G01J 1/4209
Photoelectric exposure meters for determining the exposure time in recording or reproducing
Official title: {Photoelectric exposure meters for determining the exposure time in recording or reproducing}
G01J1/4209 (Photoelectric exposure meters for determining the exposure time in recording or reproducing) appears on 113 US grants and 61 published applications in this corpus.
Search patents in G01J- Granted patents
- 113
- Published applications
- 61
- Assignees
- 66
- Inventors
- 199
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 2 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 4 |
| 2009 | 2 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 3 | 1 |
| 2014 | 1 | 3 |
| 2015 | 3 | 3 |
| 2016 | 2 | 7 |
| 2017 | 6 | 7 |
| 2018 | 2 | 6 |
| 2019 | 6 | 4 |
| 2020 | 4 | 5 |
| 2021 | 2 | 5 |
| 2022 | 5 | 0 |
| 2023 | 3 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Medical device adaptive control for hostile environment28 Jul 2026US 12,691,220 B2CareFusion 303, Inc.
- Means and process for creating works having the characteristic look and feel of films generated via the Technicolor® process19 Nov 2024US 12,147,148 B2
- System and devices for measuring light sources and methods of use thereof26 Dec 2023US 11,850,109 B2BlueLight Analytics, Inc.
- Medical device adaptive control for hostile environment26 Dec 2023US 11,850,397 B2CareFusion 303, Inc.
- Imaging apparatus, imaging method, and program31 Jan 2023US 11,570,371 B2Sony Group Corporation
- Determining ambient light levels8 Oct 2026US 2026/0309543 A1Mobileye Vision Technologies Ltd.
- Medical device adaptive control for hostile environment23 Jan 2025US 2025/0025630 A1CareFusion 303, Inc.
- Medical device adaptive control for hostile environment18 Apr 2024US 2024/0123145 A1CareFusion 303, Inc.
- Device and method for simply determining maximum permissible exposure time of retina18 Nov 2021US 2021/0353137 A1National Tsing Hua University
- Light detection system, discharge probability calculating method, and received light quantity measuring method19 Aug 2021US 2021/0255035 A1Azbil Corporation
Most cited
By later US patents
- Light receiving device for photoelectric conversion element65US 4,055,761 ANippon Kogaku K. K. · 1977
- Method of classifying color originals and apparatus thereof50US 4,830,501 AFuji Photo Film Co., Ltd. · 1989
- Non-linear flash and lightning detection device50US 6,625,399 B12003
- Automatic hand-held photographic light meters41US 4,636,052 AMinolta Camera Kabushiki Kaisha · 1987
- light metering device with detector matrix and mean value detection38US 4,929,824 AFuji Photo Film Co., Ltd. · 1990