Where does Okuno Chemical Industries Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Okuno Chemical Industries Co., Ltd. ranks #27,031 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 Okuno Chemical Industries Co., Ltd. hold?

Okuno Chemical Industries Co., Ltd. holds 10 US utility patents granted between 2017 and 2025, spanning 20 technology areas.

What is Okuno Chemical Industries Co., Ltd.'s Innovation Score?

Okuno Chemical Industries Co., Ltd. has an Innovation Score of 36.9 out of 100 (top 45% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Okuno Chemical Industries Co., Ltd.'s patent grant rate increasing or decreasing?

Okuno Chemical Industries Co., Ltd.'s recent grant velocity is -20% 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 Okuno Chemical Industries Co., Ltd.'s patents?

Okuno Chemical Industries Co., Ltd.'s patents average 14.0 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 Okuno Chemical Industries 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

Okuno Chemical Industries Co., Ltd.

Q: What technology areas does Okuno Chemical Industries Co., Ltd. focus on?

Okuno Chemical Industries Co., Ltd.'s top technology area is 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) with 9 patents. Grants appear in 20 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 20 technology areas, recorded in grant years 2017–2025. 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: 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 Evap).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Okuno ranks #27,031 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 20 technology areas.

#27,031
of 49,997 US assignees by volume: Top 45%
by Innovation Score (36.9/100): 14.0
avg claims per patent: -20%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R27031 · Foreign Corporation #27,031 · 10 grants

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

GRANTS-MICRO 10 grants
MID-PACK #27,031/49,997
PHOTO-FINISH Ocunexus Therapeutics
CPC-FOCUS C23C · 20 areas
INNOV-THIN 36.9/100
CLAIMS-RICH 14.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -20% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ocunexus Therapeutics, 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
Okuno Chemical… · this assignee

37
3D Lighting… · lowest

7

What this shows Okuno's Innovation Score is 36.9/100 (top 45% 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 Okuno's grants concentrate

Okuno Chemical Industries Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 90% of grants classified under 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 Evap). Peak complete grant year is 2018 (3 grants) versus a trough of 1 in 2017. By volume, Okuno sits between Ocunexus Therapeutics, Inc. and Omnivision Technologies (SHANGHAI) Co., Ltd..

Okuno's three-year grant acceleration

Okuno Chemical Industries Co., Ltd. shows 2 grants in 2022–2024 against only 3 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.

Ocunexus Therapeu…

10
ODL Incorporated

10
Okamoto Machine T…

10
Okayama Prefecture

10
Olababy Incorpora…

10
Omni Consumer Pro…

10
Omni Solutions

10
Omnivision (Shang…

10
Okuno Chemical In… ◀

10

What this shows Okuno holds 10 patents at rank #27,015, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Okuno

By rank, the assignees closest to #27,015 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Okuno's Innovation Score vs. every tracked assignee

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

37 Top 45% higher than 55% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Okuno Chemical Industries Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	10.0%
2018	3	30.0%
2019	1	10.0%
2020	1	10.0%
2021	1	10.0%
2023	1	10.0%
2024	1	10.0%
2025partial year	1	10.0%

Which technologies does Okuno Chemical Industries Co., Ltd. patent most?

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 9

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 6

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 3

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 2

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

C23F - Non-mechanical Removal OF Metallic Material From Surface ; Inhibiting Corrosion OF Metallic Material OR Incrustation IN GENERAL; Multi-step Processes FOR Surface Treatment OF Metallic Material Involving AT Least ONE Process Provided FOR IN Class C23 AND AT Least ONE Process Covered BY Subclass C21d 2

C25F - Processes FOR THE Electrolytic Removal OF Materials From OBJECTS; Apparatus Therefor 2

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 2

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

C25B - Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor 1

C23G - Cleaning OR De-greasing OF Metallic Material BY Chemical Methods Other Than Electrolysis 1

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

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

Top 15 of 20 technology areas

Where it ranks

Overall rank by patents

#27,031

of 49,997 tracked assignees

Innovation Score

36.9 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

Okuno Chemical Industries Co., Ltd.'s patent record in context - here's where to go next.

Okuno Chemical Industries Co., Ltd.'s lead technology class is 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 Evap), 90% of its portfolio - see every assignee active in that class. Explore C23C
Ranked #27,031 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Okuno Chemical Industries Co., Ltd. against Ocunexus Therapeutics, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 36.9/100 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.