Where does Kokusan Denki Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kokusan Denki Co., Ltd. ranks #48,201 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 Kokusan Denki Co., Ltd. hold?

Kokusan Denki Co., Ltd. holds 5 US utility patents granted between 2015 and 2018, spanning 12 technology areas.

What is Kokusan Denki Co., Ltd.'s Innovation Score?

Kokusan Denki Co., Ltd. has an Innovation Score of 23.1 out of 100 (12th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Kokusan Denki Co., Ltd.'s patent grant rate increasing or decreasing?

Kokusan Denki Co., Ltd.'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 Kokusan Denki Co., Ltd.'s patents?

Kokusan Denki Co., Ltd.'s patents average 7.8 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 Kokusan Denki 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

Kokusan Denki Co., Ltd.

Q: What technology areas does Kokusan Denki Co., Ltd. focus on?

Kokusan Denki Co., Ltd.'s top technology area is F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines) with 2 patents, ranking #50 of 101 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 12 technology areas, recorded in grant years 2015–2018. 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: F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kokusan ranks #48,201 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 12 technology areas.

#48,201
of 49,997 US assignees by volume: 12th percentile
by Innovation Score (23.1/100): 7.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R48201 · Foreign Corporation #48,201 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #48,201/49,997
PHOTO-FINISH Kobil Systems
CPC-FOCUS F02P · 12 areas
INNOV-THIN 23.1/100
CLAIMS-SPARSE 7.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Kobil Systems GmbH (±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 Kokusan’s 23.1 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 6.2 pts (27%) Velocity 0.0 pts (0%) Breadth 12.2 pts (53%) Claim depth 4.7 pts (20%)

Qualcomm Incorporated · highest

85
Kokusan Denki · this assignee

23
3D Lighting… · lowest

7

What this shows Kokusan's Innovation Score is 23.1/100 (12th 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 Kokusan?

Each dot is one of Kokusan’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). Kokusan’s own 7.8 claims/patent is at or below the 13.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Kokusan's grants concentrate

Kokusan Denki Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 40% of grants classified under F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines). Peak complete grant year is 2017 (2 grants) versus a trough of 1 in 2015. By volume, Kokusan sits between Kobil Systems GmbH and Korro BIO, Inc..

Kobil Systems

5
Koch Pac-systeme

5
Koenigsegg Automo…

5
KOK & VAN Engelen…

5
Kone Elevators

5
Korea (Center FOR…

5
Koros Technology…

5
Korro BIO

5
Kokusan Denki ◀

5

What this shows Kokusan holds 5 patents at rank #48,132, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kokusan

By rank, the assignees closest to #48,132 in granted patent volume.

Leaders in F02P (Ignition)

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

Kokusan's Innovation Score vs. every tracked assignee

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

23 12th percentile higher than 12% 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 · 2015–2018

Grants by year

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

View data table

Kokusan Denki Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	20.0%
2016	1	20.0%
2017	2	40.0%
2018	1	20.0%

Which technologies does Kokusan Denki Co., Ltd. patent most?

F02P - Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines 2

Y02T - Climate Change Mitigation Technologies Related TO Transportation 2

F02D - Controlling Combustion Engines 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

B60Q - Arrangement OF Signalling OR Lighting Devices, THE Mounting OR Supporting Thereof OR Circuits Therefor, FOR Vehicles IN General 1

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 1

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 1

H02K - Dynamo-electric Machines 1

B60T - Vehicle Brake Control Systems OR Parts THEREOF; Brake Control Systems OR Parts Thereof, IN General ; Arrangement OF Braking Elements ON Vehicles IN GENERAL; Portable Devices FOR Preventing Unwanted Movement OF VEHICLES; Vehicle Modifications TO Facilitate Cooling OF Brakes 1

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 1

F02N - Starting OF Combustion ENGINES; Starting Aids FOR Such Engines, NOT Otherwise Provided FOR 1

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

Top 12 of 12 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

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

Kokusan Denki Co., Ltd.'s lead technology class is F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines), 40% of its portfolio - see every assignee active in that class. Explore F02P
Ranked #48,201 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kokusan Denki Co., Ltd. against Kobil Systems GmbH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.1/100 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.