B42F 13/0006
Covers for loose-leaf binders
Official title: {Covers for loose-leaf binders (book covers B42D3/00)}
B42F13/0006 (Covers for loose-leaf binders) appears on 339 US grants and 254 published applications in this corpus.
Search patents in B42F- Granted patents
- 339
- Published applications
- 254
- Assignees
- 138
- Inventors
- 543
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 26 | 0 |
| 2000 | 20 | 0 |
| 2001 | 18 | 5 |
| 2002 | 17 | 19 |
| 2003 | 11 | 19 |
| 2004 | 14 | 19 |
| 2005 | 9 | 21 |
| 2006 | 7 | 11 |
| 2007 | 4 | 22 |
| 2008 | 6 | 11 |
| 2009 | 5 | 13 |
| 2010 | 11 | 6 |
| 2011 | 6 | 14 |
| 2012 | 3 | 14 |
| 2013 | 4 | 14 |
| 2014 | 7 | 12 |
| 2015 | 5 | 10 |
| 2016 | 8 | 8 |
| 2017 | 10 | 6 |
| 2018 | 8 | 7 |
| 2019 | 8 | 4 |
| 2020 | 9 | 9 |
| 2021 | 4 | 4 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 2 | 0 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B42F 13/0066With means for attaching the filing appliance to the cover85
- B42F 13/0053Indexing means on file covers44
- B42F 13/0026With locks or closures40
- B42F 13/0013Made of special materials36
- B42F 13/002With hinges30
- B42F 13/0033With two or more filing appliances24
- B42F 13/004Devices for protecting or reinforcing covers18
- B42F 13/008Slots or openings in covers for rings5
All 9 subgroupsShow fewer
Recent patents
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- File12 Mar 2026US 2026/0070366 A1Kokuyo Co., Ltd.
- Modular Notebook System12 Mar 2026US 2026/0070367 A1VersiFolio, LLC
- Modular notebook system21 Dec 2023US 2023/0406024 A1Rocket Innovations, Inc.
- Magnetic Connector7 Sep 2023US 2023/0279881 A1Wingbinder Limited
- Nstrument component organizer12 Jan 2023US 2023/0011549 A1Agilent Technologies, Inc.
Most cited
By later US patents
- Process for fabricating honeycomb material104US 5,228,936 AHunter Douglas Inc. · 1993
- Casing board including clear overlay defining exterior pocket86US 6,039,494 A2000
- Ring binder72US 5,879,097 AWorld Wide Stationary Company Limited · 1999
- Package and storage container for diskettes70US 4,518,275 ARundel Products, Inc. · 1985
- Apparatus for binding items and method of using same68US 5,289,619 A1994