B65D 2581/3486
Dielectric characteristics of microwave reactive packaging
B65D2581/3486 (Dielectric characteristics of microwave reactive packaging) appears on 678 US grants and 395 published applications in this corpus.
Search patents in B65D- Granted patents
- 678
- Published applications
- 395
- Assignees
- 204
- Inventors
- 925
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 11 | 0 |
| 1989 | 40 | 0 |
| 1990 | 47 | 0 |
| 1991 | 34 | 0 |
| 1992 | 33 | 0 |
| 1993 | 42 | 0 |
| 1994 | 35 | 0 |
| 1995 | 22 | 0 |
| 1996 | 20 | 0 |
| 1997 | 11 | 0 |
| 1998 | 19 | 0 |
| 1999 | 21 | 0 |
| 2000 | 20 | 0 |
| 2001 | 15 | 5 |
| 2002 | 14 | 10 |
| 2003 | 7 | 25 |
| 2004 | 13 | 18 |
| 2005 | 10 | 20 |
| 2006 | 9 | 27 |
| 2007 | 5 | 40 |
| 2008 | 11 | 27 |
| 2009 | 9 | 31 |
| 2010 | 9 | 21 |
| 2011 | 20 | 22 |
| 2012 | 13 | 21 |
| 2013 | 20 | 12 |
| 2014 | 22 | 18 |
| 2015 | 12 | 8 |
| 2016 | 8 | 13 |
| 2017 | 13 | 10 |
| 2018 | 8 | 9 |
| 2019 | 11 | 7 |
| 2020 | 6 | 8 |
| 2021 | 11 | 14 |
| 2022 | 7 | 8 |
| 2023 | 3 | 7 |
| 2024 | 5 | 5 |
| 2025 | 9 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Container with liner8 Sep 2026US 12,729,035 B2Graphic Packaging International, Inc.
- Blanks, constructs, and associated methods for induction heating of food products3 Feb 2026US 12,540,023 B2Graphic Packaging International, Inc.
- Packaging bag27 Jan 2026US 12,534,280 B2Kyoraku Co., Ltd.
- Microwave popcorn bag4 Nov 2025US 12,459,722 B2ConAgra Foods RDM, Inc.
- Susceptor ink compositions for microwaveable packages14 Oct 2025US 12,441,903 B2Instituto TecnolóGico Del Embalaje, Transporte Y LogíStica (Itene)
- Microwave heating film and method for manufacturing microwave heating film24 Sep 2026US 2026/0285576 A1
- Microwave-induced exothermic composition, microwave-induced exothermic layer, microwave-induced exothermic film, microwave-induced exothermic package, and method for producing microwave-induced exothermic film13 Aug 2026US 2026/0233921 A1
- Tray with compartments21 May 2026US 2026/0138807 A1Graphic Packaging International, Inc.
- Microwave popcorn bag9 Apr 2026US 2026/0097893 A1ConAgra Foods RDM, Inc.
- Convertible container30 Oct 2025US 2025/0333233 A1SFC Global Supply Chain, Inc.
Most cited
By later US patents
- Gas permeable microwave reactive package470US 4,896,009 AJames River Corporation · 1990
- Microwave heating package and method297US 4,190,757 AThe Pillsbury Company · 1980
- Patterned metal foil laminate and method for making same274US 5,800,724 AFort James Corporation · 1998
- 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