Diagnostic apparatus and diagnostic method for rotational angle sensor, and control apparatus for actuator
US-12392646-B2 · Aug 19, 2025 · US
Hitachi Automotive Systems Ltd patents
Hitachi Automotive Systems Ltd holds 4,278 patents in our database, with recent filings and technology areas summarized below.
| Metric | Value |
|---|---|
| Total patents | 4,278 |
| Recent patents | 95 |
| First publication | Jan 1, 2015 |
| Latest publication | Aug 19, 2025 |
Filing trend
Year-over-year patent counts for this assignee.
Recent patents
Latest publications where this party is an assignee.
Physical quantity detection device
US-12298164-B2 · May 13, 2025 · US
Vehicle control device and characteristic estimation method
US-12291263-B2 · May 6, 2025 · US
In-vehicle electronic control system
US-12246735-B2 · Mar 11, 2025 · US
Coil forming device and coil of a rotating electric device
US-12237733-B2 · Feb 25, 2025 · US
Notable patents
Representative or frequently cited publications from precomputed assignee stats.
Diagnostic apparatus and diagnostic method for rotational angle sensor, and control apparatus for actuator
US-12392646-B2 · Aug 19, 2025 · US
Physical quantity detection device
US-12298164-B2 · May 13, 2025 · US
Vehicle control device and characteristic estimation method
US-12291263-B2 · May 6, 2025 · US
In-vehicle electronic control system
US-12246735-B2 · Mar 11, 2025 · US
Coil forming device and coil of a rotating electric device
US-12237733-B2 · Feb 25, 2025 · US
Top CPC classifications
Most common classification codes in this portfolio.
| CPC | Patents |
|---|---|
| Y02T10/70 | 276 |
| Y02E60/10 | 249 |
| Y02T10/40 | 228 |
| H02M7/003 | 181 |
| G01F1/6842 | 160 |
Technology areas
Mapped technology topics for this assignee.
| Technology | Patents |
|---|---|
| Operations & Transport | 1,886 |
| Electricity | 1,864 |
| Mechanical Engineering | 1,583 |
| Physics | 1,422 |
| Cross-Sectional Technologies | 956 |
| Chemistry & Metallurgy | 36 |
| Fixed Constructions | 4 |
| Human Necessities | 1 |
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Frequently asked questions
Answers are generated from the same data shown on this page.
- How many patents does Hitachi Automotive Systems Ltd have in patentsdb?
- Hitachi Automotive Systems Ltd is linked to 4,278 publications as assignee in our database.
- What technology areas does Hitachi Automotive Systems Ltd patent most?
- Top mapped technology areas by patent count: Operations & Transport (1,886); Electricity (1,864); Mechanical Engineering (1,583).
- Is Hitachi Automotive Systems Ltd's patent activity growing?
- In our data, assignee counts were 52 in 2024 and 5 in 2025 (lower year over year).
- What are recent patents assigned to Hitachi Automotive Systems Ltd?
- See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.