A47L 11/4097
Means for exhaust-air diffusion
Official title: {Means for exhaust-air diffusion; Exhaust-air treatment, e.g. air purification; Means for sound or vibration damping}
A47L11/4097 (Means for exhaust-air diffusion) appears on 116 US grants and 119 published applications in this corpus.
Search patents in A47L- Granted patents
- 116
- Published applications
- 119
- Assignees
- 65
- Inventors
- 240
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
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| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 4 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 2 | 8 |
| 2009 | 0 | 9 |
| 2010 | 8 | 4 |
| 2011 | 5 | 1 |
| 2012 | 4 | 3 |
| 2013 | 6 | 4 |
| 2014 | 2 | 10 |
| 2015 | 3 | 1 |
| 2016 | 6 | 8 |
| 2017 | 3 | 6 |
| 2018 | 4 | 2 |
| 2019 | 5 | 7 |
| 2020 | 1 | 7 |
| 2021 | 5 | 8 |
| 2022 | 5 | 6 |
| 2023 | 7 | 4 |
| 2024 | 3 | 7 |
| 2025 | 3 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Cleaning robot roller processing156US 8,087,117 B2iRobot Corporation · 2012
- Automatic floor scrubber136US 5,369,838 AAdvance Machine Company · 1994
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- Removing debris from cleaning robots113US 8,572,799 B2iRobot Corporation · 2013
- Device and methods of providing air purification in combination with superficial floor cleaning112US 7,837,958 B2S. C. Johnson & Son, Inc. · 2010