Where does Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. ranks #19,343 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Welead Infrastructure Engineering Technology (Zhengzhou), Ltd..

What does claim depth mean for Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.'s patents?

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.'s patents average 8.3 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

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.

Q: How is the Welead Infrastructure Engineering Technology (Zhengzhou), 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 - 15 granted patents across 13 technology areas, recorded in grant years 2021–2024. 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: F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Welead ranks #19,343 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 13 technology areas.

#19,343
of 49,997 US assignees by volume: 49th percentile
by Innovation Score (34.9/100): 8.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R19343 · Foreign Corporation #19,343 · 15 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 15 grants
MID-PACK #19,343/49,997
PHOTO-FINISH VistadelTek
CPC-FOCUS F16L · 13 areas
INNOV-THIN 34.9/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2024 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: VistadelTek, LLC (±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 Welead’s 34.9 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 9.6 pts (28%) Velocity 7.6 pts (22%) Breadth 12.7 pts (36%) Claim depth 5.0 pts (14%)

Qualcomm Incorporated · highest

85
Welead Infrastructur… · this assignee

35
3D Lighting… · lowest

7

What this shows Welead's Innovation Score is 34.9/100 (49th 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 Welead?

Each dot is one of Welead’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). Welead’s own 8.3 claims/patent is at or below the 15.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Welead's grants concentrate

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. is a focused PatentsView assignee: 13 CPC subclasses with 73.3% of grants classified under F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General). Peak complete grant year is 2021 (7 grants) versus a trough of 1 in 2024. By volume, Welead sits between VistadelTek, LLC and Warren Environmental & Coatings, LLC.

Welead's three-year grant acceleration

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. shows 8 grants in 2022–2024 against only 7 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.

Vistadeltek

15
Vita Inclinata IP…

15
Votiro Cybersec

15
Wanhua Chemical (…

15
Wenzhou Medical U…

15
WMF

15
Wacker Nueson Pro…

15
Warren Environmen…

15
Welead Infrastruc… ◀

15

What this shows Welead holds 15 patents at rank #19,335, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Welead

By rank, the assignees closest to #19,335 in granted patent volume.

Leaders in F16L (Pipes)

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

Welead's Innovation Score vs. every tracked assignee

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

35 49th percentile higher than 49% 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 · 2021–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	7	46.7%
2022	5	33.3%
2023	2	13.3%
2024	1	6.7%

Which technologies does Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. patent most?

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 11

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 5

E03F - SEWERS; Cesspools 5

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 2

B09B - Disposal OF Solid Waste NOT Otherwise Provided FOR 1

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 1

B66F - Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load 1

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 1

E21D - SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 1

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

C08L - Compositions OF Macromolecular Compounds 1

Top 13 of 13 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

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.'s patent record in context - here's where to go next.

Welead Infrastructure Engineering Technology (Zhengzhou), Ltd.'s lead technology class is F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General), 73.3% of its portfolio - see every assignee active in that class. Explore F16L
Ranked #19,343 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Welead Infrastructure Engineering Technology (Zhengzhou), Ltd. against VistadelTek, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.9/100 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.