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

According to USPTO PatentsView (2015–2025 granted utility patents), Woongjin Coway Co., Ltd. ranks #9,673 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 Woongjin Coway Co., Ltd. hold?

Woongjin Coway Co., Ltd. holds 33 US utility patents granted between 2015 and 2025, spanning 22 technology areas.

What is Woongjin Coway Co., Ltd.'s Innovation Score?

Woongjin Coway Co., Ltd. has an Innovation Score of 34.7 out of 100 (48th 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 Woongjin Coway Co., Ltd. focus on?

Woongjin Coway Co., Ltd.'s top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 8 patents, ranking #178 of 1,366 assignees active in that subclass. Grants appear in 22 CPC subclasses total.

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

Woongjin Coway Co., Ltd.'s recent grant velocity is -48% 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 Woongjin Coway Co., Ltd.'s patents?

Woongjin Coway Co., Ltd.'s patents average 5.7 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 Woongjin Coway 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

Woongjin Coway Co., Ltd.

USPTO PatentsView assignee record - 33 granted patents across 22 technology areas, recorded in grant years 2015–2025. 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: 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, Woongjin ranks #9,673 of 49,997 tracked US assignees by granted-patent volume, with 33 patents across 22 technology areas.

#9,673
of 49,997 US assignees by volume: 48th percentile
by Innovation Score (34.7/100): 5.7
avg claims per patent: -48%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9673 · Foreign Corporation #9,673 · 33 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 33 grants
UPPER-Q #9,673/49,997
PHOTO-FINISH Vidyo
CPC-FOCUS C02F · 22 areas
INNOV-THIN 34.7/100
CLAIMS-SPARSE 5.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -48% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Vidyo, 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 Woongjin’s 34.7 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 12.2 pts (35%) Velocity 2.5 pts (7%) Breadth 16.6 pts (48%) Claim depth 3.4 pts (10%)

Qualcomm Incorporated · highest

85
Guidewire Software · near

35
HCA Holdings · near

35
NetIQ · near

35
Satori Worldwide · near

35
Woongjin Coway · this assignee

35
3D Lighting… · lowest

7

What this shows Woongjin's Innovation Score is 34.7/100 (48th 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 Woongjin?

Each dot is one of Woongjin’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). Woongjin’s own 5.7 claims/patent is at or below the 13.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Woongjin's grants concentrate

Woongjin Coway Co., Ltd. is a focused PatentsView assignee: 22 CPC subclasses with 24.2% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2016 (9 grants) versus a trough of 1 in 2023. By volume, Woongjin sits between Vidyo, Inc. and Wi-Charge Ltd..

Woongjin's three-year grant acceleration

Woongjin Coway Co., Ltd. shows 3 grants in 2022–2024 against only 8 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.

Vidyo

33
Wako Pure Chemica…

33
West Coast Imports

33
Wireless Environm…

33
Worklife Brands

33
Walker Digital Ta…

33
Watt Fuel Cell

33
Wi-charge

33
Woongjin Coway ◀

33

What this shows Woongjin holds 33 patents at rank #9,668, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Woongjin

By rank, the assignees closest to #9,668 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Woongjin, neither rank-band nor same-CPC leaders (those blocks stay above). In C02F (Treatment OF Water), Woongjin ranks #178 of 1,366 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (35 here).

HCA Holdings, Inc. 35 Satori Worldwide, LLC 35 NetIQ Corporation 35 Guidewire Software, Inc. 35

Woongjin's Innovation Score vs. every tracked assignee

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

35 48th percentile higher than 48% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Woongjin Coway Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	18.2%
2016	9	27.3%
2017	4	12.1%
2018	2	6.1%
2020	2	6.1%
2021	6	18.2%
2022	2	6.1%
2023	1	3.0%
2025partial year	1	3.0%

Which technologies does Woongjin Coway Co., Ltd. patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 8

B01D - Separation 7

F25C - Producing, Working OR Handling ICE 5

E03D - Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor 4

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 3

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 3

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 3

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 3

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 2

Y10T - Technical Subjects Covered BY Former US Classification 2

E03B - Installations OR Methods FOR Obtaining, Collecting, OR Distributing Water 1

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 1

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 1

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Top 15 of 22 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

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

Woongjin Coway Co., Ltd.'s lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 24.2% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #9,673 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Woongjin Coway Co., Ltd. against Vidyo, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.7/100 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.