G08B 21/22
Responsive to presence or absence of persons
Official title: responsive to presence or absence of persons
G08B21/22 (Responsive to presence or absence of persons) appears on 1,808 US grants and 1,981 published applications in this corpus.
Search patents in G08B- Granted patents
- 1,808
- Published applications
- 1,981
- Assignees
- 836
- Inventors
- 3,942
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 19 | 0 |
| 2000 | 21 | 0 |
| 2001 | 14 | 3 |
| 2002 | 9 | 15 |
| 2003 | 9 | 18 |
| 2004 | 19 | 27 |
| 2005 | 18 | 40 |
| 2006 | 40 | 52 |
| 2007 | 22 | 46 |
| 2008 | 31 | 57 |
| 2009 | 31 | 39 |
| 2010 | 31 | 39 |
| 2011 | 30 | 52 |
| 2012 | 28 | 50 |
| 2013 | 53 | 42 |
| 2014 | 53 | 63 |
| 2015 | 45 | 89 |
| 2016 | 86 | 87 |
| 2017 | 106 | 135 |
| 2018 | 117 | 133 |
| 2019 | 129 | 168 |
| 2020 | 144 | 161 |
| 2021 | 150 | 146 |
| 2022 | 127 | 160 |
| 2023 | 125 | 123 |
| 2024 | 103 | 100 |
| 2025 | 89 | 84 |
| 2026 | 44 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for detecting an entity in the vicinity of a drilling machine, and corresponding method25 Aug 2026US 12,715,740 B2Mbi Produits De Forage Inc.
- Digital video alarm situational monitoring computer system25 Aug 2026US 12,720,162 B2Dice Corporation
- Release monitoring through check-in and tethering system18 Aug 2026US 12,711,826 B2Global Tel'Link Corporation
- Electronic monitoring (EM) GPS decision aid18 Aug 2026US 12,711,850 B2The University of Chicago
- System including wireless handheld mobile device configured for monitoring selected areas11 Aug 2026US 12,705,965 B2T-Mobile USA, Inc.
- Alarm apparatus and alarm method1 Oct 2026US 2026/0301557 A1Toyota Jidosha Kabushiki Kaisha
- Wearable locator device24 Sep 2026US 2026/0287702 A1
- Image forming system24 Sep 2026US 2026/0290020 A1FUJIFILM Business Innovation Corp.
- Monitoring system of clean room17 Sep 2026US 2026/0279185 A1Tokyo Electron Limited
- Personal tracking device3 Sep 2026US 2026/0260556 A1Iowise Technologies, Inc.
Most cited
By later US patents
- Cellular position locating system1,021US 5,043,736 ACAE-Link Corporation · 1991
- Patient safety system with automatically adjusting bed794US 8,723,677 B1Masimo Corporation · 2014
- System and method for connecting security systems to a wireless device681US 7,113,090 B1Alarm.com Incorporated · 2006
- Personal security and tracking system591US 5,742,233 AHoffman Resources LLC · 1998
- Locator device useful for house arrest and stalker detection582US 5,461,390 AAT&T IPM Corp. · 1995