Where does Crrc Tangshan Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Crrc Tangshan Co., Ltd. ranks #12,395 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 Crrc Tangshan Co., Ltd. hold?

Crrc Tangshan Co., Ltd. holds 24 US utility patents granted between 2017 and 2025, spanning 22 technology areas.

What is Crrc Tangshan Co., Ltd.'s Innovation Score?

Crrc Tangshan Co., Ltd. has an Innovation Score of 52.3 out of 100 (top 10% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Crrc Tangshan Co., Ltd.'s patent grant rate increasing or decreasing?

Crrc Tangshan Co., Ltd.'s recent grant velocity is +350% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Crrc Tangshan Co., Ltd.'s patents?

Crrc Tangshan Co., Ltd.'s patents average 15.1 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 Crrc Tangshan 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

Crrc Tangshan Co., Ltd.

Q: What technology areas does Crrc Tangshan Co., Ltd. focus on?

Crrc Tangshan 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 11 patents. Grants appear in 22 CPC subclasses total.

USPTO PatentsView assignee record - 24 granted patents across 22 technology areas, recorded in grant years 2017–2025. 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: 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 by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Crrc ranks #12,395 of 49,997 tracked US assignees by granted-patent volume, with 24 patents across 22 technology areas.

#12,395
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.3/100): 15.1
avg claims per patent: +350%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R12395 · Foreign Corporation #12,395 · 24 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 24 grants
UPPER-Q #12,395/49,997
PHOTO-FINISH Cal Poly
CPC-FOCUS B61F · 22 areas
INNOV-PAR 52.3/100
CLAIMS-RICH 15.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +350% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cal Poly Corporation (±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.

Qualcomm Incorporated · highest

85
Crrc Tangshan · this assignee

52
Erbe Elektromedizin · near

52
Pentair Flow · near

52
Yanmar Holdings · near

52
Cue Biopharma · near

52
3D Lighting… · lowest

7

What this shows Crrc's Innovation Score is 52.3/100 (top 10% 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.

Where Crrc's grants concentrate

Crrc Tangshan Co., Ltd. is a focused PatentsView assignee: 22 CPC subclasses with 45.8% of grants classified under 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 ). Peak complete grant year is 2022 (7 grants) versus a trough of 1 in 2020. By volume, Crrc sits between China National Offshore OIL Corporation and Catalyst Medium Four, Inc..

Crrc's three-year grant acceleration

Crrc Tangshan Co., Ltd. shows 14 grants in 2022–2024 against only 6 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

China National Of…

24
Claas Saulgau

24
Constellium Neuf-…

24
Copreci S COOP

24
Cyngn

24
Cal Poly

24
Cassidian SAS

24
Catalyst Medium F…

24
Crrc Tangshan ◀

24

What this shows Crrc holds 24 patents at rank #12,386, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Crrc

By rank, the assignees closest to #12,386 in granted patent volume.

Leaders in B61F (Rail Vehicle Suspensions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Crrc, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (52 here).

Pentair Flow Technologies, LLC 52 Erbe Elektromedizin GmbH 52 Yanmar Holdings Co., Ltd. 52 Cue Biopharma, Inc. 52

Crrc's Innovation Score vs. every tracked assignee

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

52 Top 10% higher than 90% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Crrc Tangshan Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	2	8.3%
2019	2	8.3%
2020	1	4.2%
2021	3	12.5%
2022	7	29.2%
2023	1	4.2%
2024	6	25.0%
2025partial year	2	8.3%

Which technologies does Crrc Tangshan 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 11

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 7

B61D - Body Details OR Kinds OF Railway Vehicles 6

B61L - Guiding Railway TRAFFIC; Ensuring THE Safety OF Railway Traffic 4

B61H - Brakes OR Other Retarding Devices Specially Adapted FOR Rail VEHICLES; Arrangement OR Disposition Thereof IN Rail Vehicles 4

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

Y02T - Climate Change Mitigation Technologies Related TO Transportation 4

B61C - LOCOMOTIVES; Motor Railcars 3

B61B - Railway SYSTEMS; Equipment Therefor NOT Otherwise Provided FOR 2

B61G - COUPLINGS; Draught AND Buffing Appliances 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

B61K - Auxiliary Equipment Specially Adapted FOR Railways, NOT Otherwise Provided FOR 1

E01B - Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds 1

E06B - Fixed OR Movable Closures FOR Openings IN Buildings, Vehicles, Fences OR Like Enclosures IN General, e.g. Doors, Windows, Blinds, Gates 1

Top 15 of 22 technology areas

Where it ranks

Overall rank by patents

#12,395

of 49,997 tracked assignees

Innovation Score

52.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

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

Crrc Tangshan Co., Ltd.'s lead technology class 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 ), 45.8% of its portfolio - see every assignee active in that class. Explore B61F
Ranked #12,395 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Crrc Tangshan Co., Ltd. against China National Offshore OIL Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.3/100 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.