Where does Dowooinsys Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dowooinsys Co., Ltd. ranks #31,441 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 Dowooinsys Co., Ltd. hold?

Dowooinsys Co., Ltd. holds 8 US utility patents granted between 2019 and 2025, spanning 12 technology areas.

What is Dowooinsys Co., Ltd.'s Innovation Score?

Dowooinsys Co., Ltd. has an Innovation Score of 48.4 out of 100 (top 17% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dowooinsys Co., Ltd. focus on?

Dowooinsys Co., Ltd.'s top technology area is C03B (Manufacture, Shaping, OR Supplementary Processes) with 7 patents, ranking #58 of 269 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

Is Dowooinsys Co., Ltd.'s patent grant rate increasing or decreasing?

Dowooinsys Co., Ltd.'s recent grant velocity is +300% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Dowooinsys Co., Ltd.'s patents?

Dowooinsys Co., Ltd.'s patents average 14.3 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 Dowooinsys 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 2015–2025 USPTO PatentsView Foreign Corporation

Dowooinsys Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 12 technology areas, recorded in grant years 2019–2025. 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: C03B (Manufacture, Shaping, OR Supplementary Processes).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dowooinsys ranks #31,441 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 12 technology areas.

#31,441
of 49,997 US assignees by volume: Top 17%
by Innovation Score (48.4/100): 14.3
avg claims per patent: +300%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31441 · Foreign Corporation #31,441 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #31,441/49,997
PHOTO-FINISH Dongguan Hongyu…
CPC-FOCUS C03B · 12 areas
INNOV-PAR 48.4/100
CLAIMS-RICH 14.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +300% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Dongguan Hongyu Plastic Rubber 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 Dowooinsys’s 48.4 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 (41%) Breadth 12.2 pts (25%) Claim depth 8.5 pts (18%)

Qualcomm Incorporated · highest

85
Dowooinsys · this assignee

48
3D Lighting… · lowest

7

What this shows Dowooinsys's Innovation Score is 48.4/100 (top 17% 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 Dowooinsys?

Each dot is one of Dowooinsys’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). Dowooinsys’s own 14.3 claims/patent is ABOVE the 4.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Dowooinsys's grants concentrate

Dowooinsys Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 87.5% of grants classified under C03B (Manufacture, Shaping, OR Supplementary Processes). Peak complete grant year is 2024 (3 grants) versus a trough of 1 in 2019. By volume, Dowooinsys sits between Dongguan Hongyu Plastic Rubber Co., Ltd. and DRK Blutspendedienst BADEN-WÜRTTEMBERG-HESSEN Ggmbh.

Dowooinsys's three-year grant acceleration

Dowooinsys Co., Ltd. shows 4 grants in 2022–2024 against only 1 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.

Dongguan Hongyu P…

8
Dongguan Lianrun…

8
Douxmatok

8
DOW Brasil Sudest…

8
Dragonfruit AI

8
Dream Lion Intern…

8
Dreamgear

8
DRK Blutspendedie…

8
Dowooinsys ◀

8

What this shows Dowooinsys holds 8 patents at rank #31,406, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dowooinsys

By rank, the assignees closest to #31,406 in granted patent volume.

Leaders in C03B (Manufacture)

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

Dowooinsys's Innovation Score vs. every tracked assignee

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

48 Top 17% higher than 83% 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 · 2019–2025

Grants by year

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

View data table

Dowooinsys Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	12.5%
2022	1	12.5%
2024	3	37.5%
2025partial year	3	37.5%

Which technologies does Dowooinsys Co., Ltd. patent most?

C03B - Manufacture, Shaping, OR Supplementary Processes 7

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 6

G06F - Electric Digital Data Processing 2

H10K - Organic Electric Solid-state Devices 2

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 2

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 2

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 1

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 1

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 1

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 1

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 1

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 1

Top 12 of 12 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

Dowooinsys Co., Ltd.'s patent record in context - here's where to go next.

Dowooinsys Co., Ltd.'s lead technology class is C03B (Manufacture, Shaping, OR Supplementary Processes), 87.5% of its portfolio - see every assignee active in that class. Explore C03B
Ranked #31,441 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dowooinsys Co., Ltd. against Dongguan Hongyu Plastic Rubber Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 48.4/100 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.