B65H 2515/81
Rigidity
Official title: Rigidity; Stiffness; Elasticity
B65H2515/81 (Rigidity) appears on 127 US grants and 151 published applications in this corpus.
Search patents in B65H- Granted patents
- 127
- Published applications
- 151
- Assignees
- 58
- Inventors
- 334
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 3 |
| 2004 | 4 | 8 |
| 2005 | 2 | 4 |
| 2006 | 3 | 3 |
| 2007 | 3 | 2 |
| 2008 | 5 | 4 |
| 2009 | 0 | 3 |
| 2010 | 2 | 4 |
| 2011 | 4 | 6 |
| 2012 | 7 | 7 |
| 2013 | 6 | 7 |
| 2014 | 8 | 11 |
| 2015 | 7 | 10 |
| 2016 | 7 | 10 |
| 2017 | 10 | 5 |
| 2018 | 6 | 7 |
| 2019 | 7 | 9 |
| 2020 | 6 | 6 |
| 2021 | 5 | 5 |
| 2022 | 5 | 9 |
| 2023 | 6 | 12 |
| 2024 | 5 | 7 |
| 2025 | 11 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sheet characteristic detection device and image forming system28 Jul 2026US 12,692,118 B2Konica Minolta, Inc.
- Model reference adaptive web and winding control17 Feb 2026US 12,552,627 B2BW Converting, Inc.
- Sheet processing device11 Nov 2025US 12,466,682 B2Toshiba Tec Kabushiki Kaisha
- Feeding cassette and recording device4 Nov 2025US 12,459,763 B2Seiko Epson Corporation
- Paper feed device, image formation system, and control program for paper feed device19 Aug 2025US 12,391,501 B2Konica Minolta, Inc.
- Image forming apparatus11 Jun 2026US 2026/0158805 A1KYOCERA Document Solutions Inc.
- Conveyance device and image forming system28 May 2026US 2026/0145896 A1Konica Minolta, Inc.
- Printing apparatus and printing method26 Feb 2026US 2026/0054505 A1Canon Kabushiki Kaisha
- Sheet aligning device and image forming system4 Dec 2025US 2025/0367945 A1KYOCERA Document Solutions Inc.
- Printing apparatus and printing method6 Nov 2025US 2025/0340071 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Sheet feeder having improved sheet separation regardless of rigidity and size of sheet31US 5,857,671 ABrother Kogyo Kabushiki Kaisha · 1999
- Sheet feeder for feeding sheets of different rigidity24US 6,158,733 ABrother Kogyo Kabushiki Kaisha · 2000
- Sheet conveying apparatus, printing apparatus, and processing apparatus23US 8,807,556 B2Canon Kabushiki Kaisha · 2014
- Regulating vacuum hold of media in a printer22US 6,254,081 B1Hewlett-Packard Company · 2001
- Print media weight detection system15US 6,028,318 AHewlett-Packard Company · 2000