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

According to USPTO PatentsView (2015–2025 granted utility patents), KOA Glass Co., Ltd ranks #29,217 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 KOA Glass Co., Ltd hold?

KOA Glass Co., Ltd holds 9 US utility patents granted 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 (13th 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 KOA Glass Co., Ltd focus on?

KOA Glass Co., Ltd's top technology area is C03B (Manufacture, Shaping, OR Supplementary Processes) with 6 patents, ranking #72 of 269 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

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

KOA Glass Co., Ltd's recent grant velocity is -20% 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 KOA Glass Co., Ltd's patents?

KOA Glass Co., Ltd's patents average 7.6 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

KOA Glass Co., Ltd

USPTO PatentsView assignee record - 9 granted patents across 10 technology areas, recorded in grant years 2015–2021. 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, KOA ranks #29,217 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 10 technology areas.

#29,217
of 49,997 US assignees by volume: 13th percentile
by Innovation Score (23.7/100): 7.6
avg claims per patent: -20%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R29217 · Foreign Corporation #29,217 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 9 grants
MID-PACK #29,217/49,997
PHOTO-FINISH Kingfar International
CPC-FOCUS C03B · 10 areas
INNOV-THIN 23.7/100
CLAIMS-SPARSE 7.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -20% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Kingfar International 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 KOA’s 23.7 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 8.0 pts (34%) Velocity 0.0 pts (0%) Breadth 11.2 pts (47%) Claim depth 4.5 pts (19%)

Qualcomm Incorporated · highest

85
KOA Glass · this assignee

24
3D Lighting… · lowest

7

What this shows KOA's Innovation Score is 23.7/100 (13th 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 KOA?

Each dot is one of KOA’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). KOA’s own 7.6 claims/patent is at or below the 15.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where KOA's grants concentrate

KOA Glass Co., Ltd is a focused PatentsView assignee: 10 CPC subclasses with 66.7% of grants classified under C03B (Manufacture, Shaping, OR Supplementary Processes). Peak complete grant year is 2021 (3 grants) versus a trough of 1 in 2015. By volume, KOA sits between Kingfar International Inc. and Koei Chemical Company, Limited.

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

24 13th percentile higher than 13% 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 · 2015–2021

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

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

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

KOA Glass Co., Ltd's lead technology class is C03B (Manufacture, Shaping, OR Supplementary Processes), 66.7% of its portfolio - see every assignee active in that class. Explore C03B
Ranked #29,217 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare KOA Glass Co., Ltd against Kingfar International Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.7/100 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.