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

According to USPTO PatentsView (2015–2025 granted utility patents), Dongjin Semichem Co., Ltd. ranks #8,188 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 Dongjin Semichem Co., Ltd. hold?

Dongjin Semichem Co., Ltd. holds 39 US utility patents granted between 2015 and 2025, spanning 34 technology areas.

What is Dongjin Semichem Co., Ltd.'s Innovation Score?

Dongjin Semichem Co., Ltd. has an Innovation Score of 44.4 out of 100 (top 26% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Dongjin Semichem 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 Dongjin Semichem Co., Ltd.'s patents?

Dongjin Semichem Co., Ltd.'s patents average 12.8 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 Dongjin Semichem 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

Dongjin Semichem Co., Ltd.

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

Dongjin Semichem Co., Ltd.'s top technology area is 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) with 19 patents, ranking #168 of 1,818 assignees active in that subclass. Grants appear in 34 CPC subclasses total.

USPTO PatentsView assignee record - 39 granted patents across 34 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: 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 Materi).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dongjin ranks #8,188 of 49,997 tracked US assignees by granted-patent volume, with 39 patents across 34 technology areas.

#8,188
of 49,997 US assignees by volume: Top 26%
by Innovation Score (44.4/100): 12.8
avg claims per patent: -20%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8188 · Foreign Corporation #8,188 · 39 grants

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

GRANTS-SMALL 39 grants
UPPER-Q #8,188/49,997
PHOTO-FINISH Conexant Systems
CPC-FOCUS C09D · 34 areas
INNOV-PAR 44.4/100
CLAIMS-RICH 12.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -20% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Conexant Systems, LLC (±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 Dongjin’s 44.4 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 12.7 pts (29%) Velocity 3.3 pts (7%) Breadth 20.6 pts (47%) Claim depth 7.7 pts (17%)

Qualcomm Incorporated · highest

85
Dongjin Semichem · this assignee

44
Nippon Paint… · near

44
PEPPERL+FUCHS · near

44
Trumpf Lasersystems… · near

44
Universiti Brunei… · near

44
3D Lighting… · lowest

7

What this shows Dongjin's Innovation Score is 44.4/100 (top 26% 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 Dongjin?

Each dot is one of Dongjin’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). Dongjin’s own 12.8 claims/patent is at or below the 17.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dongjin's grants concentrate

Dongjin Semichem Co., Ltd. is a focused PatentsView assignee: 34 CPC subclasses with 48.7% of grants classified under 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 Materi). Peak complete grant year is 2019 (5 grants) versus a trough of 2 in 2023. By volume, Dongjin sits between Conexant Systems, LLC and E-link Plastic & Metal Industrial Co., Ltd..

Dongjin's three-year grant acceleration

Dongjin Semichem Co., Ltd. shows 7 grants in 2022–2024 against only 14 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.

Conexant Systems

39
Curemark

39
Cydex Pharmaceuti…

39
Doheny EYE Instit…

39
Dsm&t

39
Deep Science

39
Dick's Sporting G…

39
E-link Plastic &…

39
Dongjin Semichem ◀

39

What this shows Dongjin holds 39 patents at rank #8,186, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dongjin

By rank, the assignees closest to #8,186 in granted patent volume.

Leaders in C09D (Coating Compositions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Dongjin, neither rank-band nor same-CPC leaders (those blocks stay above). In C09D (Coating Compositions), Dongjin ranks #168 of 1,818 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (44 here).

PEPPERL+FUCHS GMBH 44 Nippon Paint Automotive Coatings Co., Ltd. 44 Universiti Brunei Darussalam 44 Trumpf Lasersystems for Semiconductor Manufacturing GmbH 44

Dongjin's Innovation Score vs. every tracked assignee

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

44 Top 26% higher than 74% 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

Dongjin Semichem Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.3%
2016	4	10.3%
2017	3	7.7%
2018	4	10.3%
2019	5	12.8%
2020	5	12.8%
2021	4	10.3%
2022	3	7.7%
2023	2	5.1%
2024	2	5.1%
2025partial year	3	7.7%

Which technologies does Dongjin Semichem Co., Ltd. patent most?

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 19

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 12

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 12

H01L - Semiconductor Devices NOT Covered BY Class H10 11

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 10

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; 8

C07D - Heterocyclic Compounds 6

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 5

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 5

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 5

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 4

H10K - Organic Electric Solid-state Devices 4

C08L - Compositions OF Macromolecular Compounds 4

C09G - Polishing Compositions ; SKI Waxes 4

Top 15 of 34 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

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

Dongjin Semichem Co., Ltd.'s lead technology class is 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 Materi), 48.7% of its portfolio - see every assignee active in that class. Explore C09D
Ranked #8,188 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dongjin Semichem Co., Ltd. against Conexant Systems, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.4/100 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.