B65B 51/20
By fluid pressure acting directly on folds or on opposed surfaces
Official title: by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets (shrinking wrappers by heating B65B53/02)
B65B51/20 (By fluid pressure acting directly on folds or on opposed surfaces) appears on 70 US grants and 40 published applications in this corpus.
Search patents in B65B- Granted patents
- 70
- Published applications
- 40
- Assignees
- 59
- Inventors
- 121
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 5 |
| 2006 | 0 | 2 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 1 |
| 2014 | 1 | 3 |
| 2015 | 0 | 4 |
| 2016 | 2 | 2 |
| 2017 | 2 | 3 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flow stabilized high speed axial fan blower for stretch wrapping machine tail treatment15 Sep 2026US 12,735,219 B2Lantech.com, LLC
- Systems and methods for the application and sealing of end closures on containers4 Mar 2025US 12,240,642 B2Sonoco Development, Inc.
- Continuous decontamination and sterilization device1 Oct 2024US 12,102,727 B2Airex Co., Ltd.
- Sealing supported by pressurized air16 May 2023US 11,649,082 B2Multiv Ac Sepp Haggenmueller SE & Co. KG
- Seal plate assembly28 Jun 2022US 11,370,178 B1
- Air-tight longitudinal sealing seam for thin films16 Jul 2026US 2026/0200614 A1Hochland SE
- Systems and methods for the application and sealing of end closures on containers22 May 2025US 2025/0162752 A1Sonoco Development, Inc.
- Flow stabilized high speed axial fan blower for stretch wrapping machine tail treatment17 Oct 2024US 2024/0343437 A1Lantech.com, LLC
- Downstream tail adherence operation for stretch wrapping machine17 Oct 2024US 2024/0343438 A1Lantech.com, LLC
- Continuous decontamination and sterilization device8 Aug 2024US 2024/0261452 A1Airex Co., Ltd.
Most cited
By later US patents
- Longitudinal seam sealer for polyethylene material89US 6,250,048 B1Triangle Package Machinery Company · 2001
- Apparatus for bag closure and sealing using heated air48US 8,443,578 B2Coating Excellence International LLC · 2013
- Packaging39US 3,958,390 AHayssen Manufacturing Company · 1976
- Method and apparatus for registration of web material in forming filling and sealing industrial bags33US 4,009,551 AThe Dow Chemical Company · 1977
- Process for end sealing a bag and apparatus therefor32US 3,953,272 AWhitehall Machinery Limited · 1976