G03B 27/528
In which the projection optics remain stationary
Official title: {in which the projection optics remain stationary}
G03B27/528 (In which the projection optics remain stationary) appears on 74 US grants and 12 published applications in this corpus.
Search patents in G03B- Granted patents
- 74
- Published applications
- 12
- Assignees
- 30
- Inventors
- 123
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical device2 Sep 2025US 12,405,548 B2Toshiba Tec Kabushiki Kaisha
- Image forming apparatus18 Feb 2025US 12,228,865 B2Canon Kabushiki Kaisha
- Image forming apparatus3 Jan 2023US 11,543,759 B2Canon Kabushiki Kaisha
- Lens unit, exposure device, reading head, image forming apparatus, and image reading apparatus14 Dec 2021US 11,199,650 B2Oki Electric Industry Co., Ltd.
- Image forming apparatus3 Nov 2020US 10,824,088 B2Canon Kabushiki Kaisha
- Optical device4 Dec 2025US 2025/0370366 A1Toshiba Tec Kabushiki Kaisha
- Image forming apparatus8 May 2025US 2025/0147448 A1Canon Kabushiki Kaisha
- Optical device8 Aug 2024US 2024/0264549 A1Toshiba Tec Kabushiki Kaisha
- Image forming apparatus2 Mar 2023US 2023/0069503 A1Canon Kabushiki Kaisha
- Image forming apparatus7 Jan 2021US 2021/0003937 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Compact erect optical imaging copier system and method40US 4,168,900 AMinolta Camera Kabushiki Kaisha · 1979
- Exposure control system for a fixed aperture camera38US 4,972,224 APolaroid Corporation · 1990
- Printer head28US 4,653,895 ASanyo Electric Co., Ltd. · 1987
- Illumination means for use in photocopying machine27US 3,947,106 AMinolta Camera Kabushiki Kaisha · 1976
- Image transmission device for slit scanning type photocopying machine27US 3,977,777 AMinolta Camera Kabushiki Kaisha · 1976