B65H 45/20
Zig-zag folders
Official title: Zig-zag folders {(B65H45/228 takes precedence)}
B65H45/20 (Zig-zag folders) appears on 179 US grants and 120 published applications in this corpus.
Search patents in B65H- Granted patents
- 179
- Published applications
- 120
- Assignees
- 114
- Inventors
- 278
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 4 |
| 2005 | 2 | 5 |
| 2006 | 2 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 5 |
| 2009 | 1 | 4 |
| 2010 | 4 | 2 |
| 2011 | 2 | 7 |
| 2012 | 5 | 4 |
| 2013 | 4 | 3 |
| 2014 | 2 | 11 |
| 2015 | 9 | 9 |
| 2016 | 7 | 5 |
| 2017 | 2 | 5 |
| 2018 | 6 | 4 |
| 2019 | 5 | 2 |
| 2020 | 4 | 6 |
| 2021 | 8 | 5 |
| 2022 | 4 | 7 |
| 2023 | 3 | 3 |
| 2024 | 1 | 8 |
| 2025 | 5 | 5 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Machine for producing laminar products made of paper material, in particular packages of napkins, tissues or similar products and related production method14 Apr 2026US 12,600,595 B2Valmet Tissue Converting S.p.A.
- Zig zag folder with perforator and zig zag folded web having perforations10 Mar 2026US 12,570,019 B2C. G. Bretting Manufacturing Co., Inc.
- Stacked cell manufacturing device10 Mar 2026US 12,573,654 B2Kyoto Seisakusho Co., Ltd.
- In-line manufacturing apparatus for lithium metal battery4 Nov 2025US 12,463,239 B2Energy Tech Solution Co., Ltd.
- Folding or interfolding unit for folding or interfolding sheets of paper7 Oct 2025US 12,434,937 B2KöRber Tissue Fold S.R.L.
- Apparatus and method for the energy cell manufacturing industry, in particular the battery cell manufacturing industry, for wrapping a stack8 Oct 2026US 2026/0312111 A1KöRber Technologies GmbH
- Device and method for the energy cell manufacturing industry for forming a stack comprising a plurality of segments and a material web1 Oct 2026US 2026/0302309 A1KöRber Technologies GmbH
- Device for Z-Shaped Folding of a Separator and Method for Producing an Electrode Separator Arrangement11 Jun 2026US 2026/0163048 A1Mercedes-Benz Group AG
- Stacking apparatus for alternately stacking a continuous ribbon-like separator and foil sheets and method for stacking a continuous ribbon-like separator and foil sheets14 May 2026US 2026/0131994 A1G. D S.p.A.
- Bagger with padding expansion15 Jan 2026US 2026/0015143 A1Pregis LLC
Most cited
By later US patents
- Zig-zag web folder apparatus78US 3,991,994 AWood Industries, Inc. · 1976
- Method and apparatus for the manufacture of filters66US 4,798,575 AFlodins Filter AB · 1989
- Filter element for an air filter and a method for the production thereof64US 6,312,489 B1Filterwerk Mann & Hummel GmbH · 2001
- Method of manufacturing a pleated filter material55US 5,389,175 AFilterwerk Mann & Hummel GmbH · 1995
- Method and apparatus for forming gauze pads38US 4,597,748 A1986