Where does Idemitsu Kosan Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Idemitsu Kosan Co., Ltd. ranks #494 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 Idemitsu Kosan Co., Ltd. hold?

Idemitsu Kosan Co., Ltd. holds 905 US utility patents granted between 2015 and 2025, spanning 115 technology areas.

What is Idemitsu Kosan Co., Ltd.'s Innovation Score?

Idemitsu Kosan Co., Ltd. has an Innovation Score of 65.0 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Idemitsu Kosan Co., Ltd. focus on?

Idemitsu Kosan Co., Ltd.'s top technology area is H10K (Organic Electric Solid-state Devices) with 394 patents, ranking #15 of 791 assignees active in that subclass. Grants appear in 115 CPC subclasses total.

Is Idemitsu Kosan Co., Ltd.'s patent grant rate increasing or decreasing?

Idemitsu Kosan Co., Ltd.'s recent grant velocity is -15% 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 Idemitsu Kosan Co., Ltd.'s patents?

Idemitsu Kosan Co., Ltd.'s patents average 18.0 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 Idemitsu Kosan 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

Idemitsu Kosan Co., Ltd.

USPTO PatentsView assignee record - 905 granted patents across 115 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: H10K (Organic Electric Solid-state Devices).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Idemitsu ranks #494 of 49,997 tracked US assignees by granted-patent volume, with 905 patents across 115 technology areas.

#494
of 49,997 US assignees by volume: Top 1%
by Innovation Score (65.0/100): 18.0
avg claims per patent: -15%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R494 · Foreign Corporation #494 · 905 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-RICH · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MID 905 grants
TOP-DECILE #494/49,997
PHOTO-FINISH Brunswick
CPC-WIDE H10K · 115 areas
INNOV-STRONG 65.0/100
CLAIMS-RICH 18.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -15% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Brunswick Corporation (±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 Idemitsu’s 65.0 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 23.5 pts (36%) Velocity 5.7 pts (9%) Breadth 25.0 pts (38%) Claim depth 10.8 pts (17%)

Qualcomm Incorporated · highest

85
Mazor Robotics · near

65
Schneider Electric USA · near

65
Idemitsu Kosan · this assignee

65
Prime Planet Energy… · near

65
Synaptics Incorporated · near

65
3D Lighting… · lowest

7

What this shows Idemitsu's Innovation Score is 65.0/100 (top 1% 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 Idemitsu?

Each dot is one of Idemitsu’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). Idemitsu’s own 18.0 claims/patent is ABOVE the 14.9 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

How Idemitsu's grant cadence moved

Between 2020–2024, Idemitsu Kosan Co., Ltd. received 389 grants versus 459 in 2015–2019 (-15% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2015 at 101 grants and bottomed in 2024 at 60. Lead class H10K accounts for 43.5% of the portfolio across 115 subclasses. Volume neighbours: Silicon Motion, Inc. (#490) and OmniVision Technologies, Inc. (#498).

Idemitsu's three-year grant acceleration

From 2019–2021 to 2022–2024, Idemitsu Kosan Co., Ltd. moved from 256 to 219 grants (0.85x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,646. See the growth leaderboard.

Silicon Motion

910
Dyson Technology

908
Mcafee

906
Brunswick

905
Idemitsu Kosan ◀

905
Dolby Internation…

903
Koito Manufacturi…

902
BAE Systems Infor…

900
Omnivision

897

What this shows Idemitsu holds 905 patents at rank #494, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Idemitsu

By rank, the assignees closest to #494 in granted patent volume.

Leaders in H10K (Organic Electric Solid-state Devices)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Idemitsu, neither rank-band nor same-CPC leaders (those blocks stay above). In H10K (Organic Electric Solid-state Devices), Idemitsu ranks #15 of 791 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (65 here).

Prime Planet Energy & Solutions, Inc. 65 Synaptics Incorporated 65 Schneider Electric USA, Inc. 65 Mazor Robotics Ltd. 65

Similar claim depth

Nearest assignees by average claims per patent (18.0 here).

Saturn Licensing LLC 18.0 avg Guardian Glass, LLC 18.0 avg Saint-gobain Abrasives, Inc. 18.0 avg The University of North Carolina at Chapel Hill 18.0 avg

Idemitsu's Innovation Score vs. every tracked assignee

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

65 Top 1% higher than 99% 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

Idemitsu Kosan Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	101	11.2%
2016	78	8.6%
2017	98	10.8%
2018	96	10.6%
2019	86	9.5%
2020	80	8.8%
2021	90	9.9%
2022	93	10.3%
2023	66	7.3%
2024	60	6.6%
2025partial year	57	6.3%

Which technologies does Idemitsu Kosan Co., Ltd. patent most?

H10K - Organic Electric Solid-state Devices 394

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 344

C07D - Heterocyclic Compounds 269

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 213

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 212

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 138

C08L - Compositions OF Macromolecular Compounds 101

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 97

C07C - Acyclic OR Carbocyclic Compounds 82

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 73

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 67

C09B - Organic Dyes OR Closely-related Compounds FOR Producing Dyes ; , e.g. PIGMENTS; MORDANTS; Lakes 59

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 57

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 57

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 38

Top 15 of 115 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

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

Idemitsu Kosan Co., Ltd.'s lead technology class is H10K (Organic Electric Solid-state Devices), 43.5% of its portfolio - see every assignee active in that class. Explore H10K
Ranked #494 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Idemitsu Kosan Co., Ltd. against Silicon Motion, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 65.0/100 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.