USPTO 2015–2025 USPTO PatentsView Foreign Corporation

CRRC Qingdao Sifang Co., Ltd.

USPTO PatentsView assignee record - 91 granted patents across 69 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

12.9

Avg claims per patent

+125%

5-year filing velocity

The verdict

CRRC holds 91 US patents across 69 technology areas, rank #3,960 of 50,000 tracked assignees.

#3,960
of 50,000 US assignees by volume: Top 6%
by Innovation Score (56.5/100): 12.9
avg claims per patent: +125%
filing velocity, last 5 yrs

Portfolio overview

CRRC Qingdao Sifang Co., Ltd. has been granted 91 US utility patents between 2017 and 2025, placing CRRC Qingdao Sifang Co., Ltd. at rank #3,960 across all assignees tracked by PlainPatent. This portfolio spans 69 distinct Cooperative Patent Classification (CPC) subclasses, averaging 12.9 claims per patent with primary concentration in B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES). As a Foreign Corporation, CRRC Qingdao Sifang Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, CRRC sits between Board Of Trustees Of Southern Illinois University (91 patents, rank #3,956) and E.g.o. Elektro-geraetebau Gmbh (91 patents, rank #3,964) - the closest US assignees by grant volume. The composite Innovation Score of 56.5/100 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 63 grants, compared with 28 in the 2015–2019 window, a +125% 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 Qingdao Sifang Co., Ltd.'s 12.9 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 69 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark CRRC Qingdao Sifang Co., Ltd. against peers pursuing similar technology classes.

Board of Trustees…

91
Bruker Biospin

91
Canoo

91
Colopl

91
Dainichiseika Col…

91
DANA Italia S R L

91
Dirtt Environment…

91
E G O Elektro-ger…

91
CRRC Qingdao Sifa… ◀

91

What this shows CRRC holds 91 patents at rank #3,960, 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 #3,960 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)

56 Top 6% higher than 94% 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 Qingdao Sifang Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	6	6.6%
2018	10	11.0%
2019	12	13.2%
2020	6	6.6%
2021	14	15.4%
2022	16	17.6%
2023	10	11.0%
2024	13	14.3%
2025	4	4.4%

Which technologies does CRRC Qingdao Sifang Co., Ltd. patent most?

B61D - BODY DETAILS OR KINDS OF RAILWAY VEHICLES 33

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 31

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 16

B61L - GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 13

B61C - LOCOMOTIVES; MOTOR RAILCARS 12

B61B - RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR 11

G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR 8

B61G - COUPLINGS; DRAUGHT AND BUFFING APPLIANCES 7

E01B - PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS 4

F16F - SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION 4

H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 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

B61H - BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES 4

B60R - VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR 3

Top 15 of 69 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#3,960

Across all tracked assignees

Innovation Score

56.5 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 Qingdao Sifang Co., Ltd. hold?

CRRC Qingdao Sifang Co., Ltd. holds 91 US granted patents filed between 2017 and 2025, spanning 69 technology areas.

What is CRRC Qingdao Sifang Co., Ltd.'s Innovation Score?

CRRC Qingdao Sifang Co., Ltd. has an Innovation Score of 56.5 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 Qingdao Sifang Co., Ltd. focus on?

CRRC Qingdao Sifang Co., Ltd.'s top technology area is B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES) with 33 patents. The company has filed patents in 69 CPC subclasses total.

Is CRRC Qingdao Sifang Co., Ltd.'s patent filing rate increasing or decreasing?

CRRC Qingdao Sifang Co., Ltd.'s recent filing velocity is +125% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for CRRC Qingdao Sifang Co., Ltd.'s patents?

CRRC Qingdao Sifang Co., Ltd.'s patents average 12.9 claims each. This falls within the standard range, providing solid legal coverage.

How is the CRRC Qingdao Sifang 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 91 grants land it in the top 6% 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 #3,960 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.