A47L 9/2815
Using optical detectors
Official title: {using optical detectors}
A47L9/2815 (Using optical detectors) appears on 117 US grants and 121 published applications in this corpus.
Search patents in A47L- Granted patents
- 117
- Published applications
- 121
- Assignees
- 68
- Inventors
- 344
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 6 |
| 2013 | 0 | 2 |
| 2014 | 2 | 2 |
| 2015 | 4 | 2 |
| 2016 | 5 | 5 |
| 2017 | 2 | 6 |
| 2018 | 7 | 7 |
| 2019 | 3 | 12 |
| 2020 | 4 | 18 |
| 2021 | 9 | 13 |
| 2022 | 12 | 7 |
| 2023 | 11 | 15 |
| 2024 | 15 | 7 |
| 2025 | 7 | 7 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Cleaner257US 5,613,261 AMinolta Co., Ltd. · 1997
- Floor nozzle for vacuum cleaners199US 5,539,953 A1996
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