G01J 1/50
Using change in colour of an indicator
Official title: using change in colour of an indicator, e.g. actinometer
G01J1/50 (Using change in colour of an indicator) appears on 126 US grants and 121 published applications in this corpus.
Search patents in G01J- Granted patents
- 126
- Published applications
- 121
- Assignees
- 117
- Inventors
- 345
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 2 |
| 2003 | 5 | 4 |
| 2004 | 4 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 5 |
| 2007 | 2 | 5 |
| 2008 | 0 | 6 |
| 2009 | 5 | 7 |
| 2010 | 3 | 4 |
| 2011 | 2 | 6 |
| 2012 | 7 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 2 | 5 |
| 2016 | 2 | 3 |
| 2017 | 6 | 6 |
| 2018 | 4 | 4 |
| 2019 | 6 | 6 |
| 2020 | 3 | 6 |
| 2021 | 6 | 10 |
| 2022 | 3 | 7 |
| 2023 | 7 | 10 |
| 2024 | 5 | 7 |
| 2025 | 9 | 5 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for separately dispensing materials for use together on human skin16 Jun 2026US 12,653,294 B2SunFly Brands, Inc.
- Inspection tool and inspection method28 Apr 2026US 12,613,133 B2FUJIFILM Corporation
- Ultraviolet inspection tool, ultraviolet inspection kit, and ultraviolet inspection method3 Feb 2026US 12,540,848 B2FUJFILM Corporation
- Patch sheet for skin, method for using same, ultraviolet sensing method, and method for evaluating ultraviolet protection performance25 Nov 2025US 12,478,563 B2Kao Corporation
- Ultraviolet inspection tool and inspection method using a visual indicator7 Oct 2025US 12,436,096 B2FUJIFILM Corporation
- Self-healing photochromic elastomer compositions for wearable ultraviolet-sensors6 Aug 2026US 2026/0227236 A1The Regents of the University of Michigan
- Stable uv indicator4 Sep 2025US 2025/0277748 A1Intellego Technologies AB
- Par sunlight exposure indicator for optimal plant placement7 Aug 2025US 2025/0251279 A1
- Media construction to facilitate use of activatable platform20 Mar 2025US 2025/0091376 A1Temptime Corporation
- Calibration member, energy measurement apparatus, energy measuring method, and energy measurement program27 Feb 2025US 2025/0069268 A1FUJIFILM Corporation
Most cited
By later US patents
- Photochromic ultraviolet detector125US 5,581,090 ASolartech Enterprises, LLC · 1996
- Integrating ultraviolet exposure detection devices107US 6,046,455 ASegan Industries, Inc. · 2000
- System for the visualization of exposure to ultraviolet radiation103US 5,028,792 AXytronyx, Inc. · 1991
- Disposable dosimeter for sun radiation86US 6,132,681 ASkyrad Ltd. · 2000
- Use of test strips to determine the UV intensity or to pre-determine the duration of stay in the sun without sunburn85US 5,589,398 ABoehringer Mannheim GmbH · 1996