B65H 2511/521
Presence of foreign object or undesirable material, i.e. material of another nature
Official title: Presence of foreign object or undesirable material, i.e. material of another nature than the handled material
B65H2511/521 (Presence of foreign object or undesirable material, i.e. material of another nature) appears on 80 US grants and 89 published applications in this corpus.
Search patents in B65H- Granted patents
- 80
- Published applications
- 89
- Assignees
- 29
- Inventors
- 169
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 3 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 3 |
| 2015 | 4 | 3 |
| 2016 | 3 | 4 |
| 2017 | 6 | 7 |
| 2018 | 7 | 3 |
| 2019 | 4 | 5 |
| 2020 | 2 | 11 |
| 2021 | 9 | 8 |
| 2022 | 5 | 9 |
| 2023 | 9 | 5 |
| 2024 | 7 | 6 |
| 2025 | 7 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Medium conveying apparatus to detect predetermined medium based on lift of medium3 Feb 2026US 12,540,048 B2Pfu Limited
- Medium conveying apparatus to detect predetermined medium based on lift of medium21 Oct 2025US 12,448,241 B2Pfu Limited
- Method and system for splicing two sheets of material containing alkaloids23 Sep 2025US 12,419,338 B2Philip Morris Products S. A.
- Image forming apparatus19 Aug 2025US 12,391,499 B2KYOCERA Document Solutions Inc.
- Printing apparatus and printing method12 Aug 2025US 12,384,168 B2Canon Kabushiki Kaisha
- Conveyance device and reading apparatus30 Apr 2026US 2026/0116686 A1Seiko Epson Corporation
- Medium transaction device and control method23 Apr 2026US 2026/0109561 A1Oki Electric Industry Co., Ltd.
- Printing apparatus and printing method26 Feb 2026US 2026/0054505 A1Canon Kabushiki Kaisha
- Printing apparatus and printing method6 Nov 2025US 2025/0340071 A1Canon Kabushiki Kaisha
- Automatic document feeder and image forming apparatus28 Aug 2025US 2025/0270066 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Liquid ink printer transport belt cleaner27US 5,526,028 AXerox Corporation · 1996
- Sheet handling machine with thickness detection of multiple parts of sheet10US 6,796,434 B2Hitachi, Ltd. · 2004
- Document processing system with mechanism for detecting staples, paper clips, and like foreign items6US 7,556,265 B1Unisys Corporation · 2009
- Sheet feeding apparatus and image forming apparatus6US 8,297,613 B2Canon Kabushiki Kaisha · 2012
- System and method for metallic object detection in a media transport system6US 9,938,100 B2Kodak Alaris Inc. · 2018