B65H 2301/453
Opening folded material
Official title: opening folded material
B65H2301/453 (Opening folded material) appears on 50 US grants and 23 published applications in this corpus.
Search patents in B65H- Granted patents
- 50
- Published applications
- 23
- Assignees
- 26
- Inventors
- 72
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image reading apparatus24 Mar 2026US 12,587,604 B2Seiko Epson Corporation
- Sheet processing apparatus, image forming apparatus, and image forming system1 Jul 2025US 12,343,969 B2Ricoh Company, Ltd.
- Image reading apparatus14 May 2024US 11,985,283 B2Seiko Epson Corporation
- Image reading apparatus25 Jul 2023US 11,711,478 B2Seiko Epson Corporation
- Image reading apparatus19 Apr 2022US 11,310,388 B2Seiko Epson Corporation
- Image reading apparatus1 Aug 2024US 2024/0259512 A1Seiko Epson Corporation
- Image reading apparatus5 Oct 2023US 2023/0319210 A1Seiko Epson Corporation
- Sheet processing apparatus, image forming apparatus, and image forming system20 Oct 2022US 2022/0334523 A1Ricoh Company, Ltd.
- Image reading apparatus30 Jun 2022US 2022/0210289 A1Seiko Epson Corporation
- Image reading apparatus18 Mar 2021US 2021/0084186 A1Seiko Epson Corporation
Most cited
By later US patents
- Sheet finisher and image forming system using the same65US 6,905,118 B2Ricoh Company, Ltd. · 2005
- Apparatus and method for individually printing signatures during delivery to a binding line conveyor22US 5,005,815 AR. R. Donnelley & Sons Company · 1991
- Apparatus for gathering folded sheets in bookbinding machines20US 4,085,927 AGrapha-Holding AG · 1978
- Apparatus for opening folded sheets using accelerating and deaccelerating spreader elements19US 4,491,311 AGrapha-Holding AG · 1985
- Sheet material handling apparatus17US 5,100,118 AAM International, Inc. · 1992