B31B 70/266
Involving gusset-forming
Official title: {involving gusset-forming}
B31B70/266 (Involving gusset-forming) appears on 196 US grants and 189 published applications in this corpus.
Search patents in B31B- Granted patents
- 196
- Published applications
- 189
- Assignees
- 114
- Inventors
- 267
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 4 |
| 2002 | 13 | 11 |
| 2003 | 7 | 8 |
| 2004 | 5 | 8 |
| 2005 | 4 | 7 |
| 2006 | 5 | 8 |
| 2007 | 1 | 8 |
| 2008 | 1 | 5 |
| 2009 | 3 | 7 |
| 2010 | 6 | 10 |
| 2011 | 3 | 8 |
| 2012 | 6 | 5 |
| 2013 | 3 | 2 |
| 2014 | 4 | 6 |
| 2015 | 2 | 8 |
| 2016 | 3 | 12 |
| 2017 | 6 | 15 |
| 2018 | 7 | 10 |
| 2019 | 9 | 9 |
| 2020 | 7 | 4 |
| 2021 | 10 | 5 |
| 2022 | 7 | 5 |
| 2023 | 6 | 9 |
| 2024 | 5 | 7 |
| 2025 | 8 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and machine for manufacturing a flexible envelope-like bag, particularly with reinforcement29 Sep 2026US 12,747,068 B2Holweg Group
- Flexible bag having a convertible bottom, method and machine for manufacturing same25 Aug 2026US 12,715,657 B2Holweg Group
- Sealed bag based on folding process and processing method thereof25 Nov 2025US 12,479,182 B1Dongguan He Xin Packing Co., Ltd.
- Zipper tape-equipped bag body, article housing method for zipper tape-equipped bag body, manufacturing method for zipper tape-equipped bag body, and manufacturing device for zipper tape-equipped bag body18 Nov 2025US 12,472,718 B2Idemitsu Unitech Co., Ltd.
- Four side seal packaging bag and preparation device and method thereof16 Sep 2025US 12,415,328 B2Shanghai Zhoutai Light Industry Machinery Manufacturing Co., Ltd.
- Machine and method for forming bags of flexible material24 Sep 2026US 2026/0284999 A1Ilapak Italia S.P.A.
- 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
- Gusset bags with tear strips8 Jan 2026US 2026/0008594 A1Illinois Tool Works Inc.
- Sealed bag based on folding process and processing method thereof4 Dec 2025US 2025/0367898 A1Dongguan He Xin Packing Co., Ltd.
- Envelope and release cover formed from common substrate25 Sep 2025US 2025/0296740 A1Pregis LLC
Most cited
By later US patents
- Flat sleeve convertible to a decorative container91US 6,182,395 B2Southpac Trust International, Inc. · 2001
- Sealed bags of plastic materials61US 4,373,979 AWorkman Bag Company Ltd. · 1983
- Method of making flat bottom plastic bag55US 4,526,565 ALinear Films, Inc. · 1985
- Bag and method of making the same51US 5,814,382 AAmerican Packaging Corporation · 1998
- Method and apparatus for making printed gusset bags46US 4,262,581 AKCL Corporation · 1981