Where does Central Japan Railway Comany rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Central Japan Railway Comany ranks #5,202 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 Central Japan Railway Comany hold?

Central Japan Railway Comany holds 66 US utility patents granted between 2015 and 2022, spanning 48 technology areas.

What is Central Japan Railway Comany's Innovation Score?

Central Japan Railway Comany has an Innovation Score of 44.9 out of 100 (top 24% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Central Japan Railway Comany's patent grant rate increasing or decreasing?

Central Japan Railway Comany's recent grant velocity is -57% 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 Central Japan Railway Comany's patents?

Central Japan Railway Comany's patents average 7.3 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 Central Japan Railway Comany 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

Central Japan Railway Comany

Q: What technology areas does Central Japan Railway Comany focus on?

Central Japan Railway Comany's top technology area is 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) with 18 patents, ranking #149 of 1,396 assignees active in that subclass. Grants appear in 48 CPC subclasses total.

USPTO PatentsView assignee record - 66 granted patents across 48 technology areas, recorded in grant years 2015–2022. 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: B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Central ranks #5,202 of 49,997 tracked US assignees by granted-patent volume, with 66 patents across 48 technology areas.

#5,202
of 49,997 US assignees by volume: Top 24%
by Innovation Score (44.9/100): 7.3
avg claims per patent: -57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5202 · Foreign Corporation #5,202 · 66 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 66 grants
UPPER-Q #5,202/49,997
PHOTO-FINISH Aerojet Rocketdyne
CPC-WIDE B60L · 48 areas
INNOV-PAR 44.9/100
CLAIMS-SPARSE 7.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Aerojet Rocketdyne, 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 Central’s 44.9 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 14.5 pts (32%) Velocity 1.5 pts (3%) Breadth 24.5 pts (55%) Claim depth 4.4 pts (10%)

Qualcomm Incorporated · highest

85
Central Japan… · this assignee

45
Hobart Brothers · near

45
Reata Pharmaceutical… · near

45
Sophia School · near

45
Vacon OY · near

45
3D Lighting… · lowest

7

What this shows Central's Innovation Score is 44.9/100 (top 24% 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 Central?

Each dot is one of Central’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). Central’s own 7.3 claims/patent is at or below the 14.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Central's grants concentrate

Central Japan Railway Comany is a focused PatentsView assignee: 48 CPC subclasses with 27.3% of grants classified under B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU). Peak complete grant year is 2016 (19 grants) versus a trough of 4 in 2018. By volume, Central sits between Aerojet Rocketdyne, Inc. and Ecole Polytechnique.

Central's three-year grant acceleration

From 2019–2021 to 2022–2024, Central Japan Railway Comany moved from 22 to 5 grants (0.23x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Aerojet Rocketdyne

66
Babyliss Faco SRL

66
Bal Seal Engineer…

66
Bridgeport Fittin…

66
CSL

66
Canon U S Life Sc…

66
Dionex Softron

66
Ecole Polytechniq…

66
Central Japan Rai… ◀

66

What this shows Central holds 66 patents at rank #5,201, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Central

By rank, the assignees closest to #5,201 in granted patent volume.

Leaders in B60L (Propulsion OF Electrically-propelled Vehicles)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Central, neither rank-band nor same-CPC leaders (those blocks stay above). In B60L (Propulsion OF Electrically-propelled Vehicles), Central ranks #149 of 1,396 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (45 here).

Hobart Brothers LLC 45 Reata Pharmaceuticals Holdings, LLC 45 Vacon OY 45 Sophia School Corporation 45

Similar claim depth

Nearest assignees by average claims per patent (7.3 here).

HAI Robotics Co., Ltd. 7.3 avg Fanuc Corporation 7.3 avg Sunrex Technology Corp. 7.3 avg Komori Corporation 7.3 avg

Central's Innovation Score vs. every tracked assignee

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

45 Top 24% higher than 76% 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 · 2015–2022

Grants by year

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

View data table

Central Japan Railway Comany patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	8	12.1%
2016	19	28.8%
2017	8	12.1%
2018	4	6.1%
2019	7	10.6%
2020	10	15.2%
2021	5	7.6%
2022	5	7.6%

Which technologies does Central Japan Railway Comany patent most?

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 18

Y02T - Climate Change Mitigation Technologies Related TO Transportation 14

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 13

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 9

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 8

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 5

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 5

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 4

B60N - Seats Specially Adapted FOR VEHICLES; Vehicle Passenger Accommodation NOT Otherwise Provided FOR 3

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

B61H - Brakes OR Other Retarding Devices Specially Adapted FOR Rail VEHICLES; Arrangement OR Disposition Thereof IN Rail Vehicles 3

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 3

B61D - Body Details OR Kinds OF Railway Vehicles 3

B61F - Rail Vehicle Suspensions, e.g. Underframes, Bogies OR Arrangements OF Wheel AXLES; Rail Vehicles FOR USE ON Tracks OF Different WIDTH; Preventing Derailing OF Rail VEHICLES; Wheel Guards, Obstruction Removers OR THE Like FOR Rail Vehicles 3

B61L - Guiding Railway TRAFFIC; Ensuring THE Safety OF Railway Traffic 3

Top 15 of 48 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

Central Japan Railway Comany's patent record in context - here's where to go next.

Central Japan Railway Comany's lead technology class is B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU), 27.3% of its portfolio - see every assignee active in that class. Explore B60L
Ranked #5,202 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Central Japan Railway Comany against Aerojet Rocketdyne, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.9/100 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.