H01T 13/60
Of electrical properties
Official title: of electrical properties
H01T13/60 (Of electrical properties) appears on 70 US grants and 45 published applications in this corpus.
Search patents in H01T- Granted patents
- 70
- Published applications
- 45
- Assignees
- 46
- Inventors
- 129
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 2 | 3 |
| 2016 | 4 | 3 |
| 2017 | 5 | 7 |
| 2018 | 5 | 8 |
| 2019 | 5 | 5 |
| 2020 | 5 | 2 |
| 2021 | 3 | 4 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
| 2024 | 3 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Insulator and spark plug3 Jun 2025US 12,322,930 B2Niterra Co., Ltd.
- Measuring a spark of a spark plug15 Oct 2024US 12,116,967 B2Woodward, Inc.
- Method and device for detecting the breakdown voltage between the electrodes of a spark plug connected to an ignition coil for a cylinder ignition system in an internal combustion engine11 Jun 2024US 12,006,905 B2Eldor Corporation S.P.A.
- Spark plug heat rating measurement method and system based on spark discharge current active heating5 Mar 2024US 11,923,663 B2Weichai Torch Technology Co., Ltd.
- Spark igniter life detection24 Oct 2023US 11,798,324 B2Champion Aerospace Inc.
- Insulator and spark plug12 Sep 2024US 2024/0305070 A1Niterra Co., Ltd.
- Measuring a spark of a spark plug28 Mar 2024US 2024/0102437 A1Woodward, Inc.
- Ignition apparatus23 Dec 2021US 2021/0399533 A1Mitsubishi Electric Corporation
- Spark plug heat rating measurement method and system based on spark discharge current active heating11 Nov 2021US 2021/0351574 A1Weichai Torch Technology Co., Ltd.
- Method for operating an internal combustion engine, and controller for carrying out the method28 Oct 2021US 2021/0332783 A1Robert Bosch GmbH
Most cited
By later US patents
- Hand-held ignition voltage tester118US 6,396,278 B12002
- Detecting field from different ignition coils using adjustable probe56US 6,940,283 B2Snap-on Incorporated · 2005
- Capacitive coupled clamp-on voltage probe23US 4,090,130 AUnited Technologies Corporation · 1978
- Ignition secondary analyzer21US 4,558,280 ACooper Industries, Inc. · 1985
- Device for detecting premature ignition in an internal-combustion engine19US 4,233,943 AAlfa Romeo S.p.A. · 1980