G05B 2219/24028
Explosion free control, intrinsically safe
G05B2219/24028 (Explosion free control, intrinsically safe) appears on 50 US grants and 46 published applications in this corpus.
Search patents in G05B- Granted patents
- 50
- Published applications
- 46
- Assignees
- 38
- Inventors
- 106
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 3 | 0 |
| 2007 | 1 | 5 |
| 2008 | 1 | 4 |
| 2009 | 2 | 1 |
| 2010 | 3 | 3 |
| 2011 | 2 | 0 |
| 2012 | 0 | 10 |
| 2013 | 3 | 1 |
| 2014 | 2 | 1 |
| 2015 | 3 | 3 |
| 2016 | 1 | 2 |
| 2017 | 4 | 1 |
| 2018 | 3 | 0 |
| 2019 | 3 | 4 |
| 2020 | 3 | 0 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Intrinsically safe automation field device23 Dec 2025US 12,504,732 B2Endress + Hauser GmbH + Co. KG
- Configurable isolator8 Aug 2023US 11,721,971 B2Eaton Intelligent Power Limited
- Unidirectional field device data transfer21 Dec 2021US 11,206,696 B2Rosemount Inc.
- Intrinsic safety (IS) barriers mountable on terminal blocks of input/output (I/O) modules or other devices13 Jul 2021US 11,063,426 B2Honeywell International Inc.
- Housing lid for a field device of automation technology for wireless transmission of information24 Nov 2020US 10,847,926 B2Endress + Hauser GmbH + Co. KG
- Intrinsically safe automation field device12 Oct 2023US 2023/0324871 A1Endress + Hauser GmbH + Co. KG
- Apparatus and Method for Controlling a Safety-Critical Process17 Aug 2023US 2023/0259098 A1Pilz GmbH & Co.KG
- Unidirectional field device data transfer25 Mar 2021US 2021/0092780 A1Rosemount Inc.
- Housing lid for a field device of automation technology for wireless transmission of information18 Jul 2019US 2019/0221961 A1Endress + Hauser GmbH + Co. KG
- Intrinsic safety (is) barriers mountable on terminal blocks of input/output (i/o) modules or other devices25 Apr 2019US 2019/0123548 A1Honeywell International Inc.
Most cited
By later US patents
- Decentralized control system and shutdown control apparatus64US 6,023,399 AHitachi, Ltd. · 2000
- Serial data isolator industrial control system providing intrinsically safe operation62US 6,037,857 AAllen-Bradley Company, Inc. · 2000
- Actuator controller for monitoring health and status of the actuator and/or other equipment41US 7,636,613 B2Curtiss-Wright Flow Control Corporation · 2009
- Handheld field maintenance tool with improved locational awareness functionality36US 8,766,794 B2Fisher-Rosemount Systems, Inc. · 2014
- Intrinsically safe field maintenance tool35US 6,889,166 B2Fisher-Rosemount Systems, Inc. · 2005