B65D 81/3461
Flexible containers
Official title: {Flexible containers, e.g. bags, pouches, envelopes}
B65D81/3461 (Flexible containers) appears on 392 US grants and 446 published applications in this corpus.
Search patents in B65D- Granted patents
- 392
- Published applications
- 446
- Assignees
- 234
- Inventors
- 835
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 19 | 0 |
| 1990 | 16 | 0 |
| 1991 | 14 | 0 |
| 1992 | 7 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 16 | 0 |
| 2000 | 14 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 7 |
| 2003 | 5 | 12 |
| 2004 | 2 | 13 |
| 2005 | 7 | 23 |
| 2006 | 9 | 25 |
| 2007 | 5 | 28 |
| 2008 | 9 | 22 |
| 2009 | 7 | 23 |
| 2010 | 8 | 24 |
| 2011 | 8 | 15 |
| 2012 | 11 | 24 |
| 2013 | 14 | 17 |
| 2014 | 13 | 20 |
| 2015 | 12 | 13 |
| 2016 | 12 | 16 |
| 2017 | 11 | 18 |
| 2018 | 6 | 17 |
| 2019 | 11 | 22 |
| 2020 | 12 | 19 |
| 2021 | 10 | 22 |
| 2022 | 11 | 20 |
| 2023 | 10 | 14 |
| 2024 | 3 | 12 |
| 2025 | 14 | 12 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid oil-based fat system composition for microwave popcorn22 Sep 2026US 12,740,579 B2ConAgra Foods RDM, Inc.
- Liquid oil-based fat system composition for microwave popcorn18 Aug 2026US 12,708,126 B2ConAgra Foods RDM, Inc.
- Closing device for a container9 Jun 2026US 12,649,614 B2
- Cocoa food preparation product suitable to prepare a hot chocolate drink and process thereof21 Apr 2026US 12,604,915 B2Juice Garage, S.L.
- Packaging bag, sealing bar, and production method for packaging bag10 Mar 2026US 12,570,453 B2Kyoraku Co., Ltd.
- Microwave heatable film, microwave heatable package, and method for producing microwave heatable film8 Oct 2026US 2026/0307883 A1Ricoh Company, Ltd.
- On The Go Bag24 Sep 2026US 2026/0285575 A1
- Microwave heating film and method for manufacturing microwave heating film24 Sep 2026US 2026/0285576 A1
- One-way valve for a food package23 Jul 2026US 2026/0208936 A1Micvac AB
- Clamp for Sealing Bag Bodies for Heating14 May 2026US 2026/0131944 A1Dongguan He Xin Packing Co., Ltd.
Most cited
By later US patents
- Insulating microwave interactive packaging250US 7,019,271 B2Graphic Packaging International, Inc. · 2006
- Packaged food item and method for achieving microwave browning thereof228US 4,267,420 AGeneral Mills, Inc. · 1981
- Flexible disposable material for forming a food container for microwave cooking219US 4,890,439 AJames River Corporation · 1990
- Sleeve for crisping and browning of foods in a microwave oven and package and method utilizing same190US 4,775,771 AJames River Corporation · 1988
- Flat-faced package for improving the microwave popping of corn154US 5,044,777 AGolden Valley Microwave Foods Inc. · 1991