B31B 70/003
Opening or distending bags
Official title: {Opening or distending bags}
B31B70/003 (Opening or distending bags) appears on 33 US grants and 36 published applications in this corpus.
Search patents in B31B- Granted patents
- 33
- Published applications
- 36
- Assignees
- 31
- Inventors
- 89
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 1 | 1 |
| 2016 | 1 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 4 |
| 2020 | 0 | 2 |
| 2021 | 2 | 2 |
| 2022 | 4 | 3 |
| 2023 | 2 | 3 |
| 2024 | 4 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Embossed paper in combination with paper cushioning for shipping envelopes27 Jan 2026US 12,533,871 B2HexcelPack, LLC
- Device and method for opening plastic bag26 Aug 2025US 12,397,952 B2LG Energy Solution, Ltd.
- Bag forming apparatus7 Jan 2025US 12,187,006 B2Ranpak Corp.
- Rectangular-bottomed packaging bag, and method for manufacturing rectangular-bottomed packaging bag1 Oct 2024US 12,103,737 B2Hosokawa Yoko Co., Ltd.
- Bag suitable for packaging horticultural products and a method and means for the production thereof23 Jul 2024US 12,043,472 B2Girnet Internacional, S.L.
- Flap spreading device in square bottom forming device of bag making machine, square bottom forming device in bag making machine, and bag making machine23 Apr 2026US 2026/0109127 A1Newlong Industrial Company Limited
- Embossed paper in combination with paper cushioning for shipping envelopes3 Apr 2025US 2025/0108590 A1HexcelPack, LLC
- Device and method for opening plastic bag15 Aug 2024US 2024/0270424 A1LG Energy Solution, Ltd.
- Device for the mechanical handling of a flexible bag placed in a holder, and logistical parcel sorting installation comprising such a device14 Mar 2024US 2024/0083613 A1Solystic
- Paper cushioned shipping envelopes and methods of making the same1 Feb 2024US 2024/0034039 A1
Most cited
By later US patents
- Film tube gusset forming machine12US 4,578,051 AContainer Corporation of America · 1986
- Apparatus for spreading open flat bags12US 5,279,095 ASIG Schweizerische Industrie-Gesellschaft · 1994
- Method of film crease elimination and patch bag without crease within lay-flat bag side12US 6,296,886 B1Cryovac, Inc. · 2001
- Method of and apparatus for making a bottom of a tubular section for formation of a bag or sack10US 6,042,526 AB + B Maschinenbau GmbH · 2000
- Apparatus for injecting air or gas into a tubular film bubble9US 4,462,779 AWindmoller & Holscher · 1984