Where does Xiamen University of Technology rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Xiamen University of Technology ranks #33,937 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 Xiamen University of Technology hold?

Xiamen University of Technology holds 8 US utility patents granted between 2022 and 2024, spanning 14 technology areas.

What is Xiamen University of Technology's Innovation Score?

Xiamen University of Technology has an Innovation Score of 46.4 out of 100 (top 21% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Xiamen University of Technology focus on?

Xiamen University of Technology's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 4 patents, ranking #402 of 1,366 assignees active in that subclass. Grants appear in 14 CPC subclasses total.

Is Xiamen University of Technology's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Xiamen University of Technology.

What does claim depth mean for Xiamen University of Technology's patents?

Xiamen University of Technology's patents average 9.3 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.

How is the Xiamen University of Technology 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

Xiamen University of Technology

USPTO PatentsView assignee record - 8 granted patents across 14 technology areas, recorded in grant years 2022–2024. 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Xiamen ranks #33,937 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 14 technology areas.

#33,937
of 49,997 US assignees by volume: Top 21%
by Innovation Score (46.4/100): 9.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R33937 · Foreign Corporation #33,937 · 8 grants

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

GRANTS-MICRO 8 grants
MID-PACK #33,937/49,997
PHOTO-FINISH Xerion Advanced…
CPC-FOCUS C02F · 14 areas
INNOV-PAR 46.4/100
CLAIMS-PAR 9.3 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2024 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Xerion Advanced Battery Corporation (±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 Xiamen’s 46.4 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 7.6 pts (16%) Velocity 20.0 pts (43%) Breadth 13.2 pts (28%) Claim depth 5.6 pts (12%)

Qualcomm Incorporated · highest

85
Xiamen University… · this assignee

46
3D Lighting… · lowest

7

What this shows Xiamen's Innovation Score is 46.4/100 (top 21% 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 Xiamen?

Each dot is one of Xiamen’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). Xiamen’s own 9.3 claims/patent is at or below the 14.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Xiamen's grants concentrate

Xiamen University of Technology is a focused PatentsView assignee: 14 CPC subclasses with 50% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2022 (5 grants) versus a trough of 1 in 2024. By volume, Xiamen sits between Xyratex Technology LIMITED—A Seagate Company and Xintela AB.

Xiamen's three-year grant acceleration

Xiamen University of Technology shows 8 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.

Xyratex Technolog…

8
Xerion Advanced B…

8
Xerox Internation…

8
Xiamen Prime Show…

8
Xiamen Yaxon Zhil…

8
Xiamen Zhoulong S…

8
Xiber

8
Xintela AB

8
Xiamen University… ◀

8

What this shows Xiamen holds 8 patents at rank #33,926, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Xiamen

By rank, the assignees closest to #33,926 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Xiamen's Innovation Score vs. every tracked assignee

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

46 Top 21% higher than 79% 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 · 2022–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Xiamen University of Technology patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	5	62.5%
2023	2	25.0%
2024	1	12.5%

Which technologies does Xiamen University of Technology patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 4

B01D - Separation 4

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 3

F15D - Fluid Dynamics, i.e. Methods OR Means FOR Influencing THE Flow OF Gases OR Liquids 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

C08L - Compositions OF Macromolecular Compounds 1

C08C - Treatment OR Chemical Modification OF Rubbers 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 1

G06T - Image Data Processing OR Generation, IN General 1

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 1

G02F - Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optical Logic ELEMENTS; Optical ANALOGUE/DIGITAL Converters 1

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

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 1

Top 14 of 14 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

Xiamen University of Technology's patent record in context - here's where to go next.

Xiamen University of Technology's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 50% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #33,937 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Xiamen University of Technology against Xyratex Technology LIMITED—A Seagate Company, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.4/100 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.