USPTO 2015–2025 USPTO PatentsView Foreign Corporation

CRRC Qiqihar Rolling Stock Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 9 technology areas, active 2017–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

14.2

Avg claims per patent

+75%

5-year filing velocity

The verdict

CRRC holds 11 US patents across 9 technology areas, rank #24,093 of 50,000 tracked assignees.

#24,093
of 50,000 US assignees by volume: Top 66%
by Innovation Score (30.4/100): 14.2
avg claims per patent: +75%
filing velocity, last 5 yrs

Portfolio overview

CRRC Qiqihar Rolling Stock Co., Ltd. has been granted 11 US utility patents between 2017 and 2025, placing CRRC Qiqihar Rolling Stock Co., Ltd. at rank #24,093 across all assignees tracked by PlainPatent. This portfolio spans 9 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.2 claims per patent with primary concentration in B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES). As a Foreign Corporation, CRRC Qiqihar Rolling Stock Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, CRRC sits between CRIA Inc. (11 patents, rank #24,089) and CTC Analytics Ag (11 patents, rank #24,097) - the closest US assignees by grant volume. The composite Innovation Score of 30.4/100 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 7 grants, compared with 4 in the 2015–2019 window, a +75% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. CRRC Qiqihar Rolling Stock Co., Ltd.'s 14.2 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 9 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark CRRC Qiqihar Rolling Stock Co., Ltd. against peers pursuing similar technology classes.

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What this shows CRRC holds 11 patents at rank #24,093, 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 #24,093 in granted patent volume.

Leaders in B61D (BODY Details OR Kinds OF Railway Vehicles)

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

CRRC's Innovation Score vs. every tracked assignee

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

30 Top 66% higher than 34% 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 · 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 Qiqihar Rolling Stock Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	9.1%
2018	2	18.2%
2019	1	9.1%
2020	4	36.4%
2023	1	9.1%
2024	1	9.1%
2025	1	9.1%

Which technologies does CRRC Qiqihar Rolling Stock Co., Ltd. patent most?

B61D - BODY DETAILS OR KINDS OF RAILWAY VEHICLES 4

B61G - COUPLINGS; DRAUGHT AND BUFFING APPLIANCES 4

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

B60P - VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS 2

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

B63B - SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 1

E05Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF 1

E05F - DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING 1

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 1

Top 9 of 9 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#24,093

Across all tracked assignees

Innovation Score

30.4 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 CRRC Qiqihar Rolling Stock Co., Ltd. hold?

CRRC Qiqihar Rolling Stock Co., Ltd. holds 11 US granted patents filed between 2017 and 2025, spanning 9 technology areas.

What is CRRC Qiqihar Rolling Stock Co., Ltd.'s Innovation Score?

CRRC Qiqihar Rolling Stock Co., Ltd. has an Innovation Score of 30.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does CRRC Qiqihar Rolling Stock Co., Ltd. focus on?

CRRC Qiqihar Rolling Stock Co., Ltd.'s top technology area is B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES) with 4 patents. The company has filed patents in 9 CPC subclasses total.

Is CRRC Qiqihar Rolling Stock Co., Ltd.'s patent filing rate increasing or decreasing?

CRRC Qiqihar Rolling Stock Co., Ltd.'s recent filing velocity is +75% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for CRRC Qiqihar Rolling Stock Co., Ltd.'s patents?

CRRC Qiqihar Rolling Stock Co., Ltd.'s patents average 14.2 claims each. This falls within the standard range, providing solid legal coverage.

How is the CRRC Qiqihar Rolling Stock 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

CRRC's 11 grants land it in the top 66% 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 - CRRC ranks #24,093 of 50,000. Top 50 holders
Most of this portfolio concentrates in B61D - see who else leads that technology area. B61D 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.