USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Dowooinsys Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 12 technology areas, active 2019–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C03B (MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

14.3

Avg claims per patent

+600%

5-year filing velocity

The verdict

Dowooinsys holds 8 US patents across 12 technology areas, rank #31,406 of 50,000 tracked assignees.

#31,406
of 50,000 US assignees by volume: Top 17%
by Innovation Score (48.4/100): 14.3
avg claims per patent: +600%
filing velocity, last 5 yrs

Portfolio overview

Dowooinsys Co., Ltd. has been granted 8 US utility patents between 2019 and 2025, placing Dowooinsys Co., Ltd. at rank #31,406 across all assignees tracked by PlainPatent. This portfolio spans 12 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.3 claims per patent with primary concentration in C03B (MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES). As a Foreign Corporation, Dowooinsys Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Dowooinsys sits between Dongguan Hongyu Plastic Rubber Co., Ltd. (8 patents, rank #31,402) and DRK Blutspendedienst Baden-württemberg-hessen Ggmbh (8 patents, rank #31,410) - the closest US assignees by grant volume. The composite Innovation Score of 48.4/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 7 grants, compared with 1 in the 2015–2019 window, a +600% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Dowooinsys Co., Ltd.'s 14.3 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 12 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Dowooinsys Co., Ltd. against peers pursuing similar technology classes.

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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, filing velocity, technology breadth, and claim depth (0–100)

48 Top 17% higher than 83% of 50,000 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%
2025	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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#31,406

Across all tracked assignees

Innovation Score

48.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Dowooinsys Co., Ltd. hold?

Dowooinsys Co., Ltd. holds 8 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 12 CPC subclasses total.

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

Dowooinsys Co., Ltd.'s recent filing velocity is +600% compared to the prior five-year period. This indicates accelerating innovation.

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

Dowooinsys Co., Ltd.'s patents average 14.3 claims each. This falls within the standard range, providing solid legal coverage.

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.

How to use this portfolio

Dowooinsys's 8 grants land it in the top 17% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Dowooinsys ranks #31,406 of 50,000. Top 50 holders
Most of this portfolio concentrates in C03B - see who else leads that technology area. C03B leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.