Where does KEY Foundry Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), KEY Foundry Co., Ltd. ranks #7,582 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 KEY Foundry Co., Ltd. hold?

KEY Foundry Co., Ltd. holds 43 US utility patents granted between 2020 and 2024, spanning 9 technology areas.

What is KEY Foundry Co., Ltd.'s Innovation Score?

KEY Foundry Co., Ltd. has an Innovation Score of 48.0 out of 100 (top 17% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does KEY Foundry Co., Ltd. focus on?

KEY Foundry Co., Ltd.'s top technology area is H10D (Inorganic Electric Semiconductor Devices) with 33 patents, ranking #208 of 1,402 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is KEY Foundry Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for KEY Foundry Co., Ltd..

What does claim depth mean for KEY Foundry Co., Ltd.'s patents?

KEY Foundry Co., Ltd.'s patents average 17.4 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 KEY Foundry Co., 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

KEY Foundry Co., Ltd.

USPTO PatentsView assignee record - 43 granted patents across 9 technology areas, recorded in grant years 2020–2024. 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, KEY ranks #7,582 of 49,997 tracked US assignees by granted-patent volume, with 43 patents across 9 technology areas.

#7,582
of 49,997 US assignees by volume: Top 17%
by Innovation Score (48.0/100): 17.4
avg claims per patent

USPTO PatentsView assignee plate

Corpus R7582 · Foreign Corporation #7,582 · 43 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-SMALL 43 grants
UPPER-Q #7,582/49,997
PHOTO-FINISH Jiangsu Xcmg…
CPC-NARROW H10D · 9 areas
INNOV-PAR 48.0/100
CLAIMS-RICH 17.4 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2024 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Jiangsu Xcmg Construction Machinery Research Institute 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 KEY’s 48.0 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 (27%) Velocity 13.8 pts (29%) Breadth 10.6 pts (22%) Claim depth 10.5 pts (22%)

Qualcomm Incorporated · highest

85
European Molecular… · near

48
Inter-university… · near

48
KEY Foundry · this assignee

48
PIC · near

48
Toyo Tire & Rubber · near

48
3D Lighting… · lowest

7

What this shows KEY's Innovation Score is 48.0/100 (top 17% 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 KEY?

Each dot is one of KEY’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). KEY’s own 17.4 claims/patent is ABOVE the 7.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where KEY's grants concentrate

KEY Foundry Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 76.7% of grants classified under H10D (Inorganic Electric Semiconductor Devices). Peak complete grant year is 2023 (16 grants) versus a trough of 1 in 2020. By volume, KEY sits between Jiangsu Xcmg Construction Machinery Research Institute Ltd. and Meps Real-Time, Inc..

KEY's three-year grant acceleration

KEY Foundry Co., Ltd. shows 29 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.

Jiangsu Xcmg Cons…

43
Johnson Matthey D…

43
KAI R&D Center

43
Karl Leibinger Me…

43
Kito

43
Leer Group

43
Lovevery

43
Meps Real-time

43
KEY Foundry ◀

43

What this shows KEY holds 43 patents at rank #7,582, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near KEY

By rank, the assignees closest to #7,582 in granted patent volume.

Leaders in H10D (Inorganic Electric Semiconductor Devices)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for KEY, neither rank-band nor same-CPC leaders (those blocks stay above). In H10D (Inorganic Electric Semiconductor Devices), KEY ranks #208 of 1,402 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (48 here).

Inter-university Research Institute Coporation National Institutes OF Natural Sciences 48 PIC Corporation 48 Toyo Tire & Rubber Co., Ltd. 48 European Molecular Biology Laboratory 48

KEY's Innovation Score vs. every tracked assignee

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

48 Top 17% higher than 83% 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 · 2020–2024

Grants by year

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

View data table

KEY Foundry Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	1	2.3%
2021	13	30.2%
2022	10	23.3%
2023	16	37.2%
2024	3	7.0%

Which technologies does KEY Foundry Co., Ltd. patent most?

H10D - Inorganic Electric Semiconductor Devices 33

H01L - Semiconductor Devices NOT Covered BY Class H10 20

H10B - Electronic Memory Devices 15

G11C - Static Stores 13

H03K - Pulse Technique 2

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

Y10T - Technical Subjects Covered BY Former US Classification 1

H03M - CODING; DECODING; Code Conversion IN General 1

Top 9 of 9 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

KEY Foundry Co., Ltd.'s patent record in context - here's where to go next.

KEY Foundry Co., Ltd.'s lead technology class is H10D (Inorganic Electric Semiconductor Devices), 76.7% of its portfolio - see every assignee active in that class. Explore H10D
Ranked #7,582 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare KEY Foundry Co., Ltd. against Jiangsu Xcmg Construction Machinery Research Institute Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 48.0/100 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.