G08B 13/183
By interruption of a radiation beam or barrier
Official title: by interruption of a radiation beam or barrier
G08B13/183 (By interruption of a radiation beam or barrier) appears on 390 US grants and 358 published applications in this corpus.
Search patents in G08B- Granted patents
- 390
- Published applications
- 358
- Assignees
- 245
- Inventors
- 722
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 7 |
| 2003 | 3 | 9 |
| 2004 | 10 | 15 |
| 2005 | 12 | 15 |
| 2006 | 12 | 25 |
| 2007 | 16 | 20 |
| 2008 | 13 | 23 |
| 2009 | 15 | 16 |
| 2010 | 15 | 21 |
| 2011 | 7 | 10 |
| 2012 | 6 | 14 |
| 2013 | 7 | 13 |
| 2014 | 14 | 10 |
| 2015 | 11 | 14 |
| 2016 | 9 | 9 |
| 2017 | 9 | 10 |
| 2018 | 14 | 14 |
| 2019 | 15 | 18 |
| 2020 | 12 | 13 |
| 2021 | 19 | 19 |
| 2022 | 15 | 21 |
| 2023 | 13 | 13 |
| 2024 | 13 | 12 |
| 2025 | 9 | 7 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical fiber-based tsunami warning system using submarine telecommunication cables15 Sep 2026US 12,736,375 B2California Institute of Technology
- Transmission line monitoring system testing28 Jul 2026US 12,694,768 B2CyberSecure IPS, LLC
- Optical fiber sensing system, optical fiber sensing equipment, and unmanned aerial vehicle allocation method7 Apr 2026US 12,596,386 B2NEC Corporation
- Abnormality determination method, abnormality determination apparatus, abnormality determination system, and non-transitory computer-readable medium10 Mar 2026US 12,573,275 B2NEC Corporation
- Keep out zone system6 Jan 2026US 12,518,609 B2Milwaukee Electric Tool Corporation
- Method and system for determining a position of a plurality of lidar sensors for industrial risky zones6 Aug 2026US 2026/0227497 A1Siemens Industry Software Inc.
- Monitoring device, monitoring method, and computer-readable medium30 Jul 2026US 2026/0219101 A1NEC Corporation
- Intrusion detection system and method9 Jul 2026US 2026/0196115 A1Essence Security International (E.S.I.) Ltd.
- Monitoring intrusion events using optical fibers23 Apr 2026US 2026/0110569 A1
- Portable alarm23 Apr 2026US 2026/0112254 A1Birdie Love LLC
Most cited
By later US patents
- Obstacle-detecting apparatus502US 5,331,312 AMatsushita Electric Industrial Co., Ltd. · 1994
- Apparatus and method for fiber optic intrusion sensing227US 5,194,847 AThe Texas A&M University System · 1993
- Fiber optic security system146US 5,055,827 A1991
- Portal intrusion detection apparatus and method140US 6,720,874 B2IDS Systems, Inc. · 2004
- Remote patrol system98US 5,559,496 A1996