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

According to USPTO PatentsView (2015–2025 granted utility patents), Dongwoo HST Co., Ltd. ranks #46,261 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 Dongwoo HST Co., Ltd. hold?

Dongwoo HST Co., Ltd. holds 5 US utility patents granted between 2019 and 2025, spanning 12 technology areas.

What is Dongwoo HST Co., Ltd.'s Innovation Score?

Dongwoo HST Co., Ltd. has an Innovation Score of 23.1 out of 100 (12th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Dongwoo HST Co., Ltd.'s recent grant velocity is +200% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Dongwoo HST Co., Ltd.'s patents average 7.8 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 Dongwoo HST 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

Dongwoo HST Co., Ltd.

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

Dongwoo HST 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 4 patents, ranking #522 of 1,658 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 12 technology areas, recorded in grant years 2019–2025. 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dongwoo ranks #46,261 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 12 technology areas.

#46,261
of 49,997 US assignees by volume: 12th percentile
by Innovation Score (23.1/100): 7.8
avg claims per patent: +200%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R46261 · Foreign Corporation #46,261 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #46,261/49,997
PHOTO-FINISH Dongguan Yuanchuang…
CPC-FOCUS C23C · 12 areas
INNOV-THIN 23.1/100
CLAIMS-SPARSE 7.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +200% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Dongguan Yuanchuang Electronic Technology Co., Ltd. (±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 Dongwoo’s 23.1 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 6.2 pts (27%) Velocity 0.0 pts (0%) Breadth 12.2 pts (53%) Claim depth 4.7 pts (20%)

Qualcomm Incorporated · highest

85
Dongwoo HST · this assignee

23
3D Lighting… · lowest

7

What this shows Dongwoo's Innovation Score is 23.1/100 (12th 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 Dongwoo?

Each dot is one of Dongwoo’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). Dongwoo’s own 7.8 claims/patent is ABOVE the 7.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Dongwoo's grants concentrate

Dongwoo HST Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 80% 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 2020 (3 grants) versus a trough of 1 in 2019. By volume, Dongwoo sits between Dongguan Yuanchuang Electronic Technology Co., Ltd. and DOPE.SECURITY Inc..

Dongguan Yuanchua…

5
Dongguan Yuanshen…

5
Dongguk Universit…

5
Dongshin Polymer

5
Dongwoun Industri…

5
Doosan Enerbnlity

5
Doosan Solus

5
DOPE Security

5
Dongwoo HST ◀

5

What this shows Dongwoo holds 5 patents at rank #46,143, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dongwoo

By rank, the assignees closest to #46,143 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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

Dongwoo's Innovation Score vs. every tracked assignee

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

23 12th percentile higher than 12% 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 · 2019–2025

Grants by year

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

View data table

Dongwoo HST Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	20.0%
2020	3	60.0%
2025partial year	1	20.0%

Which technologies does Dongwoo HST 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 4

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 3

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 1

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 1

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

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 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

B41N - Printing Plates OR Foils ; Materials FOR Surfaces Used IN Printing Machines FOR Printing, Inking, Damping, OR THE LIKE; Preparing Such Surfaces FOR USE AND Conserving Them 1

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

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 1

Top 12 of 12 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

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

Dongwoo HST 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% of its portfolio - see every assignee active in that class. Explore C23C
Ranked #46,261 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dongwoo HST Co., Ltd. against Dongguan Yuanchuang Electronic Technology Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.1/100 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.