Sem AB
Åmål, SE· latest recorded location
SEM AB is named on 24 US grants and 23 published applications in this corpus. Its most frequent classification is F02P (Ignition, other than compression ignition, for internal-combustion engines).
- Granted patents
- 24
- Published applications
- 23
- Inventors
- 20
- Granted in 2026 so far
- 0
- Most recent grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 4 |
| 2016 | 1 | 3 |
| 2017 | 2 | 1 |
| 2018 | 3 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 2 | 4 |
By publication year.
Technology areas
Share of 47 documents
- F02PIgnition, other than compression ignition, for internal-combustion engines33
- F02DControlling combustion engines17
- Y02TLow-carbon transport13
- G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure11
- G01MTesting static or dynamic balance of machines or structures8
- H01FMagnets7
- F02MSupplying combustion engines in general with combustible mixtures or constituents thereof5
- H01MBatteries and fuel cells5
- H01TSpark gaps5
- H02JPower supply and charging5
Recent patents
- Ignition coil assembly for combustion engine19 Aug 2025US 12,392,310 B2
- Battery assembly with controllable voltage and method related thereto22 Jul 2025US 12,368,306 B2
- Ignition system and method controlling spark ignited combustion engines24 Dec 2024US 12,173,678 B2
- Electronic circuit and capacitor discharge system comprising electronic circuit24 Jan 2023US 11,560,869 B2
- Spark plug extension18 Jan 2022US 11,225,939 B2
- Tubular structure adapted to at least partly enclose a pencil coil for internal combustion engines14 Aug 2025US 2025/0257683 A1
- Fault tolerant battery module comprising parallel branches and voltage sensing assembly5 Jun 2025US 2025/0183457 A1
- Battery module comprising parallel branches and voltage sensing assembly5 Jun 2025US 2025/0183683 A1
- Battery assemblies, battery arrangement and use for controlling current27 Mar 2025US 2025/0105652 A1
- Ignition coil assembly for combustion engine9 May 2024US 2024/0151202 A1
Most cited
By later US patents
- Method of detecting an ionization current19US 6,029,640 A2000
- Membrane type fluid pump13US 5,681,152 A1997
- Apparatus for controlling the trigger sequence in ignition systems4US 5,025,498 A1991
- Method for controlling the trigger sequence in a flywheel magneto system4US 5,419,295 A1995
- Method and device for an internal combustion engine4US 6,640,785 B22003