G03B 27/727
Optical projection devices wherein the contrast is controlled optically
Official title: {Optical projection devices wherein the contrast is controlled optically (e.g. uniform exposure, two colour exposure on variable contrast sensitive material)}
G03B27/727 (Optical projection devices wherein the contrast is controlled optically) appears on 36 US grants and 10 published applications in this corpus.
Search patents in G03B- Granted patents
- 36
- Published applications
- 10
- Assignees
- 17
- Inventors
- 59
- Latest grant
- 1 Sep 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 2 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Apparatus and method for enlarging digital photographs on photographic paper19 Mar 2020US 2020/0092428 A1Charles Beseler Company
- Uniformity correction system having light leak and shadow compensation12 Jun 2008US 2008/0137217 A1ASML Holding N. V.
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Most cited
By later US patents
- Apparatus and method for enhancement of image viewing by modulated illumination of a transparency62US 4,908,876 ADigivision, Inc. · 1990
- Print processing method, printing order receiving machine and print processing device52US 6,900,882 B2Fuji Photo Film Co., Ltd. · 2005
- Camera method and apparatus for recording with selected contrast25US 4,272,186 APolaroid Corporation · 1981
- Split image exposure method14US 5,801,814 AFuji Photo Film Co., Ltd. · 1998
- Photographic copier with masking device and copying method12US 5,155,524 AAgfa-Gevaert · 1992