B66B 21/02
Escalators
B66B21/02 (Escalators) appears on 161 US grants and 137 published applications in this corpus.
Search patents in B66B- Granted patents
- 161
- Published applications
- 137
- Assignees
- 34
- Inventors
- 264
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 4 |
| 2005 | 1 | 1 |
| 2006 | 3 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 3 | 13 |
| 2016 | 11 | 10 |
| 2017 | 6 | 6 |
| 2018 | 17 | 25 |
| 2019 | 24 | 14 |
| 2020 | 9 | 12 |
| 2021 | 15 | 17 |
| 2022 | 8 | 4 |
| 2023 | 3 | 4 |
| 2024 | 8 | 5 |
| 2025 | 2 | 8 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Assembled passenger conveying system, method of assembling the same, and modularized device8 Sep 2026US 12,729,098 B2Otis Elevator Company
- Passenger conveyor system and anti-collision device for step and comb plate14 Jul 2026US 12,679,700 B2Otis Elevator Company
- Escalator module and escalator30 Jun 2026US 12,668,459 B2Kone Corporation
- Automatic conveying device and maintenance method therefor16 Jun 2026US 12,654,995 B2Otis Elevator Company
- Automatic conveying device, method for determining the presence of external objects, and automatic start method16 Jun 2026US 12,654,996 B2Otis Elevator Company
- Escalator apparatus having a height-limiting device acting on step rollers, and use3 Sep 2026US 2026/0257893 A1TK Elevator Innovation and Operations GmbH
- Modernization escalator25 Jun 2026US 2026/0176076 A1Hanson Lift (Suzhou) Co., Ltd.
- Passenger conveying device and method for safely operating a passenger conveying device19 Jun 2025US 2025/0197168 A1Tk Escalator Norte, S.A.
- Step of passenger conveyor and passenger conveyor12 Jun 2025US 2025/0187879 A1Otis Elevator Company
- Automatic step cleaning device for passenger conveyor and passenger conveyor22 May 2025US 2025/0162839 A1Otis Elevator Company
Most cited
By later US patents
- Traveling vehicle and method of controlling the traveling vehicle20US 10,266,097 B2The University of Tokyo · 2019
- Curved escalator16US 4,746,000 AMitsubishi Denki Kabushiki Kaisha · 1988
- Curved escalator15US 4,662,502 AMitsubishi Denki Kabushiki Kaisha · 1987
- Curved escalator14US 4,730,717 AMitsubishi Denki Kabushiki Kaisha · 1988
- Transportation apparatus having adjustable skirts14US 4,842,122 AWestinghouse Electric Corp. · 1989