USPTO 2015–2025 USPTO PatentsView Foreign Corporation

WON Kwang S&T Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 15 technology areas, active 2022–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: Y02W (CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

10.3

Avg claims per patent

5-year filing velocity

The verdict

WON holds 8 US patents across 15 technology areas, rank #33,865 of 50,000 tracked assignees.

#33,865
of 50,000 US assignees by volume: Top 19%
by Innovation Score (47.4/100): 10.3
avg claims per patent

Portfolio overview

WON Kwang S&T Co., Ltd. has been granted 8 US utility patents between 2022 and 2025, placing WON Kwang S&T Co., Ltd. at rank #33,865 across all assignees tracked by PlainPatent. This portfolio spans 15 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.3 claims per patent with primary concentration in Y02W (CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT). As a Foreign Corporation, WON Kwang S&T Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, WON sits between WING TAK LEE Silicone Rubber Technology (shenzhen) Co., Ltd (8 patents, rank #33,861) and Wuhan China STAR Optoelectronics (8 patents, rank #33,869) - the closest US assignees by grant volume. The composite Innovation Score of 47.4/100 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. Historical data spans 2022 through 2025, with 8 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. WON Kwang S&T Co., Ltd.'s 10.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 15 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark WON Kwang S&T Co., Ltd. against peers pursuing similar technology classes.

WING TAK LEE Sili…

8
WINN Incorporated

8
WIPH

8
WOLF & Associates

8
Worldline

8
Wowwee Group

8
WTS

8
Wuhan China STAR…

8
WON Kwang S&T ◀

8

What this shows WON holds 8 patents at rank #33,865, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near WON

By rank, the assignees closest to #33,865 in granted patent volume.

Leaders in Y02W (Climate Change Mitigation Technologies Related TO Wastewa…)

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

WON's Innovation Score vs. every tracked assignee

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

47 Top 19% higher than 81% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

WON Kwang S&T Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	2	25.0%
2024	3	37.5%
2025	3	37.5%

Which technologies does WON Kwang S&T Co., Ltd. patent most?

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 6

H10F - INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION 6

B09B - DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR 4

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 4

Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS 3

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 3

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 3

H02S - GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES 3

B26D - CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING 3

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 2

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 1

B65H - HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES 1

B29B - PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS 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

B26F - PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING 1

Top 15 of 15 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Where it ranks

Overall rank by patents

#33,865

Across all tracked assignees

Innovation Score

47.4 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 WON Kwang S&T Co., Ltd. hold?

WON Kwang S&T Co., Ltd. holds 8 US granted patents filed between 2022 and 2025, spanning 15 technology areas.

What is WON Kwang S&T Co., Ltd.'s Innovation Score?

WON Kwang S&T Co., Ltd. has an Innovation Score of 47.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does WON Kwang S&T Co., Ltd. focus on?

WON Kwang S&T Co., Ltd.'s top technology area is Y02W (CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT) with 6 patents. The company has filed patents in 15 CPC subclasses total.

Is WON Kwang S&T Co., Ltd.'s patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for WON Kwang S&T Co., Ltd..

What does claim depth mean for WON Kwang S&T Co., Ltd.'s patents?

WON Kwang S&T Co., Ltd.'s patents average 10.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the WON Kwang S&T 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

WON's 8 grants land it in the top 19% 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 - WON ranks #33,865 of 50,000. Top 50 holders
Most of this portfolio concentrates in Y02W - see who else leads that technology area. Y02W 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.