B65D 2581/3437
Specially adapted to be heated by microwaves
Official title: specially adapted to be heated by microwaves
B65D2581/3437 (Specially adapted to be heated by microwaves) appears on 824 US grants and 536 published applications in this corpus.
Search patents in B65D- Granted patents
- 824
- Published applications
- 536
- Assignees
- 284
- Inventors
- 1,224
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 13 | 0 |
| 1988 | 13 | 0 |
| 1989 | 45 | 0 |
| 1990 | 52 | 0 |
| 1991 | 38 | 0 |
| 1992 | 40 | 0 |
| 1993 | 49 | 0 |
| 1994 | 42 | 0 |
| 1995 | 28 | 0 |
| 1996 | 25 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 21 | 0 |
| 2000 | 24 | 0 |
| 2001 | 21 | 7 |
| 2002 | 20 | 14 |
| 2003 | 13 | 29 |
| 2004 | 15 | 23 |
| 2005 | 12 | 27 |
| 2006 | 12 | 31 |
| 2007 | 5 | 48 |
| 2008 | 11 | 31 |
| 2009 | 10 | 40 |
| 2010 | 13 | 28 |
| 2011 | 22 | 25 |
| 2012 | 17 | 27 |
| 2013 | 22 | 20 |
| 2014 | 25 | 24 |
| 2015 | 17 | 12 |
| 2016 | 12 | 23 |
| 2017 | 15 | 16 |
| 2018 | 12 | 19 |
| 2019 | 17 | 13 |
| 2020 | 11 | 12 |
| 2021 | 14 | 15 |
| 2022 | 10 | 16 |
| 2023 | 6 | 12 |
| 2024 | 7 | 8 |
| 2025 | 12 | 8 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B65D 2581/3486Dielectric characteristics of microwave reactive packagingIndexing code678
- B65D 2581/3439Means for affecting the heating or cooking propertiesIndexing code471
- B65D 2581/3471Microwave reactive substances present in the packaging materialIndexing code460
- B65D 2581/3463Means for applying microwave reactive material to the packageIndexing code228
Recent patents
- Pressure relief container for food to be heated and box having said container29 Sep 2026US 12,747,082 B2South Plastic Industry Co., Ltd.
- 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.
- Microwave heatable film, microwave heatable package, and method for producing microwave heatable film8 Oct 2026US 2026/0307883 A1Ricoh Company, Ltd.
- 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
- Food container30 Jul 2026US 2026/0217411 A1
- Carton and Method of Using Same25 Jun 2026US 2026/0176015 A1Inno-Pak, LLC
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