USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Central Japan Railway Comany

USPTO PatentsView assignee record - 66 granted patents across 48 technology areas, active 2015–2022. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. 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 Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.3

Avg claims per patent

-57%

5-year filing velocity

The verdict

Central holds 66 US patents across 48 technology areas, rank #5,201 of 50,000 tracked assignees.

#5,201
of 50,000 US assignees by volume: Top 24%
by Innovation Score (44.9/100): 7.3
avg claims per patent: -57%
filing velocity, last 5 yrs

Portfolio overview

Central Japan Railway Comany has been granted 66 US utility patents between 2015 and 2022, placing Central Japan Railway Comany at rank #5,201 across all assignees tracked by PlainPatent. This portfolio spans 48 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.3 claims per patent with primary concentration in 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). As a Foreign Corporation, Central Japan Railway Comany is one of the more focused assignees in the PatentsView dataset. By volume, Central sits between Aerojet Rocketdyne, Inc. (66 patents, rank #5,197) and Ecole Polytechnique (66 patents, rank #5,205) - the closest US assignees by grant volume. The composite Innovation Score of 44.9/100 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 20 grants, compared with 46 in the 2015–2019 window, a -57% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Central Japan Railway Comany's 7.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 48 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Central Japan Railway Comany against peers pursuing similar technology classes.

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.

Central's Innovation Score vs. every tracked assignee

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

45 Top 24% higher than 76% 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 · 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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#5,201

Across all tracked assignees

Innovation Score

44.9 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 Central Japan Railway Comany hold?

Central Japan Railway Comany holds 66 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 48 CPC subclasses total.

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

Central Japan Railway Comany's recent filing velocity is -57% compared to the prior five-year period. Filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Central's 66 grants land it in the top 24% 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 - Central ranks #5,201 of 50,000. Top 50 holders
Most of this portfolio concentrates in B60L - see who else leads that technology area. B60L 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 by PlainPatent 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.