B31F 5/02
Attaching together sheets, strips or webs: by crimping or slotting or perforating
Official title: by crimping or slotting {or perforating}
B31F5/02 (Attaching together sheets, strips or webs: by crimping or slotting or perforating) appears on 182 US grants and 185 published applications in this corpus.
Search patents in B31F- Granted patents
- 182
- Published applications
- 185
- Assignees
- 53
- Inventors
- 285
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 7 |
| 2014 | 4 | 11 |
| 2015 | 7 | 17 |
| 2016 | 12 | 11 |
| 2017 | 9 | 19 |
| 2018 | 21 | 25 |
| 2019 | 21 | 14 |
| 2020 | 15 | 12 |
| 2021 | 15 | 5 |
| 2022 | 5 | 6 |
| 2023 | 6 | 11 |
| 2024 | 8 | 11 |
| 2025 | 10 | 8 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Medium processing apparatus and image forming system incorporating same19 May 2026US 12,630,385 B2Ricoh Company, Ltd.
- Apparatus and method for production of a two-ply paperboard panel5 May 2026US 12,617,175 B2Star Board Materials, LLC
- Recording medium processing apparatus and image forming system21 Apr 2026US 12,606,407 B2FUJIFILM Business Innovation Corp.
- Thickness detection device, sheet processing apparatus, and image forming system7 Apr 2026US 12,596,322 B2Ricoh Company, Ltd.
- Medium processing apparatus and image forming system incorporating same20 Jan 2026US 12,528,266 B2Ricoh Company, Ltd.
- Medium processing apparatus and image forming system6 Aug 2026US 2026/0227736 A1Ricoh Company, Ltd.
- Medium processing apparatus and image forming system18 Jun 2026US 2026/0169404 A1Ricoh Company, Ltd.
- Binding device23 Apr 2026US 2026/0109129 A1Etria Co., Ltd.
- Medium processing apparatus and image forming system incorporating same23 Apr 2026US 2026/0109566 A1Ricoh Company, Ltd.
- Binding processing device and image forming system26 Mar 2026US 2026/0084455 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Wet-resilient webs and disposable articles made therewith135US 6,436,234 B1Kimberly-Clark Worldwide, Inc. · 2002
- Stitching gear assembly having perforating projections thereon, for use in converter adapted to produce pad-like cushioning material, and method111US 4,968,291 ARanpak Corp. · 1990
- Lamination anchoring method and product thereof83US 4,770,920 APaper-Pak Products, Inc. · 1988
- Method and apparatus for pinch perforating multiply web material66US 5,755,654 AJames River Corporation of Virginia · 1998
- Wet-resilient webs and disposable articles made therewith54US 6,808,790 B2Kimberly-Clark Worldwide, Inc. · 2004