USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nippon Electric Glass Co., Ltd.

USPTO PatentsView assignee record - 363 granted patents across 96 technology areas, active 2015–2025. 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

363

Total patents granted

CPC technology areas

9.6

Avg claims per patent

+40%

5-year filing velocity

The verdict

Nippon holds 363 US patents across 96 technology areas, rank #1,172 of 50,000 tracked assignees.

#1,172
of 50,000 US assignees by volume: Top 4%
by Innovation Score (58.5/100): 9.6
avg claims per patent: +40%
filing velocity, last 5 yrs

Portfolio overview

Nippon Electric Glass Co., Ltd. has been granted 363 US utility patents between 2015 and 2025, placing Nippon Electric Glass Co., Ltd. at rank #1,172 across all assignees tracked by PlainPatent. This portfolio spans 96 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.6 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, Nippon Electric Glass Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Nippon sits between Excalibur IP, Llc (364 patents, rank #1,168) and Plantronics, Inc. (362 patents, rank #1,176) - the closest US assignees by grant volume. The composite Innovation Score of 58.5/100 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 212 grants, compared with 151 in the 2015–2019 window, a +40% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. 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. Nippon Electric Glass Co., Ltd.'s 9.6 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 96 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nippon Electric Glass Co., Ltd. against peers pursuing similar technology classes.

Excalibur IP

364
KARL Storz SE & KG

364
Ability Opto- Tec…

363
Fenwal

363
Sigmasense

363
Stryker European…

363
Nippon Electric G… ◀

363
Coupang

362
Plantronics

362

What this shows Nippon holds 363 patents at rank #1,172, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nippon

By rank, the assignees closest to #1,172 in granted patent volume.

Leaders in C03C (Chemical Composition OF Glasses)

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

Nippon's Innovation Score vs. every tracked assignee

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

59 Top 4% higher than 96% 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 · 2015–2025

Grants by year

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

View data table

Nippon Electric Glass Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	35	9.6%
2016	32	8.8%
2017	27	7.4%
2018	23	6.3%
2019	34	9.4%
2020	38	10.5%
2021	30	8.3%
2022	40	11.0%
2023	32	8.8%
2024	41	11.3%
2025	31	8.5%

Which technologies does Nippon Electric 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 194

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 143

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 70

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 54

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 47

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 45

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 40

H10H - INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS 38

B65H - HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES 30

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 28

H10K - ORGANIC ELECTRIC SOLID-STATE DEVICES 26

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 24

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 24

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 24

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 19

Top 15 of 96 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#1,172

Across all tracked assignees

Innovation Score

58.5 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 Nippon Electric Glass Co., Ltd. hold?

Nippon Electric Glass Co., Ltd. holds 363 US granted patents filed between 2015 and 2025, spanning 96 technology areas.

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

Nippon Electric Glass Co., Ltd. has an Innovation Score of 58.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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

Nippon Electric 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 194 patents. The company has filed patents in 96 CPC subclasses total.

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

Nippon Electric Glass Co., Ltd.'s recent filing velocity is +40% compared to the prior five-year period. The company is maintaining or growing its patent output.

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

Nippon Electric Glass Co., Ltd.'s patents average 9.6 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Nippon Electric 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

Nippon's 363 grants land it in the top 4% 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 - Nippon ranks #1,172 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.