H02G 13/40
Connection to earth
Official title: {Connection to earth}
H02G13/40 (Connection to earth) appears on 128 US grants and 135 published applications in this corpus.
Search patents in H02G- Granted patents
- 128
- Published applications
- 135
- Assignees
- 87
- Inventors
- 253
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 6 |
| 2003 | 2 | 2 |
| 2004 | 6 | 1 |
| 2005 | 3 | 3 |
| 2006 | 0 | 3 |
| 2007 | 3 | 4 |
| 2008 | 1 | 1 |
| 2009 | 2 | 6 |
| 2010 | 4 | 3 |
| 2011 | 6 | 1 |
| 2012 | 1 | 6 |
| 2013 | 3 | 3 |
| 2014 | 3 | 4 |
| 2015 | 4 | 6 |
| 2016 | 4 | 3 |
| 2017 | 4 | 7 |
| 2018 | 3 | 10 |
| 2019 | 9 | 9 |
| 2020 | 7 | 10 |
| 2021 | 9 | 10 |
| 2022 | 7 | 13 |
| 2023 | 10 | 8 |
| 2024 | 6 | 5 |
| 2025 | 9 | 7 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Assembly for potential equalization in potentially explosive areas1 Sep 2026US 12,726,011 B2Dehn SE
- Wind turbine blade18 Aug 2026US 12,710,028 B2Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Low-profile, after-aligned, universal point mount17 Mar 2026US 12,580,376 B2Lightning Protection Systems, LLC
- Lightning rod with electric double layer and electric dipole moment type discharge amplification function10 Mar 2026US 12,573,831 B2Sunkwang Lightning Protection Technical Institute Inc.
- Power transmission tower structure with embedded ground conductor for improving lightning performance and method for determining location and effect of embedded conductor4 Nov 2025US 12,463,410 B2
- Grounding apparatus and method3 Sep 2026US 2026/0261058 A1Ohmega Technologies Inc.
- Wind turbine blade2 Jul 2026US 2026/0185505 A1Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Thunder and lightning intercepting apparatus25 Jun 2026US 2026/0180289 A1Foshan Shunde Lunjiao Jindun Lightning Protection Technology Development Co., Ltd
- Method for providing a grounding solution for lightning strikes1 Jan 2026US 2026/0005504 A1Florida Power & Light Company
- Electric charge shielding device2 Oct 2025US 2025/0309630 A1Ground Lightning S.A.S
Most cited
By later US patents
- Fracturing well site system63US 11,596,047 B2Yantai Jereh Petroleum Equipments Technologies Co., Ltd. · 2023
- Method of lightning-proofing a blade for a wind-energy plant, a lightning-proofed blade and a wind-energy plant comprising such blade31US 7,651,320 B2Lm Glasfiber A/S · 2010
- Guard for a high voltage electrical terminal bushing28US 4,201,883 A1980
- Member for potential equalising27US 7,494,324 B2Vestas Wind Systems A/S · 2009
- Grounding panel24US 5,986,869 APolyPhaser Corporation · 1999