Where does Hitachi Power Semiconductor Device, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Power Semiconductor Device, Ltd. ranks #7,565 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Hitachi Power Semiconductor Device, Ltd. hold?

Hitachi Power Semiconductor Device, Ltd. holds 43 US utility patents granted between 2015 and 2025, spanning 14 technology areas.

What is Hitachi Power Semiconductor Device, Ltd.'s Innovation Score?

Hitachi Power Semiconductor Device, Ltd. has an Innovation Score of 38.5 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hitachi Power Semiconductor Device, Ltd. focus on?

Hitachi Power Semiconductor Device, Ltd.'s top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 25 patents, ranking #512 of 3,373 assignees active in that subclass. Grants appear in 14 CPC subclasses total.

Is Hitachi Power Semiconductor Device, Ltd.'s patent grant rate increasing or decreasing?

Hitachi Power Semiconductor Device, Ltd.'s recent grant velocity is -10% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Hitachi Power Semiconductor Device, Ltd.'s patents?

Hitachi Power Semiconductor Device, Ltd.'s patents average 12.4 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Hitachi Power Semiconductor Device, Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi Power Semiconductor Device, Ltd.

USPTO PatentsView assignee record - 43 granted patents across 14 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi ranks #7,565 of 49,997 tracked US assignees by granted-patent volume, with 43 patents across 14 technology areas.

#7,565
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.5/100): 12.4
avg claims per patent: -10%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7565 · Foreign Corporation #7,565 · 43 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 43 grants
UPPER-Q #7,565/49,997
PHOTO-FINISH Glasstech
CPC-FOCUS H01L · 14 areas
INNOV-THIN 38.5/100
CLAIMS-RICH 12.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -10% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Glasstech, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Hitachi’s 38.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 13.1 pts (34%) Velocity 4.8 pts (12%) Breadth 13.2 pts (34%) Claim depth 7.5 pts (19%)

Qualcomm Incorporated · highest

85
Hitachi Power… · this assignee

39
Kayaba Industry · near

39
Zora Biosciences OY · near

39
Maui Imaging · near

39
Neuwave Medical · near

39
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 38.5/100 (top 41% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Hitachi?

Each dot is one of Hitachi’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Hitachi’s own 12.4 claims/patent is at or below the 16.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Hitachi vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Hitachi's grants concentrate

Hitachi Power Semiconductor Device, Ltd. is a focused PatentsView assignee: 14 CPC subclasses with 58.1% of grants classified under H01L (Semiconductor Devices NOT Covered BY Class H10). Peak complete grant year is 2019 (6 grants) versus a trough of 2 in 2016. By volume, Hitachi sits between Glasstech, Inc. and I.C. Medical, Inc..

Hitachi's three-year grant acceleration

Hitachi Power Semiconductor Device, Ltd. shows 10 grants in 2022–2024 against only 14 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Glasstech

43
H M

43
Halo2cloud

43
Hifi Engineering

43
Hitachi Solutions

43
Higher Ground

43
Horizon Internati…

43
I C Medical

43
Hitachi Power Sem… ◀

43

What this shows Hitachi holds 43 patents at rank #7,564, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi

By rank, the assignees closest to #7,564 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

Other assignees with the most granted patents in Hitachi's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hitachi, neither rank-band nor same-CPC leaders (those blocks stay above). In H01L (Semiconductor Devices NOT Covered BY Class H10), Hitachi ranks #512 of 3,373 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (39 here).

Kayaba Industry Co., Ltd. 39 Zora Biosciences OY 39 Maui Imaging, Inc. 39 Neuwave Medical, Inc. 39

Hitachi's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

39 Top 41% higher than 59% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Hitachi Power Semiconductor Device, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	11.6%
2016	2	4.7%
2017	2	4.7%
2018	5	11.6%
2019	6	14.0%
2020	3	7.0%
2021	5	11.6%
2022	4	9.3%
2023	3	7.0%
2024	3	7.0%
2025partial year	5	11.6%

Which technologies does Hitachi Power Semiconductor Device, Ltd. patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 25

H10D - Inorganic Electric Semiconductor Devices 23

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 18

H03K - Pulse Technique 12

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 6

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 5

H02K - Dynamo-electric Machines 3

H02H - Emergency Protective Circuit Arrangements 2

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 2

A61B - DIAGNOSIS; SURGERY; Identification 2

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 1

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 1

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 1

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 1

Top 14 of 14 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Hitachi Power Semiconductor Device, Ltd.'s patent record in context - here's where to go next.

Hitachi Power Semiconductor Device, Ltd.'s lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 58.1% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #7,565 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Power Semiconductor Device, Ltd. against Glasstech, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.