H01C 7/12
Overvoltage protection resistors
Official title: Overvoltage protection resistors; Arresters
H01C7/12 (Overvoltage protection resistors) appears on 866 US grants and 706 published applications in this corpus.
Search patents in H01C- Granted patents
- 866
- Published applications
- 706
- Assignees
- 334
- Inventors
- 1,602
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 15 | 0 |
| 1981 | 12 | 0 |
| 1982 | 14 | 0 |
| 1983 | 5 | 0 |
| 1984 | 13 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 11 | 0 |
| 1989 | 16 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 18 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 23 | 0 |
| 2000 | 17 | 0 |
| 2001 | 20 | 6 |
| 2002 | 26 | 9 |
| 2003 | 16 | 13 |
| 2004 | 9 | 15 |
| 2005 | 8 | 13 |
| 2006 | 17 | 25 |
| 2007 | 10 | 24 |
| 2008 | 6 | 17 |
| 2009 | 20 | 16 |
| 2010 | 16 | 22 |
| 2011 | 13 | 23 |
| 2012 | 19 | 24 |
| 2013 | 20 | 29 |
| 2014 | 28 | 25 |
| 2015 | 22 | 33 |
| 2016 | 22 | 33 |
| 2017 | 29 | 30 |
| 2018 | 33 | 40 |
| 2019 | 43 | 46 |
| 2020 | 37 | 59 |
| 2021 | 39 | 35 |
| 2022 | 45 | 39 |
| 2023 | 30 | 37 |
| 2024 | 32 | 38 |
| 2025 | 26 | 30 |
| 2026 | 19 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Manufacturing method for laminated ceramic component6 Oct 2026US 12,755,876 B2Panasonic Intellectual Property Management Co., Ltd.
- Transient voltage protection device8 Sep 2026US 12,731,705 B2TDK Corporation
- Surge arrester module and surge arrester28 Jul 2026US 12,695,008 B2Hitachi Energy Ltd
- Thermally protected metal oxide varistor21 Jul 2026US 12,688,957 B2Dongguan Littelfuse Electronics Company Limited
- Voltage clamping circuit for solid state circuit breakers21 Jul 2026US 12,689,209 B2ABB Schweiz AG
- Transient voltage protection device1 Oct 2026US 2026/0302008 A1TDK Corporation
- Low voc coating for high-temperature movs1 Oct 2026US 2026/0302009 A1Dongguan Littelfuse Electronics Company Limited
- 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 protection device for wireless communications13 Aug 2026US 2026/0237933 A1
Most cited
By later US patents
- Line protector for a communications circuit121US 4,262,317 AReliable Electric Company · 1981
- Current limiting device117US 5,614,881 AGeneral Electric Company · 1997
- Surface-mountable device for protection against electrostatic damage to electronic components108US 6,191,928 B1Littelfuse, Inc. · 2001
- Monolythic surge suppressor107US 5,321,573 ADale Electronics, Inc. · 1994
- Low voltage, high energy surge arrester for secondary applications100US 5,220,480 ACooper Power Systems, Inc. · 1993