H01T 4/00
Overvoltage arresters using spark gaps
Official title: Overvoltage arresters using spark gaps (H01T2/00 takes precedence; overvoltage protection circuits using spark gaps H02H9/06)
H01T4/00 (Overvoltage arresters using spark gaps) appears on 894 US grants and 568 published applications in this corpus.
Search patents in H01T- Granted patents
- 894
- Published applications
- 568
- Assignees
- 380
- Inventors
- 1,525
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 18 | 0 |
| 1978 | 15 | 0 |
| 1979 | 14 | 0 |
| 1980 | 12 | 0 |
| 1981 | 8 | 0 |
| 1982 | 26 | 0 |
| 1983 | 16 | 0 |
| 1984 | 13 | 0 |
| 1985 | 20 | 0 |
| 1986 | 21 | 0 |
| 1987 | 18 | 0 |
| 1988 | 18 | 0 |
| 1989 | 14 | 0 |
| 1990 | 21 | 0 |
| 1991 | 9 | 0 |
| 1992 | 11 | 0 |
| 1993 | 15 | 0 |
| 1994 | 21 | 0 |
| 1995 | 14 | 0 |
| 1996 | 15 | 0 |
| 1997 | 9 | 0 |
| 1998 | 19 | 0 |
| 1999 | 25 | 0 |
| 2000 | 16 | 0 |
| 2001 | 14 | 4 |
| 2002 | 15 | 20 |
| 2003 | 12 | 8 |
| 2004 | 17 | 21 |
| 2005 | 10 | 9 |
| 2006 | 9 | 13 |
| 2007 | 9 | 15 |
| 2008 | 10 | 24 |
| 2009 | 13 | 18 |
| 2010 | 13 | 24 |
| 2011 | 18 | 24 |
| 2012 | 11 | 24 |
| 2013 | 25 | 33 |
| 2014 | 27 | 39 |
| 2015 | 27 | 33 |
| 2016 | 28 | 33 |
| 2017 | 33 | 29 |
| 2018 | 20 | 34 |
| 2019 | 37 | 32 |
| 2020 | 26 | 31 |
| 2021 | 34 | 18 |
| 2022 | 19 | 19 |
| 2023 | 19 | 21 |
| 2024 | 17 | 22 |
| 2025 | 19 | 13 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01T 4/10Overvoltage arresters using spark gaps: having a single gap or a plurality356
- H01T 4/06Mounting arrangements for a plurality of overvoltage arresters252
- H01T 4/08Structurally associated with protected apparatus238
- H01T 4/04Housings97
- H01T 4/16Overvoltage arresters using spark gaps: having a plurality of gaps arranged in81
- H01T 4/02Details56
Recent patents
- Spark gaps with high current capability for electrical overstress detection and protection25 Aug 2026US 12,719,242 B2Analog Devices International Unlimited Company
- Printed circuit spark gap with enhanced spark over voltage to protect an electronic device connected to the spark gap11 Aug 2026US 12,706,445 B2Ppc Broadband, Inc.
- Devices and methods related to gas discharge tubes28 Jul 2026US 12,695,044 B2Bourns, Inc.
- Gas-filled spark gap with high follow current extinction capacity31 Mar 2026US 12,592,549 B2Citel
- Protection device against pulsed currents10 Mar 2026US 12,573,819 B2Citel
- Graded spark gap design for internally gapped surge arrester27 Aug 2026US 2026/0253768 A1
- Transient voltage protection device13 Aug 2026US 2026/0237560 A1TDK Corporation
- Surge arrester4 Jun 2026US 2026/0155634 A1Streamer, Electric Company Inc.
- Sensor element with overvoltage protection23 Apr 2026US 2026/0110579 A1Innovative Sensor Technology IST AG
- Surge protection device, mov with integrated short circuit protection, insertion system and arc shield16 Apr 2026US 2026/0106451 A1MERSEN USA EP Corp.
Most cited
By later US patents
- Module for electrically connecting conductor wires to circuits of flat surfaces such as solar panels165US 5,513,075 AThe Whitaker Corporation · 1996
- Passive overvoltage protection devices, especially for protection of computer equipment connected to data lines147US 4,586,104 ARIT Research Corp. · 1986
- Externally gapped line arrester134US 8,711,538 B22014
- Apparatus for high surge voltage protection125US 7,161,785 B2John Mezzalingua Associates, Inc. · 2007
- High voltage surge protection element for use with CATV coaxial cable connectors121US 7,102,868 B2John Mezzalingua Associates, Inc. · 2006