H01T 13/40
Structurally combined with other devices
Official title: structurally combined with other devices (combined or associated with fuel injectors F02M57/06; structurally combined with other parts of internal-combustion engines F02P13/00)
H01T13/40 (Structurally combined with other devices) appears on 390 US grants and 288 published applications in this corpus.
Search patents in H01T- Granted patents
- 390
- Published applications
- 288
- Assignees
- 109
- Inventors
- 622
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 16 | 0 |
| 2002 | 10 | 4 |
| 2003 | 8 | 9 |
| 2004 | 8 | 10 |
| 2005 | 6 | 4 |
| 2006 | 10 | 7 |
| 2007 | 6 | 11 |
| 2008 | 6 | 6 |
| 2009 | 3 | 6 |
| 2010 | 3 | 7 |
| 2011 | 9 | 8 |
| 2012 | 10 | 13 |
| 2013 | 4 | 16 |
| 2014 | 15 | 25 |
| 2015 | 14 | 22 |
| 2016 | 24 | 18 |
| 2017 | 29 | 37 |
| 2018 | 27 | 29 |
| 2019 | 30 | 16 |
| 2020 | 15 | 12 |
| 2021 | 7 | 7 |
| 2022 | 10 | 8 |
| 2023 | 5 | 5 |
| 2024 | 4 | 3 |
| 2025 | 5 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ignition system using push-pull transformer9 Dec 2025US 12,494,622 B2
- Spark plug with electrode head shielding element5 Aug 2025US 12,381,374 B2EcoPower Spark, LLC
- Spark plug3 Jun 2025US 12,322,931 B2Niterra Co., Ltd.
- Spark igniter with magnetic field for pushing spark25 Feb 2025US 12,237,649 B2Pratt & Whitney Canada Corp.
- Spark plug resistance element and spark plug25 Feb 2025US 12,237,650 B2Robert Bosch GmbH
- Spark plug resistor element arrangement, method for producing same, and spark plug for an internal combustion engine27 Aug 2026US 2026/0254205 A1
- Spark plug9 Jul 2026US 2026/0196808 A1
- Spark plug25 Dec 2025US 2025/0392105 A1Niterra Co., Ltd.
- Ignition system using push-pull transformer21 Aug 2025US 2025/0266665 A1Marshall Electric Corp.
- Tubular structure adapted to at least partly enclose a pencil coil for internal combustion engines14 Aug 2025US 2025/0257683 A1Sem AB
Most cited
By later US patents
- Spark plug with measuring means78US 4,489,596 ARobert Bosch GmbH · 1984
- Resistor-incorporated spark plug and manufacturing method of resistor-incorporated spark plug41US 6,160,342 ANgk Spark Plug Co., Ltd. · 2000
- Spark plug40US 6,073,607 ABBL Technologies, Inc. · 2000
- Engine ignition coil device34US 5,870,012 AToyo Denso Kabushiki Kaisha · 1999
- Integrated spark plug ignition coil with pressure sensor for an internal combustion engine31US 6,119,667 ADelphi Technologies, Inc. · 2000