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

According to USPTO PatentsView (2015–2025 granted utility patents), Crrc Qingdao Sifang Co., Ltd. ranks #3,960 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 Qingdao Sifang Co., Ltd. hold?

Crrc Qingdao Sifang Co., Ltd. holds 91 US utility patents granted 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 (top 6% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #4 of 155 assignees active in that subclass. Grants appear in 69 CPC subclasses total.

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

Crrc Qingdao Sifang Co., Ltd.'s recent grant velocity is +111% 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 Qingdao Sifang Co., Ltd.'s patents?

Crrc Qingdao Sifang Co., Ltd.'s patents average 12.9 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Crrc Qingdao Sifang Co., Ltd.

USPTO PatentsView assignee record - 91 granted patents across 69 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: B61D (Body Details OR Kinds OF Railway Vehicles).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Crrc ranks #3,960 of 49,997 tracked US assignees by granted-patent volume, with 91 patents across 69 technology areas.

#3,960
of 49,997 US assignees by volume: Top 6%
by Innovation Score (56.5/100): 12.9
avg claims per patent: +111%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3960 · Foreign Corporation #3,960 · 91 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 91 grants
TOP-DECILE #3,960/49,997
PHOTO-FINISH Board of Trustees…
CPC-WIDE B61D · 69 areas
INNOV-PAR 56.5/100
CLAIMS-RICH 12.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +111% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Board of Trustees of Southern Illinois University (±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.

How Crrc’s 56.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 15.6 pts (28%) Velocity 8.1 pts (14%) Breadth 25.0 pts (44%) Claim depth 7.7 pts (14%)

Qualcomm Incorporated · highest

85
Crrc Qingdao Sifang · this assignee

56
Firestone Industrial… · near

56
Innio Jenbacher & OG · near

56
Prc-desoto Internati… · near

56
SUN Yat-sen University · near

56
3D Lighting… · lowest

7

What this shows Crrc's Innovation Score is 56.5/100 (top 6% 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.

Does more volume mean deeper claims for Crrc?

Each dot is one of Crrc’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Crrc’s own 12.9 claims/patent is at or below the 15.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Crrc vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

How Crrc's grant cadence moved

Between 2020–2024, Crrc Qingdao Sifang Co., Ltd. received 59 grants versus 28 in 2015–2019 (+111% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2022 at 16 grants and bottomed in 2017 at 6. Lead class B61D accounts for 36.3% of the portfolio across 69 subclasses. Volume neighbours: Board of Trustees of Southern Illinois University (#3,956) and E.G.O. Elektro-Geraetebau GmbH (#3,964).

Crrc's three-year grant acceleration

From 2019–2021 to 2022–2024, Crrc Qingdao Sifang Co., Ltd. moved from 32 to 39 grants (1.22x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Crrc, neither rank-band nor same-CPC leaders (those blocks stay above). In B61D (Body Details OR Kinds OF Railway Vehicles), Crrc ranks #4 of 155 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Innio Jenbacher GmbH & Co OG 56 SUN Yat-sen University 56 Prc-desoto International, Inc. 56 Firestone Industrial Products Company, LLC 56

Similar claim depth

Nearest assignees by average claims per patent (12.9 here).

Wavefront Research, Inc. 12.9 avg Volkswagen Aktiengesellschaft 12.9 avg Bell Sports, Inc. 12.9 avg Wincor Nixdorf International GmbH 12.9 avg

Crrc's Innovation Score vs. every tracked assignee

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

56 Top 6% higher than 94% 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 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%
2025partial year	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

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

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

Crrc Qingdao Sifang Co., Ltd.'s lead technology class is B61D (Body Details OR Kinds OF Railway Vehicles), 36.3% of its portfolio - see every assignee active in that class. Explore B61D
Ranked #3,960 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Crrc Qingdao Sifang Co., Ltd. against Board of Trustees of Southern Illinois University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 56.5/100 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.