Inventor
MASAHIRO DOI
Inventor
JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems9%
H03KPulse technique9%
H02JElectric power networks7%
Y02TClimate change mitigation technologies related to transportation7%
B60LPropulsion of electrically-propelled vehicles5%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for5%
G01RMeasuring electric variables5%
H02HEmergency protective circuit arrangements5%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters5%
B60WConjoint control of vehicle sub-units of different type or different function4%
PatentTitleYear
12,592,105Electronic control device and method for diagnosing electronic control device202612,574,028Drive device for semiconductor switching element, driving method therefor, and power conversion device202612,384,051Robot202512,351,048Battery charging control device for vehicle202512,346,045Heater and image forming apparatus202512,341,420Electronic control device for power conversion, and power supply IC202512,319,210Electronic control device202512,316,209Method and system for diagnosing abnormality of power device drive in inverter device202512,210,304Heater and image forming apparatus202512,164,352Electronic control device and method for diagnosing electronic control device202412,093,066Electronic control device202412,080,112Electronic control device and diagnosis method of electronic control device202411,726,794Preventing supply of power to a microcomputer of an electronic control device until capacitors are discharged202311,635,472Load driving device202311,459,996Electronic control unit2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2026Patents assigned to HITACHI ASTEMO LTD (11)· patent assignee history
2022–2023Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (2)· patent assignee history
2022–2026Based in JP· patent location history
2025Patents assigned to TOSHIBA LIGHTING & TECHNOLOGY (2)· patent assignee history
2025Patents assigned to MAZDA MOTOR (1)· patent assignee history
2025Patents assigned to TOYOTA MOTOR CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI ASTEMO LTD | 11 | 2022–2026 |
| HITACHI AUTOMOTIVE SYSTEMS LTD | 2 | 2022–2023 |
| TOSHIBA LIGHTING & TECHNOLOGY | 2 | 2025 |
| MAZDA MOTOR | 1 | 2025 |
| TOYOTA MOTOR CO LTD | 1 | 2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| JP | 15 | 2022–2026 |