USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Asahi Glass Co., Ltd.

USPTO PatentsView assignee record - 411 granted patents across 121 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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 MA).

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

Explore the portfolio See the ranking

411

Total patents granted

121

CPC technology areas

16.8

Avg claims per patent

-97%

5-year filing velocity

The verdict

Asahi holds 411 US patents across 121 technology areas, rank #1,052 of 50,000 tracked assignees.

#1,052
of 50,000 US assignees by volume: Top 6%
by Innovation Score (56.1/100): 16.8
avg claims per patent: -97%
filing velocity, last 5 yrs

Portfolio overview

Asahi Glass Co., Ltd. has been granted 411 US utility patents between 2015 and 2024, placing Asahi Glass Co., Ltd. at rank #1,052 across all assignees tracked by PlainPatent. This portfolio spans 121 distinct Cooperative Patent Classification (CPC) subclasses, averaging 16.8 claims per patent with primary concentration in 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 MA). As a Foreign Corporation, Asahi Glass Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Asahi sits between Siemens Mobility Gmbh (413 patents, rank #1,048) and ASSA Abloy AB (408 patents, rank #1,056) - the closest US assignees by grant volume. The composite Innovation Score of 56.1/100 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 11 grants, compared with 400 in the 2015–2019 window, a -97% 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. Asahi Glass Co., Ltd.'s 16.8 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Asahi Glass Co., Ltd. against peers pursuing similar technology classes.

Siemens Mobility

413
Andreas Stihl & KG

412
Japan Tobacco

412
A9 com

411
Gigaphoton

411
Asahi Glass ◀

411
Seoul Semiconduct…

410
The Broad Institu…

410
ASSA Abloy AB

408

What this shows Asahi holds 411 patents at rank #1,052, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Asahi

By rank, the assignees closest to #1,052 in granted patent volume.

Leaders in C03C (Chemical Composition OF Glasses)

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

Asahi's Innovation Score vs. every tracked assignee

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

56 Top 6% higher than 94% 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 · 2015–2024

Grants by year

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

View data table

Asahi Glass Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	88	21.4%
2016	97	23.6%
2017	111	27.0%
2018	91	22.1%
2019	13	3.2%
2020	10	2.4%
2024	1	0.2%

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

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 110

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 51

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 49

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 49

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 43

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 38

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 36

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 34

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 33

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 31

C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 30

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 30

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 29

G03F - PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; 26

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 25

Top 15 of 121 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#1,052

Across all tracked assignees

Innovation Score

56.1 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 Asahi Glass Co., Ltd. hold?

Asahi Glass Co., Ltd. holds 411 US granted patents filed between 2015 and 2024, spanning 121 technology areas.

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

Asahi Glass Co., Ltd. has an Innovation Score of 56.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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

Asahi Glass Co., Ltd.'s top technology area is 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) with 110 patents. The company has filed patents in 121 CPC subclasses total.

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

Asahi Glass Co., Ltd.'s recent filing velocity is -97% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

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

Asahi Glass Co., Ltd.'s patents average 16.8 claims each. This falls within the standard range, providing solid legal coverage.

How is the Asahi 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

Asahi's 411 grants land it in the top 6% 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 - Asahi ranks #1,052 of 50,000. Top 50 holders
Most of this portfolio concentrates in C03C - see who else leads that technology area. C03C 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.