H02K 5/136
Explosion-proof
Official title: explosion-proof
H02K5/136 (Explosion-proof) appears on 111 US grants and 101 published applications in this corpus.
Search patents in H02K- Granted patents
- 111
- Published applications
- 101
- Assignees
- 97
- Inventors
- 259
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 0 |
| 2005 | 2 | 3 |
| 2006 | 0 | 5 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 5 |
| 2010 | 1 | 8 |
| 2011 | 2 | 4 |
| 2012 | 4 | 1 |
| 2013 | 4 | 5 |
| 2014 | 1 | 6 |
| 2015 | 6 | 7 |
| 2016 | 7 | 8 |
| 2017 | 5 | 3 |
| 2018 | 5 | 7 |
| 2019 | 2 | 4 |
| 2020 | 10 | 7 |
| 2021 | 4 | 9 |
| 2022 | 7 | 5 |
| 2023 | 4 | 5 |
| 2024 | 8 | 1 |
| 2025 | 2 | 3 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Enclosed torque controlled electric actuator and method8 Sep 2026US 12,732,056 B2Premium Oilfield Technologies, LLC
- Generator enclosure with fire damper17 Mar 2026US 12,580,455 B2Discovery Energy, LLC
- Intrinsically safe and explosion proof enclosure for convertible gas detectors27 Jan 2026US 12,535,473 B2Detector Electronics Buyer US, LLC
- Combined power system6 Jan 2026US 12,519,373 B2Honda Motor Co., Ltd.
- Hydrogen recirculation blower19 Aug 2025US 12,395,037 B2BorgWarner Inc.
- Containment ring11 Dec 2025US 2025/0376932 A1
- Combined power system7 Aug 2025US 2025/0253739 A1Honda Motor Co., Ltd.
- Coated rotating electric machine and coating application method on a rotating electric machine13 Feb 2025US 2025/0055345 A1Weg Equipamentos EléTricos S.A.
- Generator enclosure with fire damper18 Jul 2024US 2024/0243642 A1Kohler Co.
- Power converter for integrated control of electric oil pumps30 Nov 2023US 2023/0384805 A1Hyundai Transys Inc.
Most cited
By later US patents
- Explosion-proof electrical generator system49US 4,814,651 A1989
- Rugged explosion-proof actuator with integral electronics43US 6,392,322 B1Precision Engine Controls Corporation · 2002
- Method and system for cooling a motor or motor enclosure36US 7,687,945 B2Bluwav Systems, LLC · 2010
- Brushless pump motor with built-in electronic control31US 5,073,736 AFlux-Gerate Gesellschaft mit beschrankter Haftung · 1991
- Rotary pump with immersed rotor30US 6,350,109 B1Societe de Mecanique Magnetique · 2002