Where does Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. ranks #34,884 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s patent grant rate increasing or decreasing?

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s recent grant velocity is +150% 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 Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s patents?

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s patents average 10.4 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.

Q: How is the Crrc Zhuzhou Electric Locomotive Research Institute 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 PatentsView assignee record - 7 granted patents across 16 technology areas, recorded in grant years 2017–2023. 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: B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Crrc ranks #34,884 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 16 technology areas.

#34,884
of 49,997 US assignees by volume: Top 34%
by Innovation Score (40.9/100): 10.4
avg claims per patent: +150%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34884 · Foreign Corporation #34,884 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 7 grants
MID-PACK #34,884/49,997
PHOTO-FINISH Covercress
CPC-FOCUS B60L · 16 areas
INNOV-PAR 40.9/100
CLAIMS-PAR 10.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +150% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Covercress Inc. (±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 40.9 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 7.2 pts (18%) Velocity 13.3 pts (33%) Breadth 14.1 pts (34%) Claim depth 6.3 pts (15%)

Qualcomm Incorporated · highest

85
Crrc Zhuzhou… · this assignee

41
3D Lighting… · lowest

7

What this shows Crrc's Innovation Score is 40.9/100 (top 34% 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 10.4 claims/patent is at or below the 15.7 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.

Where Crrc's grants concentrate

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. is a focused PatentsView assignee: 16 CPC subclasses with 42.9% of grants classified under B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU). Peak complete grant year is 2022 (2 grants) versus a trough of 1 in 2017. By volume, Crrc sits between Covercress Inc. and Cscm Management Company LLC.

Crrc's three-year grant acceleration

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. shows 4 grants in 2022–2024 against only 2 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.

Covercress

7
CPE Lyon Formatio…

7
Cpfilms

7
CPL Assets

7
Cruise Munich

7
Crushlock

7
CS Genetics

7
Cscm Management

7
Crrc Zhuzhou Elec… ◀

7

What this shows Crrc holds 7 patents at rank #34,737, 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 #34,737 in granted patent volume.

Leaders in B60L (Propulsion OF Electrically-propelled 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, grant velocity, technology breadth, and claim depth (0–100)

41 Top 34% higher than 66% 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 · 2017–2023

Grants by year

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

View data table

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	14.3%
2019	1	14.3%
2020	1	14.3%
2022	2	28.6%
2023	2	28.6%

Which technologies does Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. patent most?

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 3

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 2

H02K - Dynamo-electric Machines 2

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

H04W - Wireless Communication Networks 1

B60M - Power Supply Lines, AND Devices Along Rails, FOR Electrically- Propelled Vehicles 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 1

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 1

B61L - Guiding Railway TRAFFIC; Ensuring THE Safety OF Railway Traffic 1

G01C - Measuring Distances, Levels OR BEARINGS; SURVEYING; NAVIGATION; Gyroscopic INSTRUMENTS; Photogrammetry OR Videogrammetry 1

G01P - Measuring Linear OR Angular Speed, Acceleration, Deceleration, OR SHOCK; Indicating Presence, Absence, OR Direction, OF Movement 1

H04B - Transmission 1

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 1

Top 15 of 16 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 Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s patent record in context - here's where to go next.

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.'s lead technology class is B60L (Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic SU), 42.9% of its portfolio - see every assignee active in that class. Explore B60L
Ranked #34,884 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd. against Covercress Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.9/100 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.