Where does WDI (Xiamen) Technology Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), WDI (Xiamen) Technology Inc. ranks #44,043 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 WDI (Xiamen) Technology Inc. hold?

WDI (Xiamen) Technology Inc. holds 6 US utility patents granted between 2016 and 2020, spanning 4 technology areas.

What is WDI (Xiamen) Technology Inc.'s Innovation Score?

WDI (Xiamen) Technology Inc. has an Innovation Score of 21.8 out of 100 (9th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does WDI (Xiamen) Technology Inc. focus on?

WDI (Xiamen) Technology Inc.'s top technology area is E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor) with 6 patents, ranking #34 of 128 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is WDI (Xiamen) Technology Inc.'s patent grant rate increasing or decreasing?

WDI (Xiamen) Technology Inc.'s recent grant velocity is -80% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for WDI (Xiamen) Technology Inc.'s patents?

WDI (Xiamen) Technology Inc.'s patents average 13.3 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 WDI (Xiamen) Technology Inc. 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

WDI (Xiamen) Technology Inc.

USPTO PatentsView assignee record - 6 granted patents across 4 technology areas, recorded in grant years 2016–2020. 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: E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, WDI ranks #44,043 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 4 technology areas.

#44,043
of 49,997 US assignees by volume: 9th percentile
by Innovation Score (21.8/100): 13.3
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44043 · Foreign Corporation #44,043 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #44,043/49,997
PHOTO-FINISH Waukesha Electric…
CPC-NARROW E03D · 4 areas
INNOV-THIN 21.8/100
CLAIMS-RICH 13.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Waukesha Electric Systems, 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 WDI’s 21.8 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 6.7 pts (31%) Velocity 0.0 pts (0%) Breadth 7.1 pts (33%) Claim depth 8.0 pts (37%)

Qualcomm Incorporated · highest

85
WDI (Xiamen)… · this assignee

22
3D Lighting… · lowest

7

What this shows WDI's Innovation Score is 21.8/100 (9th 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 WDI?

Each dot is one of WDI’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). WDI’s own 13.3 claims/patent is at or below the 21.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where WDI's grants concentrate

WDI (Xiamen) Technology Inc. is a focused PatentsView assignee: 4 CPC subclasses with 100% of grants classified under E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor). Peak complete grant year is 2016 (3 grants) versus a trough of 1 in 2020. By volume, WDI sits between Waukesha Electric Systems, Inc. and Webo Werkzeugbau Oberschwaben GMBH.

Waukesha Electric…

6
Wave Power Techno…

6
Wavetronix

6
Wcco Belting

6
Weatherford Canada

6
Weatherford Switz…

6
Weaver Leather

6
Webo Werkzeugbau…

6
WDI (Xiamen) Tech… ◀

6

What this shows WDI holds 6 patents at rank #43,998, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near WDI

By rank, the assignees closest to #43,998 in granted patent volume.

Leaders in E03D (Water-closets OR Urinals With Flushing Devices)

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

WDI's Innovation Score vs. every tracked assignee

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

22 9th percentile higher than 9% 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 · 2016–2020

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

WDI (Xiamen) Technology Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	3	50.0%
2017	2	33.3%
2020	1	16.7%

Which technologies does WDI (Xiamen) Technology Inc. patent most?

E03D - Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor 6

Y10T - Technical Subjects Covered BY Former US Classification 3

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 1

Top 4 of 4 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

WDI (Xiamen) Technology Inc.'s patent record in context - here's where to go next.

WDI (Xiamen) Technology Inc.'s lead technology class is E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor), 100% of its portfolio - see every assignee active in that class. Explore E03D
Ranked #44,043 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare WDI (Xiamen) Technology Inc. against Waukesha Electric Systems, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 21.8/100 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.