B31B 70/644
Making seals parallel to the direction of movement, i.e. longitudinal sealing
Official title: {Making seals parallel to the direction of movement, i.e. longitudinal sealing}
B31B70/644 (Making seals parallel to the direction of movement, i.e. longitudinal sealing) appears on 66 US grants and 102 published applications in this corpus.
Search patents in B31B- Granted patents
- 66
- Published applications
- 102
- Assignees
- 48
- Inventors
- 145
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 1 | 2 |
| 2014 | 2 | 3 |
| 2015 | 0 | 1 |
| 2016 | 2 | 4 |
| 2017 | 2 | 13 |
| 2018 | 2 | 7 |
| 2019 | 2 | 3 |
| 2020 | 3 | 7 |
| 2021 | 4 | 5 |
| 2022 | 6 | 9 |
| 2023 | 4 | 11 |
| 2024 | 13 | 9 |
| 2025 | 6 | 7 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Method of making flat bottom plastic bag55US 4,526,565 ALinear Films, Inc. · 1985
- Sealing machine for glue-coated material in sheets27US 4,826,475 A1989
- Apparatus for sealing a hem in a moving web of film24US 4,721,502 AMobil Oil Corporation · 1988
- Plastic bag making apparatus23US 8,579,780 B2Totani Corporation · 2013
- Method for the production of bags20US 7,837,606 B2Windoeller & Hoelscher · 2010