
- Hopper for a pharmaceutical counter13 Aug 2026US 2026/0233925 A1Express Scripts Strategic Development, Inc.
Most cited
By later US patents
- Portable mini silo system189US 5,339,996 AMidwest Pre-Mix, Inc. · 1994
- Proppant discharge system and a container for use in such a proppant discharge system178US 8,585,341 B12013
- Transportable material conveying apparatus175US 4,701,095 AHalliburton Company · 1987
- Proppant discharge system and a container for use in such a proppant discharge system153US 8,668,430 B22014
- Method and apparatus for supplying bulk product to an end user152US 7,214,028 B2Boasso America Corporation · 2007