B42F 9/00
Filing appliances with devices clamping file edges
Official title: Filing appliances with devices clamping file edges; Covers with clamping backs (B42F13/00, B42F17/00 take precedence)
B42F9/00 (Filing appliances with devices clamping file edges) appears on 249 US grants and 198 published applications in this corpus.
Search patents in B42F- Granted patents
- 249
- Published applications
- 198
- Assignees
- 96
- Inventors
- 434
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 12 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 10 |
| 2003 | 6 | 7 |
| 2004 | 3 | 7 |
| 2005 | 8 | 5 |
| 2006 | 6 | 16 |
| 2007 | 4 | 10 |
| 2008 | 5 | 14 |
| 2009 | 4 | 9 |
| 2010 | 8 | 9 |
| 2011 | 5 | 6 |
| 2012 | 3 | 6 |
| 2013 | 5 | 4 |
| 2014 | 4 | 16 |
| 2015 | 3 | 15 |
| 2016 | 10 | 7 |
| 2017 | 8 | 6 |
| 2018 | 6 | 6 |
| 2019 | 3 | 4 |
| 2020 | 5 | 8 |
| 2021 | 3 | 5 |
| 2022 | 5 | 4 |
| 2023 | 9 | 8 |
| 2024 | 6 | 7 |
| 2025 | 4 | 6 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Clamping device for a plurality of sheets of paper30 Jul 2026US 2026/0217051 A1Bi-Silque, S.A.
- Portable Clipboard System and Method of Use25 Jun 2026US 2026/0175612 A1
- Foldable clipboard25 Dec 2025US 2025/0388040 A1
- Foldable clipboard2 Oct 2025US 2025/0303777 A1
- Modular Notebook System31 Jul 2025US 2025/0242630 A1
Most cited
By later US patents
- Document holder assembly65US 4,243,249 A1981
- Annular support device with pivotal segments52US 5,110,315 A1992
- Paper pad construction and clip means therefor47US 5,112,083 AAll-State Legal Supply Co. · 1992
- Clip board desk and stand44US 4,645,163 A1987
- Device for joining consolidated lamellar material40US 4,147,257 AHerbert Zippel GmbH & Co. · 1979