USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kokusai Electric Corporation

USPTO PatentsView assignee record - 587 granted patents across 52 technology areas, active 2018–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01L (SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

587

Total patents granted

CPC technology areas

13.6

Avg claims per patent

+639%

5-year filing velocity

The verdict

Kokusai holds 587 US patents across 52 technology areas, rank #781 of 50,000 tracked assignees.

#781
of 50,000 US assignees by volume: Top 2%
by Innovation Score (62.7/100): 13.6
avg claims per patent: +639%
filing velocity, last 5 yrs

Portfolio overview

Kokusai Electric Corporation has been granted 587 US utility patents between 2018 and 2025, placing Kokusai Electric Corporation at rank #781 across all assignees tracked by PlainPatent. This portfolio spans 52 distinct Cooperative Patent Classification (CPC) subclasses, averaging 13.6 claims per patent with primary concentration in H01L (SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10). As a Foreign Corporation, Kokusai Electric Corporation is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Kokusai sits between Carnegie Mellon University (589 patents, rank #777) and Agilent Technologies, Inc. (583 patents, rank #785) - the closest US assignees by grant volume. The composite Innovation Score of 62.7/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 517 grants, compared with 70 in the 2015–2019 window, a +639% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Kokusai Electric Corporation's 13.6 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 52 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kokusai Electric Corporation against peers pursuing similar technology classes.

Carnegie Mellon U…

589
Showa Denko K K

589
Tohoku University

589
Kyoto University

588
Phoenix Contact &…

587
Kokusai Electric ◀

587
PPG Industries Oh…

586
North Carolina St…

585
Agilent

583

What this shows Kokusai holds 587 patents at rank #781, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kokusai

By rank, the assignees closest to #781 in granted patent volume.

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

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

Kokusai's Innovation Score vs. every tracked assignee

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

63 Top 2% higher than 98% of 50,000 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 · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Kokusai Electric Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	5	0.9%
2019	65	11.1%
2020	78	13.3%
2021	91	15.5%
2022	85	14.5%
2023	72	12.3%
2024	107	18.2%
2025	84	14.3%

Which technologies does Kokusai Electric Corporation patent most?

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 476

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 375

H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 87

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 28

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 16

H05H - PLASMA TECHNIQUE ; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS 16

H10D - INORGANIC ELECTRIC SEMICONDUCTOR DEVICES 14

H10B - ELECTRONIC MEMORY DEVICES 10

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 9

G01K - MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 8

B08B - CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 8

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 7

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 7

G06F - ELECTRIC DIGITAL DATA PROCESSING 5

B01D - SEPARATION 4

Top 15 of 52 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#781

Across all tracked assignees

Innovation Score

62.7 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Kokusai Electric Corporation hold?

Kokusai Electric Corporation holds 587 US granted patents filed between 2018 and 2025, spanning 52 technology areas.

What is Kokusai Electric Corporation's Innovation Score?

Kokusai Electric Corporation has an Innovation Score of 62.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kokusai Electric Corporation focus on?

Kokusai Electric Corporation's top technology area is H01L (SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10) with 476 patents. The company has filed patents in 52 CPC subclasses total.

Is Kokusai Electric Corporation's patent filing rate increasing or decreasing?

Kokusai Electric Corporation's recent filing velocity is +639% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Kokusai Electric Corporation's patents?

Kokusai Electric Corporation's patents average 13.6 claims each. This falls within the standard range, providing solid legal coverage.

How is the Kokusai Electric Corporation 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.

How to use this portfolio

Kokusai's 587 grants land it in the top 2% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Kokusai ranks #781 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01L - see who else leads that technology area. H01L leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

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

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.