Where does Sumita Optical Glass, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumita Optical Glass, Inc. ranks #20,472 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 Sumita Optical Glass, Inc. hold?

Sumita Optical Glass, Inc. holds 14 US utility patents granted between 2016 and 2025, spanning 15 technology areas.

What is Sumita Optical Glass, Inc.'s Innovation Score?

Sumita Optical Glass, Inc. has an Innovation Score of 40.2 out of 100 (top 36% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Sumita Optical Glass, Inc.'s patent grant rate increasing or decreasing?

Sumita Optical Glass, Inc.'s recent grant velocity is -37% 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 Sumita Optical Glass, Inc.'s patents?

Sumita Optical Glass, Inc.'s patents average 6.4 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 Sumita Optical Glass, Inc. 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

Sumita Optical Glass, Inc.

Q: What technology areas does Sumita Optical Glass, Inc. focus on?

Sumita Optical Glass, Inc.'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 7 patents, ranking #86 of 498 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

USPTO PatentsView assignee record - 14 granted patents across 15 technology areas, recorded in grant years 2016–2025. 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: 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 by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumita ranks #20,472 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 15 technology areas.

#20,472
of 49,997 US assignees by volume: Top 36%
by Innovation Score (40.2/100): 6.4
avg claims per patent: -37%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20472 · Foreign Corporation #20,472 · 14 grants

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

GRANTS-MICRO 14 grants
MID-PACK #20,472/49,997
PHOTO-FINISH Stoller Enterprises
CPC-FOCUS C03C · 15 areas
INNOV-PAR 40.2/100
CLAIMS-SPARSE 6.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -37% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Stoller Enterprises, 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 Sumita’s 40.2 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 9.4 pts (23%) Velocity 13.3 pts (33%) Breadth 13.7 pts (34%) Claim depth 3.8 pts (9%)

Qualcomm Incorporated · highest

85
Sumita Optical Glass · this assignee

40
3D Lighting… · lowest

7

What this shows Sumita's Innovation Score is 40.2/100 (top 36% 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 Sumita?

Each dot is one of Sumita’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). Sumita’s own 6.4 claims/patent is at or below the 17.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sumita's grants concentrate

Sumita Optical Glass, Inc. is a focused PatentsView assignee: 15 CPC subclasses with 50% of grants classified under 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). Peak complete grant year is 2016 (7 grants) versus a trough of 1 in 2019. By volume, Sumita sits between Stoller Enterprises, Inc. and Surefire Medical, Inc..

Sumita's three-year grant acceleration

Sumita Optical Glass, Inc. shows 4 grants in 2022–2024 against only 2 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Stoller Enterpris…

14
Stoneridge Contro…

14
Stratos Genomics

14
Strawberry Scienc…

14
Sunlighten

14
Superturbo

14
Sureharvest

14
Surefire Medical

14
Sumita Optical Gl… ◀

14

What this shows Sumita holds 14 patents at rank #20,471, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumita

By rank, the assignees closest to #20,471 in granted patent volume.

Leaders in C03C (Chemical Composition OF Glasses)

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

Sumita's Innovation Score vs. every tracked assignee

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

40 Top 36% higher than 64% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Sumita Optical Glass, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	7	50.0%
2019	1	7.1%
2020	1	7.1%
2022	1	7.1%
2023	2	14.3%
2024	1	7.1%
2025partial year	1	7.1%

Which technologies does Sumita Optical Glass, Inc. 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 7

G02B - Optical Elements, Systems OR Apparatus 5

C03B - Manufacture, Shaping, OR Supplementary Processes 4

A61B - DIAGNOSIS; SURGERY; Identification 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 1

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 1

F21W - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO Uses OR Applications OF Lighting Devices OR Systems 1

H01S - Devices Using THE Process OF Light Amplification BY Stimulated Emission OF Radiation [LASER] TO Amplify OR Generate LIGHT; Devices Using Stimulated Emission OF Electromagnetic Radiation IN Wave Ranges Other Than Optical 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 1

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 1

Top 15 of 15 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

Sumita Optical Glass, Inc.'s patent record in context - here's where to go next.

Sumita Optical Glass, Inc.'s lead technology class 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 MA), 50% of its portfolio - see every assignee active in that class. Explore C03C
Ranked #20,472 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumita Optical Glass, Inc. against Stoller Enterprises, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.2/100 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.