G08B 13/184
Using radiation reflectors
Official title: using radiation reflectors
G08B13/184 (Using radiation reflectors) appears on 63 US grants and 55 published applications in this corpus.
Search patents in G08B- Granted patents
- 63
- Published applications
- 55
- Assignees
- 47
- Inventors
- 124
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 3 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 6 |
| 2009 | 1 | 6 |
| 2010 | 4 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 1 |
| 2017 | 3 | 2 |
| 2018 | 1 | 4 |
| 2019 | 1 | 1 |
| 2020 | 3 | 5 |
| 2021 | 2 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 2 |
| 2024 | 3 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Beam detectors27 May 2025US 12,313,452 B2FFE Limited
- Portable alarm29 Apr 2025US 12,288,452 B1Birdie Love LLC
- Laser scanning sensor13 Feb 2024US 11,899,109 B2Optex Co., Ltd.
- Alarm screen with embedded wireless transmitter30 Jan 2024US 11,887,447 B2
- Systems and methods for detecting motion in a zone2 Jan 2024US 11,862,000 B2Verizon Patent and Licensing Inc.
- Intrusion detection system and method9 Jul 2026US 2026/0196115 A1Essence Security International (E.S.I.) Ltd.
- Portable alarm23 Apr 2026US 2026/0112254 A1Birdie Love LLC
- Scan sensor15 Jan 2026US 2026/0016596 A1Optex Co., Ltd.
- Monitoring physical access of devices using light-based communications13 Mar 2025US 2025/0087069 A1Dell Products L. P.
- Data center security system13 Jun 2024US 2024/0193312 A1InVue Security Products Inc.
Most cited
By later US patents
- Passive line-of-sight optical switching apparatus57US 4,727,593 A1988
- Light-curtain area security system45US 4,742,337 ATelenot Electronic GmbH · 1988
- Light curtain device29US 6,354,716 B1Honeywell International Inc. · 2002
- Optical apparatus28US 4,127,771 AErwin Sick GmbH Optik-Elektronik · 1978
- Optical apparatus for producing a light curtain26US 4,052,120 AErwin Sick GmbH Optik-Elektronik · 1977