B31B 70/004
Closing bags
Official title: {Closing bags}
B31B70/004 (Closing bags) appears on 44 US grants and 50 published applications in this corpus.
Search patents in B31B- Granted patents
- 44
- Published applications
- 50
- Assignees
- 42
- Inventors
- 83
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 4 |
| 2012 | 2 | 5 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 2 |
| 2016 | 3 | 3 |
| 2017 | 2 | 3 |
| 2018 | 2 | 3 |
| 2019 | 1 | 1 |
| 2020 | 3 | 1 |
| 2021 | 0 | 4 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 4 | 2 |
| 2025 | 3 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sealed bag based on folding process and processing method thereof25 Nov 2025US 12,479,182 B1Dongguan He Xin Packing Co., Ltd.
- Packaging bag as well as method for production18 Mar 2025US 12,252,300 B2Mondi AG
- Bag making apparatus, bag making method and bag18 Feb 2025US 12,226,975 B2Totani Corporation
- Bag making apparatus and bag making method1 Oct 2024US 12,103,263 B2Totani Corporation
- Method for manufacturing sheet material container4 Jun 2024US 11,999,126 B2Kao Corporation
- Apparatuses and method for preparing a paper bag26 Mar 2026US 2026/0084848 A1Dowson Food Machinery Limited
- Sealed bag based on folding process and processing method thereof4 Dec 2025US 2025/0367898 A1Dongguan He Xin Packing Co., Ltd.
- Paper package and a method for making a paper package2 Jan 2025US 2025/0002220 A1Creamill Oy
- Methods and apparatus for forming, filling and sealing film containers4 Jul 2024US 2024/0217688 A1Douglas Machine Inc.
- Bag making apparatus and bag making method18 Jan 2024US 2024/0017514 A1Totani Corporation
Most cited
By later US patents
- Method for sealing a container147US 4,338,765 AHonshu Paper Co., Ltd. · 1982
- Sealed bags of plastic materials61US 4,373,979 AWorkman Bag Company Ltd. · 1983
- Process for manufacturing side fold sacks made of plastic film51US 6,800,051 B2Windomeller & Hoelscher · 2004
- Apparatus for bag closure and sealing using heated air48US 8,443,578 B2Coating Excellence International LLC · 2013
- Closure bag with internal tack surfaces42US 6,156,363 AFirst Brands Corporation · 2000