B65H 2553/44
Involving light guide
Official title: Involving light guide, e.g. optical fibres
B65H2553/44 (Involving light guide) appears on 45 US grants and 42 published applications in this corpus.
Search patents in B65H- Granted patents
- 45
- Published applications
- 42
- Assignees
- 43
- Inventors
- 112
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 0 |
| 2008 | 1 | 6 |
| 2009 | 0 | 1 |
| 2010 | 3 | 0 |
| 2011 | 1 | 5 |
| 2012 | 1 | 3 |
| 2013 | 4 | 4 |
| 2014 | 6 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 3 | 3 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sheet stacking equipment23 Dec 2025US 12,503,330 B2Tecnau S.r.l.
- Medium conveying apparatus in which reflectivity in periphery of opening for guiding light is equal to or less than predetermined ratio26 Sep 2023US 11,767,188 B2Pfu Limited
- Light detection sensor, light detection device, sheet processing device, and light detection method23 May 2023US 11,656,183 B2Glory Ltd.
- Medium conveying apparatus including light guide which is bent11 Apr 2023US 11,623,831 B2Pfu Limited
- Multi-sheet handling for document digitization24 May 2022US 11,339,019 B2Ripcord Inc.
- Sheet stacking equipment22 Dec 2022US 2022/0402720 A1Tecnau S.r.l.
- Medium conveying apparatus in which reflectivity in periphery of opening for guiding light is equal to or less than predetermined ratio2 Jun 2022US 2022/0169464 A1Pfu Limited
- Medium conveying apparatus including light guide which is bent2 Jun 2022US 2022/0169465 A1Pfu Limited
- Light detection sensor, light detection device, sheet processing device, and light detection method21 Jan 2021US 2021/0018444 A1Glory Ltd.
- Multi-sheet handling for document digitization12 Mar 2020US 2020/0079608 A1Ripcord Inc.
Most cited
By later US patents
- Device for detecting the edge location of an object28US 5,006,719 AHeidelberger Druckmaschinen AG · 1991
- Cassette for banknotes26US 4,337,393 ADe La Rue Systems Limited · 1982
- Document sensor for currency recycling automated banking machine24US 6,241,244 B1Diebold, Incorporated · 2001
- Configuration for detecting mail items15US 6,456,776 B2Francotyp-Postalia GmbH · 2002
- Media detector employing light guides and reflectors to direct a light beam across the transport path which is interrupted by the presence of the media13US 5,585,645 AOki Electric Industry Co., Ltd. · 1996