USPTO 2015–2025 USPTO PatentsView Foreign Corporation

KOA Glass Co., Ltd

USPTO PatentsView assignee record - 9 granted patents across 10 technology areas, active 2015–2021. 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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.6

Avg claims per patent

-20%

5-year filing velocity

The verdict

KOA holds 9 US patents across 10 technology areas, rank #29,178 of 50,000 tracked assignees.

#29,178
of 50,000 US assignees by volume: Top 87%
by Innovation Score (23.7/100): 7.6
avg claims per patent: -20%
filing velocity, last 5 yrs

Portfolio overview

KOA Glass Co., Ltd has been granted 9 US utility patents between 2015 and 2021, placing KOA Glass Co., Ltd at rank #29,178 across all assignees tracked by PlainPatent. This portfolio spans 10 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.6 claims per patent with primary concentration in C03B (MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES). As a Foreign Corporation, KOA Glass Co., Ltd is one of the more focused assignees in the PatentsView dataset. By volume, KOA sits between Kingfar International Inc. (9 patents, rank #29,174) and KOEI Chemical Company, Limited (9 patents, rank #29,182) - the closest US assignees by grant volume. The composite Innovation Score of 23.7/100 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 4 grants, compared with 5 in the 2015–2019 window, a -20% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. KOA Glass Co., Ltd's 7.6 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 10 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark KOA Glass Co., Ltd against peers pursuing similar technology classes.

Kingfar Internati…

9
Kirusa

9
KJ Chemicals

9
Knape & VOGT Manu…

9
KOA Health Digita…

9
KOBO Products

9
Kochi University

9
KOEI Chemical

9
KOA Glass ◀

9

What this shows KOA holds 9 patents at rank #29,178, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near KOA

By rank, the assignees closest to #29,178 in granted patent volume.

Leaders in C03B (Manufacture)

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

KOA's Innovation Score vs. every tracked assignee

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

24 Top 87% higher than 13% 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 · 2015–2021

Grants by year

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

View data table

KOA Glass Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	11.1%
2016	1	11.1%
2018	1	11.1%
2019	2	22.2%
2020	1	11.1%
2021	3	33.3%

Which technologies does KOA Glass Co., Ltd patent most?

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 6

B65D - CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES 6

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 5

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 2

C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 2

A01N - PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF ; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES ; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS 2

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 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

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 1

D06F - LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES 1

Top 10 of 10 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#29,178

Across all tracked assignees

Innovation Score

23.7 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 KOA Glass Co., Ltd hold?

KOA Glass Co., Ltd holds 9 US granted patents filed between 2015 and 2021, spanning 10 technology areas.

What is KOA Glass Co., Ltd's Innovation Score?

KOA Glass Co., Ltd has an Innovation Score of 23.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does KOA Glass Co., Ltd focus on?

KOA Glass Co., Ltd's top technology area is C03B (MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES) with 6 patents. The company has filed patents in 10 CPC subclasses total.

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

KOA Glass Co., Ltd's recent filing velocity is -20% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

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

KOA Glass Co., Ltd's patents average 7.6 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the KOA Glass 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

KOA's 9 grants land it in the top 87% 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 - KOA ranks #29,178 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

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.