USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kawasaki Railcar Manufacturing Co., Ltd.

USPTO PatentsView assignee record - 19 granted patents across 21 technology areas, active 2022–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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 ).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

10.6

Avg claims per patent

5-year filing velocity

The verdict

Kawasaki holds 19 US patents across 21 technology areas, rank #15,402 of 50,000 tracked assignees.

#15,402
of 50,000 US assignees by volume: Top 9%
by Innovation Score (52.9/100): 10.6
avg claims per patent

Portfolio overview

Kawasaki Railcar Manufacturing Co., Ltd. has been granted 19 US utility patents between 2022 and 2025, placing Kawasaki Railcar Manufacturing Co., Ltd. at rank #15,402 across all assignees tracked by PlainPatent. This portfolio spans 21 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.6 claims per patent with primary concentration in 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 ). As a Foreign Corporation, Kawasaki Railcar Manufacturing Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Kawasaki sits between Joint Development, Inc. (19 patents, rank #15,398) and Kai Concepts, Llc (19 patents, rank #15,406) - the closest US assignees by grant volume. The composite Innovation Score of 52.9/100 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. Historical data spans 2022 through 2025, with 19 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. Kawasaki Railcar Manufacturing Co., Ltd.'s 10.6 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 21 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kawasaki Railcar Manufacturing Co., Ltd. against peers pursuing similar technology classes.

Joint Development

19
Joint Stock “Scie…

19
Jumpcloud

19
Kaken Pharmaceuti…

19
Kodacloud

19
KVH Industries

19
Kylin Sanitary Te…

19
Kai Concepts

19
Kawasaki Railcar… ◀

19

What this shows Kawasaki holds 19 patents at rank #15,402, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kawasaki

By rank, the assignees closest to #15,402 in granted patent volume.

Leaders in B61F (RAIL Vehicle Suspensions)

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

Kawasaki's Innovation Score vs. every tracked assignee

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

53 Top 9% higher than 91% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Kawasaki Railcar Manufacturing Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	6	31.6%
2023	8	42.1%
2024	3	15.8%
2025	2	10.5%

Which technologies does Kawasaki Railcar Manufacturing Co., Ltd. patent most?

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 10

B61D - BODY DETAILS OR KINDS OF RAILWAY VEHICLES 4

B61K - AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR 3

B61L - GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 2

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 2

F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 2

B23Q - DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING ; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT 1

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1

Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS 1

E04F - FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS 1

G01C - MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 1

E01B - PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS 1

B60H - ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES 1

F16C - SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 1

G01K - MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 1

Top 15 of 21 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Where it ranks

Overall rank by patents

#15,402

Across all tracked assignees

Innovation Score

52.9 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 Kawasaki Railcar Manufacturing Co., Ltd. hold?

Kawasaki Railcar Manufacturing Co., Ltd. holds 19 US granted patents filed between 2022 and 2025, spanning 21 technology areas.

What is Kawasaki Railcar Manufacturing Co., Ltd.'s Innovation Score?

Kawasaki Railcar Manufacturing Co., Ltd. has an Innovation Score of 52.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kawasaki Railcar Manufacturing Co., Ltd. focus on?

Kawasaki Railcar Manufacturing Co., Ltd.'s top technology area is 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) with 10 patents. The company has filed patents in 21 CPC subclasses total.

Is Kawasaki Railcar Manufacturing Co., Ltd.'s patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Kawasaki Railcar Manufacturing Co., Ltd..

What does claim depth mean for Kawasaki Railcar Manufacturing Co., Ltd.'s patents?

Kawasaki Railcar Manufacturing Co., Ltd.'s patents average 10.6 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Kawasaki Railcar Manufacturing 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.

How to use this portfolio

Kawasaki's 19 grants land it in the top 9% 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 - Kawasaki ranks #15,402 of 50,000. Top 50 holders
Most of this portfolio concentrates in B61F - see who else leads that technology area. B61F 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.