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

According to USPTO PatentsView (2015–2025 granted utility patents), Dowa Thermotech Co., Ltd. ranks #15,967 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 Dowa Thermotech Co., Ltd. hold?

Dowa Thermotech Co., Ltd. holds 18 US utility patents granted between 2017 and 2024, spanning 19 technology areas.

What is Dowa Thermotech Co., Ltd.'s Innovation Score?

Dowa Thermotech Co., Ltd. has an Innovation Score of 32.9 out of 100 (43rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Dowa Thermotech Co., Ltd.'s recent grant velocity is +25% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

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

Dowa Thermotech Co., Ltd.'s patents average 6.7 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 Dowa Thermotech 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

Dowa Thermotech Co., Ltd.

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

Dowa Thermotech 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 16 patents, ranking #174 of 1,658 assignees active in that subclass. Grants appear in 19 CPC subclasses total.

USPTO PatentsView assignee record - 18 granted patents across 19 technology areas, recorded in grant years 2017–2024. 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, Dowa ranks #15,967 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 19 technology areas.

#15,967
of 49,997 US assignees by volume: 43rd percentile
by Innovation Score (32.9/100): 6.7
avg claims per patent: +25%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15967 · Foreign Corporation #15,967 · 18 grants

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

GRANTS-MICRO 18 grants
MID-PACK #15,967/49,997
PHOTO-FINISH Daxin materials
CPC-FOCUS C23C · 19 areas
INNOV-THIN 32.9/100
CLAIMS-SPARSE 6.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +25% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Daxin materials 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 Dowa’s 32.9 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 10.2 pts (31%) Velocity 3.3 pts (10%) Breadth 15.4 pts (47%) Claim depth 4.0 pts (12%)

Qualcomm Incorporated · highest

85
Dowa Thermotech · this assignee

33
3D Lighting… · lowest

7

What this shows Dowa's Innovation Score is 32.9/100 (43rd percentile 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 Dowa?

Each dot is one of Dowa’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). Dowa’s own 6.7 claims/patent is at or below the 15.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dowa's grants concentrate

Dowa Thermotech Co., Ltd. is a focused PatentsView assignee: 19 CPC subclasses with 88.9% 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 2021 (4 grants) versus a trough of 1 in 2023. By volume, Dowa sits between Digital Endoscopy GMBH and DeguDent GmbH.

Dowa's three-year grant acceleration

Dowa Thermotech Co., Ltd. shows 4 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.

Digital Endoscopy

18
Dish Ukraine L L C

18
Doat Media

18
Dongguan Leader P…

18
DT Inventions

18
Daxin materials

18
Degen Medical

18
Degudent

18
Dowa Thermotech ◀

18

What this shows Dowa holds 18 patents at rank #15,952, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dowa

By rank, the assignees closest to #15,952 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Dowa's Innovation Score vs. every tracked assignee

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

33 43rd percentile higher than 43% 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 · 2017–2024

Grants by year

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

View data table

Dowa Thermotech Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	3	16.7%
2018	3	16.7%
2019	2	11.1%
2020	2	11.1%
2021	4	22.2%
2022	2	11.1%
2023	1	5.6%
2024	1	5.6%

Which technologies does Dowa Thermotech 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 16

C22C - Alloys 7

C21D - Modifying THE Physical Structure OF Ferrous METALS; General Devices FOR Heat Treatment OF Ferrous OR Non-ferrous Metals OR ALLOYS; Making Metal Malleable, e.g. BY Decarburisation OR Tempering 7

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 4

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 4

B23B - TURNING; Boring 4

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 4

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 2

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 2

C07C - Acyclic OR Carbocyclic Compounds 2

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 2

C03B - Manufacture, Shaping, OR Supplementary Processes 1

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 1

Y10T - Technical Subjects Covered BY Former US Classification 1

F16H - Gearing 1

Top 15 of 19 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

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

Dowa Thermotech 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), 88.9% of its portfolio - see every assignee active in that class. Explore C23C
Ranked #15,967 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dowa Thermotech Co., Ltd. against Digital Endoscopy GMBH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 32.9/100 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.