B43M 5/00
Devices for closing envelopes
B43M5/00 (Devices for closing envelopes) appears on 373 US grants and 186 published applications in this corpus.
Search patents in B43M- Granted patents
- 373
- Published applications
- 186
- Assignees
- 117
- Inventors
- 510
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 15 | 0 |
| 1991 | 15 | 0 |
| 1992 | 17 | 0 |
| 1993 | 14 | 0 |
| 1994 | 13 | 0 |
| 1995 | 7 | 0 |
| 1996 | 17 | 0 |
| 1997 | 16 | 0 |
| 1998 | 13 | 0 |
| 1999 | 22 | 0 |
| 2000 | 12 | 0 |
| 2001 | 15 | 3 |
| 2002 | 14 | 14 |
| 2003 | 11 | 20 |
| 2004 | 14 | 12 |
| 2005 | 9 | 9 |
| 2006 | 10 | 11 |
| 2007 | 5 | 10 |
| 2008 | 6 | 14 |
| 2009 | 2 | 11 |
| 2010 | 5 | 7 |
| 2011 | 8 | 11 |
| 2012 | 9 | 6 |
| 2013 | 7 | 9 |
| 2014 | 2 | 6 |
| 2015 | 5 | 5 |
| 2016 | 6 | 6 |
| 2017 | 8 | 1 |
| 2018 | 2 | 5 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 2 | 3 |
| 2022 | 2 | 5 |
| 2023 | 0 | 8 |
| 2024 | 7 | 5 |
| 2025 | 10 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stations for forming heat seals in envelopes21 Apr 2026US 12,605,959 B2Pregis LLC
- Paper folding device9 Dec 2025US 12,492,096 B2Duplo Seiko Corporation
- Envelope processing apparatus and image forming system26 Aug 2025US 12,397,580 B2Ricoh Company, Ltd.
- Enclosing device, enclosing-sealing apparatus, and image forming system29 Jul 2025US 12,372,911 B2Ricoh Company, Ltd.
- Integrated envelope sealer and flip module15 Jul 2025US 12,358,319 B2DMT Solutions Global Corporation
- Multimodal envelope sealer7 May 2026US 2026/0124851 A1Pregis LLC
- Integrated envelope sealer and flip module12 Feb 2026US 2026/0042314 A1DMT Solutions Global Corporation
- Stations for forming heat seals in envelopes29 May 2025US 2025/0170851 A1Pregis LLC
- Enclosing device, enclosing-and-sealing apparatus, and image forming system17 Apr 2025US 2025/0121626 A1Ricoh Company, Ltd.
- Paper folding device19 Sep 2024US 2024/0308812 A1Duplo Seiko Corporation
Most cited
By later US patents
- Mechanism and method of making an envelope53US 4,071,997 AGunther Business Systems, Inc. · 1978
- Multiple envelope with integrally formed and printed contents and return envelope53US 5,640,835 A1997
- Method of in-line addressing for modular folder inserters43US 5,818,724 APitney Bowes Inc. · 1998
- Recirculating folder for direct mail application33US 4,900,391 AXerox Corporation · 1990
- One-piece mailer and apparatus for folding same31US 4,951,864 ATranskrit Corporation · 1990