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

According to USPTO PatentsView (2015–2025 granted utility patents), DNF Co., Ltd ranks #11,624 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 DNF Co., Ltd hold?

DNF Co., Ltd holds 26 US utility patents granted between 2016 and 2025, spanning 16 technology areas.

What is DNF Co., Ltd's Innovation Score?

DNF Co., Ltd has an Innovation Score of 41.0 out of 100 (top 34% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

DNF Co., Ltd's recent grant velocity is +56% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for DNF Co., Ltd's patents?

DNF Co., Ltd's patents average 11.8 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 DNF 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

DNF Co., Ltd

Q: What technology areas does DNF Co., Ltd focus on?

DNF 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 21 patents, ranking #134 of 1,658 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 26 granted patents across 16 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: 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, DNF ranks #11,624 of 49,997 tracked US assignees by granted-patent volume, with 26 patents across 16 technology areas.

#11,624
of 49,997 US assignees by volume: Top 34%
by Innovation Score (41.0/100): 11.8
avg claims per patent: +56%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11624 · Foreign Corporation #11,624 · 26 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 26 grants
UPPER-Q #11,624/49,997
PHOTO-FINISH D3 Innovation
CPC-FOCUS C23C · 16 areas
INNOV-PAR 41.0/100
CLAIMS-PAR 11.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +56% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: D3 Innovation 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 DNF’s 41.0 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 11.4 pts (28%) Velocity 8.3 pts (20%) Breadth 14.1 pts (34%) Claim depth 7.1 pts (17%)

Qualcomm Incorporated · highest

85
National Dentex · near

41
Tesseract Ventures · near

41
DNF · this assignee

41
JMJ Holdings · near

41
Torqeedo · near

41
3D Lighting… · lowest

7

What this shows DNF's Innovation Score is 41.0/100 (top 34% 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 DNF?

Each dot is one of DNF’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). DNF’s own 11.8 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where DNF's grants concentrate

DNF Co., Ltd is a focused PatentsView assignee: 16 CPC subclasses with 80.8% 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 2022 (7 grants) versus a trough of 1 in 2016. By volume, DNF sits between D3 Innovation Inc. and DarkVision Technologies Inc..

DNF's three-year grant acceleration

DNF Co., Ltd shows 10 grants in 2022–2024 against only 8 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.

D3 Innovation

26
Dell Internationa…

26
Demerx

26
DMK Deutsches Mil…

26
Dominion Energy

26
Dorma Deutschland

26
DOT Incorporation

26
Darkvision

26
DNF ◀

26

What this shows DNF holds 26 patents at rank #11,620, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near DNF

By rank, the assignees closest to #11,620 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for DNF, neither rank-band nor same-CPC leaders (those blocks stay above). In C23C (Coating Metallic Material), DNF ranks #134 of 1,658 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (41 here).

Torqeedo GmbH 41 JMJ Holdings, LLC 41 Tesseract Ventures, LLC 41 National Dentex, LLC 41

DNF's Innovation Score vs. every tracked assignee

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

41 Top 34% higher than 66% 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

DNF Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	3.8%
2017	2	7.7%
2018	2	7.7%
2019	4	15.4%
2021	4	15.4%
2022	7	26.9%
2023	2	7.7%
2024	1	3.8%
2025partial year	3	11.5%

Which technologies does DNF 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 21

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 21

H01L - Semiconductor Devices NOT Covered BY Class H10 16

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

H10D - Inorganic Electric Semiconductor Devices 4

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 4

H10B - Electronic Memory Devices 3

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 2

H10K - Organic Electric Solid-state Devices 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

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 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

C08L - Compositions OF Macromolecular Compounds 1

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 1

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 1

Top 15 of 16 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

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

DNF 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), 80.8% of its portfolio - see every assignee active in that class. Explore C23C
Ranked #11,624 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare DNF Co., Ltd against D3 Innovation Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.0/100 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.