Where does Transphorm Japan, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Transphorm Japan, Inc. ranks #15,014 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 Transphorm Japan, Inc. hold?

Transphorm Japan, Inc. holds 20 US utility patents granted between 2015 and 2017, spanning 4 technology areas.

What is Transphorm Japan, Inc.'s Innovation Score?

Transphorm Japan, Inc. has an Innovation Score of 25.6 out of 100 (18th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Transphorm Japan, Inc. focus on?

Transphorm Japan, Inc.'s top technology area is H10D (Inorganic Electric Semiconductor Devices) with 20 patents, ranking #273 of 1,402 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is Transphorm Japan, Inc.'s patent grant rate increasing or decreasing?

Transphorm Japan, Inc.'s recent grant velocity is -100% 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 Transphorm Japan, Inc.'s patents?

Transphorm Japan, Inc.'s patents average 13.3 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 Transphorm Japan, Inc. 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

Transphorm Japan, Inc.

USPTO PatentsView assignee record - 20 granted patents across 4 technology areas, recorded in grant years 2015–2017. 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: H10D (Inorganic Electric Semiconductor Devices).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Transphorm ranks #15,014 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 4 technology areas.

#15,014
of 49,997 US assignees by volume: 18th percentile
by Innovation Score (25.6/100): 13.3
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15014 · Foreign Corporation #15,014 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 20 grants
MID-PACK #15,014/49,997
PHOTO-FINISH Tokai Carbon Korea
CPC-NARROW H10D · 4 areas
INNOV-THIN 25.6/100
CLAIMS-RICH 13.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Tokai Carbon Korea Co., Ltd. (±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 Transphorm’s 25.6 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 10.5 pts (41%) Velocity 0.0 pts (0%) Breadth 7.1 pts (28%) Claim depth 8.0 pts (31%)

Qualcomm Incorporated · highest

85
Transphorm Japan · this assignee

26
3D Lighting… · lowest

7

What this shows Transphorm's Innovation Score is 25.6/100 (18th percentile 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 Transphorm?

Each dot is one of Transphorm’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). Transphorm’s own 13.3 claims/patent is at or below the 19.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Transphorm's grants concentrate

Transphorm Japan, Inc. is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under H10D (Inorganic Electric Semiconductor Devices). Peak complete grant year is 2015 (12 grants) versus a trough of 4 in 2016. By volume, Transphorm sits between Tokai Carbon Korea Co., Ltd. and Umano Medical Inc..

Tokai Carbon Korea

20
Toly Management

20
Trackthings

20
Trackingpoint

20
Tula Health

20
Turbett Surgical

20
Tyber Medical

20
Umano Medical

20
Transphorm Japan ◀

20

What this shows Transphorm holds 20 patents at rank #15,011, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Transphorm

By rank, the assignees closest to #15,011 in granted patent volume.

Leaders in H10D (Inorganic Electric Semiconductor Devices)

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

Transphorm's Innovation Score vs. every tracked assignee

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

26 18th percentile higher than 18% 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 · 2015–2017

Grants by year

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

View data table

Transphorm Japan, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	12	60.0%
2016	4	20.0%
2017	4	20.0%

Which technologies does Transphorm Japan, Inc. patent most?

H10D - Inorganic Electric Semiconductor Devices 20

H01L - Semiconductor Devices NOT Covered BY Class H10 18

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 5

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 3

Top 4 of 4 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

Transphorm Japan, Inc.'s patent record in context - here's where to go next.

Transphorm Japan, Inc.'s lead technology class is H10D (Inorganic Electric Semiconductor Devices), 100% of its portfolio - see every assignee active in that class. Explore H10D
Ranked #15,014 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Transphorm Japan, Inc. against Tokai Carbon Korea Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 25.6/100 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.