Where does Guangzhou Metro Design & Research Institute Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Guangzhou Metro Design & Research Institute Co., Ltd. ranks #47,254 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 Guangzhou Metro Design & Research Institute Co., Ltd. hold?

Guangzhou Metro Design & Research Institute Co., Ltd. holds 5 US utility patents granted between 2023 and 2025, spanning 8 technology areas.

What is Guangzhou Metro Design & Research Institute Co., Ltd.'s Innovation Score?

Guangzhou Metro Design & Research Institute Co., Ltd. has an Innovation Score of 33.8 out of 100 (46th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Guangzhou Metro Design & Research Institute Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Guangzhou Metro Design & Research Institute Co., Ltd..

What does claim depth mean for Guangzhou Metro Design & Research Institute Co., Ltd.'s patents?

Guangzhou Metro Design & Research Institute Co., Ltd.'s patents average 7.2 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

Guangzhou Metro Design & Research Institute Co., Ltd.

Q: What technology areas does Guangzhou Metro Design & Research Institute Co., Ltd. focus on?

Guangzhou Metro Design & Research Institute Co., Ltd.'s top technology area is F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing) with 3 patents, ranking #454 of 2,095 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Q: How is the Guangzhou Metro Design & 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 - 5 granted patents across 8 technology areas, recorded in grant years 2023–2025. 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: F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Guangzhou ranks #47,254 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 8 technology areas.

#47,254
of 49,997 US assignees by volume: 46th percentile
by Innovation Score (33.8/100): 7.2
avg claims per patent

USPTO PatentsView assignee plate

Corpus R47254 · Foreign Corporation #47,254 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 5 grants
BOTTOM-DECILE #47,254/49,997
PHOTO-FINISH Guangdong Power Grid
CPC-NARROW F16B · 8 areas
INNOV-THIN 33.8/100
CLAIMS-SPARSE 7.2 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2023–2025 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Guangdong Power Grid Co Ltd. (±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 Guangzhou’s 33.8 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 6.2 pts (18%) Velocity 13.3 pts (39%) Breadth 10.0 pts (30%) Claim depth 4.3 pts (13%)

Qualcomm Incorporated · highest

85
Guangzhou Metro… · this assignee

34
3D Lighting… · lowest

7

What this shows Guangzhou's Innovation Score is 33.8/100 (46th percentile 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 Guangzhou?

Each dot is one of Guangzhou’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). Guangzhou’s own 7.2 claims/patent is ABOVE the 1.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Guangzhou's grants concentrate

Guangzhou Metro Design & Research Institute Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 60% of grants classified under F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing). By volume, Guangzhou sits between Guangdong Power Grid Co Ltd. and Guangzhou Shengjiu Technology Co., Ltd..

Guangzhou's three-year grant acceleration

Guangzhou Metro Design & Research Institute Co., Ltd. shows 2 grants in 2022–2024 against only 0 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.

Guangdong Power G…

5
Guangzhou Bizhuo…

5
Guangzhou Innocar…

5
Guangzhou Landsca…

5
Guangzhou Mokaqi…

5
Guangzhou Pulisi…

5
Guangzhou Roiskin…

5
Guangzhou Shengji…

5
Guangzhou Metro D… ◀

5

What this shows Guangzhou holds 5 patents at rank #47,270, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Guangzhou

By rank, the assignees closest to #47,270 in granted patent volume.

Leaders in F16B (Devices FOR Fastening OR Securing Constructional Elements…)

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

Guangzhou's Innovation Score vs. every tracked assignee

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

34 46th percentile higher than 46% 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 · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

Guangzhou Metro Design & Research Institute Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	1	20.0%
2024	1	20.0%
2025partial year	3	60.0%

Which technologies does Guangzhou Metro Design & Research Institute Co., Ltd. patent most?

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 3

E04B - General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings 2

H02B - Boards, Substations OR Switching Arrangements FOR THE Supply OR Distribution OF Electric Power 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

B61B - Railway SYSTEMS; Equipment Therefor NOT Otherwise Provided FOR 1

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 1

Y10T - Technical Subjects Covered BY Former US Classification 1

Top 8 of 8 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

Guangzhou Metro Design & Research Institute Co., Ltd.'s patent record in context - here's where to go next.

Guangzhou Metro Design & Research Institute Co., Ltd.'s lead technology class is F16B (Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing), 60% of its portfolio - see every assignee active in that class. Explore F16B
Ranked #47,254 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Guangzhou Metro Design & Research Institute Co., Ltd. against Guangdong Power Grid Co Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.8/100 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.