Where does Ningbo Dongchuan Swimming Pool Equipment Co., Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ningbo Dongchuan Swimming Pool Equipment Co., Inc. ranks #24,887 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 Ningbo Dongchuan Swimming Pool Equipment Co., Inc. hold?

Ningbo Dongchuan Swimming Pool Equipment Co., Inc. holds 11 US utility patents granted between 2018 and 2025, spanning 3 technology areas.

What is Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s Innovation Score?

Ningbo Dongchuan Swimming Pool Equipment Co., Inc. has an Innovation Score of 36.5 out of 100 (top 46% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s patent grant rate increasing or decreasing?

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s recent grant velocity is +800% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s patents?

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s patents average 3.0 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

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.

Q: What technology areas does Ningbo Dongchuan Swimming Pool Equipment Co., Inc. focus on?

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s top technology area is E04H (Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General) with 2 patents, ranking #327 of 795 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

Q: How is the Ningbo Dongchuan Swimming Pool Equipment Co., 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 PatentsView assignee record - 11 granted patents across 3 technology areas, recorded in grant years 2018–2025. 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: E04H (Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Ningbo ranks #24,887 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 3 technology areas.

#24,887
of 49,997 US assignees by volume: Top 46%
by Innovation Score (36.5/100): 3.0
avg claims per patent: +800%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24887 · Foreign Corporation #24,887 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 11 grants
MID-PACK #24,887/49,997
PHOTO-FINISH Nexxspan Healthcare
CPC-NARROW E04H · 3 areas
INNOV-THIN 36.5/100
CLAIMS-SPARSE 3.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +800% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nexxspan Healthcare, 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 Ningbo’s 36.5 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 8.6 pts (24%) Velocity 20.0 pts (55%) Breadth 6.1 pts (17%) Claim depth 1.8 pts (5%)

Qualcomm Incorporated · highest

85
Ningbo Dongchuan… · this assignee

37
3D Lighting… · lowest

7

What this shows Ningbo's Innovation Score is 36.5/100 (top 46% 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 Ningbo?

Each dot is one of Ningbo’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). Ningbo’s own 3.0 claims/patent is at or below the 4.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Ningbo's grants concentrate

Ningbo Dongchuan Swimming Pool Equipment Co., Inc. is a focused PatentsView assignee: 3 CPC subclasses with 18.2% of grants classified under E04H (Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General). Peak complete grant year is 2024 (7 grants) versus a trough of 1 in 2018. By volume, Ningbo sits between Nexxspan Healthcare, LLC and Northeast Petroleum University.

Ningbo's three-year grant acceleration

Ningbo Dongchuan Swimming Pool Equipment Co., Inc. shows 7 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.

Nexxspan Healthca…

11
Nippharma

11
Nidec PSA Emotors

11
Nikkeikin Alumini…

11
Ningbo Meiying Te…

11
Norgen Biotek

11
Northeast Institu…

11
Northeast Petrole…

11
Ningbo Dongchuan… ◀

11

What this shows Ningbo holds 11 patents at rank #24,895, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ningbo

By rank, the assignees closest to #24,895 in granted patent volume.

Leaders in E04H (Buildings OR Like Structures FOR Particular Purposes)

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

Ningbo's Innovation Score vs. every tracked assignee

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

37 Top 46% higher than 54% 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 · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Ningbo Dongchuan Swimming Pool Equipment Co., Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	9.1%
2020	1	9.1%
2021	1	9.1%
2024	7	63.6%
2025partial year	1	9.1%

Which technologies does Ningbo Dongchuan Swimming Pool Equipment Co., Inc. patent most?

E04H - Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General 2

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 1

B25G - Handles FOR Hand Implements 1

Top 3 of 3 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

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s patent record in context - here's where to go next.

Ningbo Dongchuan Swimming Pool Equipment Co., Inc.'s lead technology class is E04H (Buildings OR Like Structures FOR Particular PURPOSES; Swimming OR Splash Baths OR POOLS; MASTS; FENCING; Tents OR Canopies, IN General), 18.2% of its portfolio - see every assignee active in that class. Explore E04H
Ranked #24,887 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Ningbo Dongchuan Swimming Pool Equipment Co., Inc. against Nexxspan Healthcare, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 36.5/100 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.