H02H 9/04
Responsive to excess voltage
Official title: responsive to excess voltage (lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T)
H02H9/04 (Responsive to excess voltage) appears on 3,952 US grants and 3,910 published applications in this corpus.
Search patents in H02H- Granted patents
- 3,952
- Published applications
- 3,910
- Assignees
- 1,481
- Inventors
- 7,563
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 17 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 15 | 0 |
| 1982 | 14 | 0 |
| 1983 | 9 | 0 |
| 1984 | 19 | 0 |
| 1985 | 8 | 0 |
| 1986 | 18 | 0 |
| 1987 | 26 | 0 |
| 1988 | 12 | 0 |
| 1989 | 33 | 0 |
| 1990 | 34 | 0 |
| 1991 | 25 | 0 |
| 1992 | 33 | 0 |
| 1993 | 42 | 0 |
| 1994 | 33 | 0 |
| 1995 | 25 | 0 |
| 1996 | 45 | 0 |
| 1997 | 42 | 0 |
| 1998 | 58 | 0 |
| 1999 | 58 | 0 |
| 2000 | 50 | 0 |
| 2001 | 31 | 7 |
| 2002 | 30 | 30 |
| 2003 | 39 | 36 |
| 2004 | 31 | 44 |
| 2005 | 28 | 43 |
| 2006 | 30 | 65 |
| 2007 | 33 | 66 |
| 2008 | 37 | 71 |
| 2009 | 50 | 82 |
| 2010 | 53 | 54 |
| 2011 | 64 | 76 |
| 2012 | 57 | 126 |
| 2013 | 83 | 223 |
| 2014 | 167 | 251 |
| 2015 | 200 | 255 |
| 2016 | 216 | 246 |
| 2017 | 205 | 211 |
| 2018 | 196 | 248 |
| 2019 | 275 | 267 |
| 2020 | 237 | 267 |
| 2021 | 281 | 206 |
| 2022 | 239 | 233 |
| 2023 | 217 | 213 |
| 2024 | 189 | 235 |
| 2025 | 193 | 213 |
| 2026 | 118 | 142 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02H 9/045Adapted to a particular application and not provided for elsewhere1,839
- H02H 9/041Using a short-circuiting device740
- H02H 9/042Comprising means to limit the absorbed power or indicate damaged over-voltage protection566
- H02H 9/044Physical layout, materials not provided for elsewhere310
- H02H 9/06Using spark-gap arresters293
- H02H 9/043Protection of over-voltage protection device by short-circuiting141
- H02H 9/048Anti-latching or quenching devices, i.e. bringing the protection device back to its28
- H02H 9/049Circuit arrangements for limiting the number of protection devices12
Recent patents
- Methods and devices for managing power supply systems6 Oct 2026US 12,756,180 B2Comcast Cable Communications, LLC
- Integrated circuit6 Oct 2026US 12,756,182 B2Via Labs, Inc.
- Semiconductor device6 Oct 2026US 12,756,183 B2Socionext Inc.
- Surge suppression device29 Sep 2026US 12,749,890 B2Proterial, Ltd.
- Protection unit, ADC module and system29 Sep 2026US 12,749,891 B2ABB Schweiz AG
- Communication device and communication system8 Oct 2026US 2026/0312399 A1Denso Corporation
- Electrostatic discharge (esd) protection circuit using tie-cell technique8 Oct 2026US 2026/0312400 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Protection circuit and electronic device8 Oct 2026US 2026/0312401 A1KYOCERA Document Solutions Inc.
- Electrostatic discharge protection8 Oct 2026US 2026/0312402 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Discharging of a damping capacitor8 Oct 2026US 2026/0312581 A1ams-OSRAM AG
Most cited
By later US patents
- Thin film overvoltage protection devices271US 4,809,044 AEnergy Conversion Devices, Inc. · 1989
- Distributed maximum power point tracking system, structure and process185US 8,035,249 B2Newdoll Enterprises LLC · 2011
- Distributed maximum power point tracking system, structure and process182US 8,427,009 B2Newdoll Enterprises LLC · 2013
- Distributed maximum power point tracking system, structure and process177US 7,772,716 B2Newdoll Enterprises LLC · 2010
- Transient and surge protection apparatus153US 4,023,071 A1977