patentgrepDocs Get an API key

A47L 9/2826

The condition of the floor

Official title: {the condition of the floor}

A47L9/2826 (The condition of the floor) appears on 516 US grants and 687 published applications in this corpus.

Search patents in A47L

Granted patents: 516
Published applications: 687
Assignees: 158
Inventors: 1,176
Latest grant: 6 Oct 2026

Filings by year

A47L 9/2826: granted patents and published applications per publication year
Year	Granted patents	Published applications
1987	1	0
1988	0	0
1989	1	0
1990	3	0
1991	1	0
1992	1	0
1993	2	0
1994	2	0
1995	2	0
1996	0	0
1997	0	0
1998	2	0
1999	0	0
2000	2	0
2001	2	0
2002	3	2
2003	1	1
2004	0	8
2005	2	6
2006	1	2
2007	4	6
2008	2	10
2009	3	2
2010	2	6
2011	0	4
2012	2	5
2013	9	5
2014	10	12
2015	11	7
2016	14	18
2017	11	43
2018	20	50
2019	37	94
2020	51	74
2021	46	85
2022	73	46
2023	54	72
2024	55	51
2025	51	43
2026	35	35

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Recent patents

Cleaning apparatus, and housing and sensor used therefor6 Oct 2026US 12,751,591 B2Beijing Roborock Technology Co., Ltd.
Vacuum cleaner and method for controlling the same15 Sep 2026US 12,733,782 B2Samsung Electronics Co., Ltd.
SLAM robot and a paired application thereof15 Sep 2026US 12,736,962 B1AI Incorporated
Robot cleaner and controlling method thereof15 Sep 2026US 12,736,984 B2Samsung Electronics Co., Ltd.
Cleaning robot and method of controlling same8 Sep 2026US 12,727,723 B2Samsung Electronics Co., Ltd.

Most cited

By later US patents