Where does Sumitomo Heavy Industries ION Technology Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumitomo Heavy Industries ION Technology Co., Ltd. ranks #4,437 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 Sumitomo Heavy Industries ION Technology Co., Ltd. hold?

Sumitomo Heavy Industries ION Technology Co., Ltd. holds 80 US utility patents granted between 2015 and 2025, spanning 11 technology areas.

What is Sumitomo Heavy Industries ION Technology Co., Ltd.'s Innovation Score?

Sumitomo Heavy Industries ION Technology Co., Ltd. has an Innovation Score of 41.4 out of 100 (top 33% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumitomo Heavy Industries ION Technology Co., Ltd. focus on?

Sumitomo Heavy Industries ION Technology Co., Ltd.'s top technology area is H01J (Electric Discharge Tubes OR Discharge Lamps) with 80 patents. Grants appear in 11 CPC subclasses total.

Is Sumitomo Heavy Industries ION Technology Co., Ltd.'s patent grant rate increasing or decreasing?

Sumitomo Heavy Industries ION Technology Co., Ltd.'s recent grant velocity is -55% 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 Sumitomo Heavy Industries ION Technology Co., Ltd.'s patents?

Sumitomo Heavy Industries ION Technology Co., Ltd.'s patents average 17.4 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Heavy Industries ION Technology Co., Ltd.

Q: How is the Sumitomo Heavy Industries ION Technology 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 PatentsView assignee record - 80 granted patents across 11 technology areas, recorded in grant years 2015–2025. 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: H01J (Electric Discharge Tubes OR Discharge Lamps).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumitomo ranks #4,437 of 49,997 tracked US assignees by granted-patent volume, with 80 patents across 11 technology areas.

#4,437
of 49,997 US assignees by volume: Top 33%
by Innovation Score (41.4/100): 17.4
avg claims per patent: -55%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4437 · Foreign Corporation #4,437 · 80 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 80 grants
TOP-DECILE #4,437/49,997
PHOTO-FINISH Sila Nanotechnologies
CPC-FOCUS H01J · 11 areas
INNOV-PAR 41.4/100
CLAIMS-RICH 17.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -55% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Sila Nanotechnologies, 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.

Qualcomm Incorporated · highest

85
Akhan Semiconductor · near

41
Discma · near

41
Flexiworld · near

41
Sumitomo Heavy… · this assignee

41
Universitaet Zuerich · near

41
3D Lighting… · lowest

7

What this shows Sumitomo's Innovation Score is 41.4/100 (top 33% 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.

Where Sumitomo's grants concentrate

Sumitomo Heavy Industries ION Technology Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 100% of grants classified under H01J (Electric Discharge Tubes OR Discharge Lamps). Peak complete grant year is 2016 (23 grants) versus a trough of 2 in 2022. By volume, Sumitomo sits between Sila Nanotechnologies, Inc. and Toyo INK SC Holdings Co., Ltd..

Sumitomo's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumitomo Heavy Industries ION Technology Co., Ltd. moved from 23 to 14 grants (0.61x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Sila Nanotechnolo…

80
SK Biopharmaceuti…

80
Soken

80
SPM Oil & Gas

80
Silk Road Medical

80
Southern Research…

80
Syniverse

80
Toyo INK SC Holdi…

80
Sumitomo Heavy In… ◀

80

What this shows Sumitomo holds 80 patents at rank #4,435, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumitomo

By rank, the assignees closest to #4,435 in granted patent volume.

Leaders in H01J (Electric Discharge Tubes OR Discharge Lamps)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumitomo, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (41 here).

Flexiworld Technologies, Inc. 41 Discma AG 41 Universitaet Zuerich 41 Akhan Semiconductor, Inc. 41

Similar claim depth

Nearest assignees by average claims per patent (17.4 here).

Universite DE Montreal 17.4 avg TSI Group Co., Ltd. 17.4 avg Coupang Corp. 17.4 avg Suzhou Lekin Semiconductor Co., Ltd. 17.4 avg

Sumitomo's Innovation Score vs. every tracked assignee

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

41 Top 33% higher than 67% 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 · 2015–2025

Grants by year

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

View data table

Sumitomo Heavy Industries ION Technology Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	6.3%
2016	23	28.7%
2017	7	8.8%
2018	5	6.3%
2019	13	16.3%
2020	4	5.0%
2021	6	7.5%
2022	2	2.5%
2023	9	11.3%
2024	3	3.8%
2025partial year	3	3.8%

Which technologies does Sumitomo Heavy Industries ION Technology Co., Ltd. patent most?

H01J - Electric Discharge Tubes OR Discharge Lamps 80

H01L - Semiconductor Devices NOT Covered BY Class H10 14

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 7

H05H - Plasma Technique ; Production OF Accelerated Electrically-charged Particles OR OF NEUTRONS; Production OR Acceleration OF Neutral Molecular OR Atomic Beams 4

G21K - Techniques FOR Handling Particles OR Ionising Radiation NOT Otherwise Provided FOR; Irradiation DEVICES; Gamma RAY OR X-ray Microscopes 3

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 2

G01T - Measurement OF Nuclear OR X-radiation 2

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 2

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 1

H10D - Inorganic Electric Semiconductor Devices 1

H01Q - Antennas, i.e. Radio Aerials 1

Top 11 of 11 technology areas

Where it ranks

Overall rank by patents

#4,437

of 49,997 tracked assignees

Innovation Score

41.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Sumitomo Heavy Industries ION Technology Co., Ltd.'s patent record in context - here's where to go next.

Sumitomo Heavy Industries ION Technology Co., Ltd.'s lead technology class is H01J (Electric Discharge Tubes OR Discharge Lamps), 100% of its portfolio - see every assignee active in that class. Explore H01J
Ranked #4,437 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumitomo Heavy Industries ION Technology Co., Ltd. against Sila Nanotechnologies, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.4/100 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.