Where does Dow-mitsui Polychemicals Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dow-mitsui Polychemicals Co., Ltd. ranks #24,220 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 Dow-mitsui Polychemicals Co., Ltd. hold?

Dow-mitsui Polychemicals Co., Ltd. holds 11 US utility patents granted between 2022 and 2025, spanning 15 technology areas.

What is Dow-mitsui Polychemicals Co., Ltd.'s Innovation Score?

Dow-mitsui Polychemicals Co., Ltd. has an Innovation Score of 48.1 out of 100 (top 17% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dow-mitsui Polychemicals Co., Ltd. focus on?

Dow-mitsui Polychemicals Co., Ltd.'s top technology area is C08L (Compositions OF Macromolecular Compounds) with 8 patents, ranking #437 of 2,352 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

Is Dow-mitsui Polychemicals Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Dow-mitsui Polychemicals Co., Ltd..

What does claim depth mean for Dow-mitsui Polychemicals Co., Ltd.'s patents?

Dow-mitsui Polychemicals Co., Ltd.'s patents average 9.6 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 Dow-mitsui Polychemicals 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

Dow-mitsui Polychemicals Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 15 technology areas, recorded in grant years 2022–2025. 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: C08L (Compositions OF Macromolecular Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dow-mitsui ranks #24,220 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 15 technology areas.

#24,220
of 49,997 US assignees by volume: Top 17%
by Innovation Score (48.1/100): 9.6
avg claims per patent

USPTO PatentsView assignee plate

Corpus R24220 · Foreign Corporation #24,220 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 11 grants
MID-PACK #24,220/49,997
PHOTO-FINISH Dmar Engineering
CPC-FOCUS C08L · 15 areas
INNOV-PAR 48.1/100
CLAIMS-PAR 9.6 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Dmar Engineering, 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 Dow-mitsui’s 48.1 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 8.6 pts (18%) Velocity 20.0 pts (42%) Breadth 13.7 pts (28%) Claim depth 5.8 pts (12%)

Qualcomm Incorporated · highest

85
Dow-mitsui Polychemi… · this assignee

48
3D Lighting… · lowest

7

What this shows Dow-mitsui's Innovation Score is 48.1/100 (top 17% 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 Dow-mitsui?

Each dot is one of Dow-mitsui’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). Dow-mitsui’s own 9.6 claims/patent is at or below the 12.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dow-mitsui's grants concentrate

Dow-mitsui Polychemicals Co., Ltd. is a focused PatentsView assignee: 15 CPC subclasses with 72.7% of grants classified under C08L (Compositions OF Macromolecular Compounds). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2022. By volume, Dow-mitsui sits between Dmar Engineering, Inc. and Duncan Parking Technologies, Inc..

Dow-mitsui's three-year grant acceleration

Dow-mitsui Polychemicals Co., Ltd. shows 8 grants in 2022–2024 against only 0 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.

Dmar Engineering

11
Donghia

11
Dormakaba Schweiz

11
Dornbracht & KG

11
Doyle Manufacturi…

11
Drebo Werkzeugfab…

11
Drillform Technic…

11
Duncan Parking

11
Dow-mitsui Polych… ◀

11

What this shows Dow-mitsui holds 11 patents at rank #24,193, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dow-mitsui

By rank, the assignees closest to #24,193 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

Other assignees with the most granted patents in Dow-mitsui's primary technology class.

Dow-mitsui's Innovation Score vs. every tracked assignee

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

48 Top 17% higher than 83% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Dow-mitsui Polychemicals Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	1	9.1%
2023	2	18.2%
2024	5	45.5%
2025partial year	3	27.3%

Which technologies does Dow-mitsui Polychemicals Co., Ltd. patent most?

C08L - Compositions OF Macromolecular Compounds 8

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 6

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 6

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 4

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 3

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 2

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 2

A63B - Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

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

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 2

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

B29B - Preparation OR Pretreatment OF THE Material TO BE SHAPED; Making Granules OR PREFORMS; Recovery OF Plastics OR Other Constituents OF Waste Material Containing Plastics 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

Top 15 of 15 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

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

Dow-mitsui Polychemicals Co., Ltd.'s lead technology class is C08L (Compositions OF Macromolecular Compounds), 72.7% of its portfolio - see every assignee active in that class. Explore C08L
Ranked #24,220 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dow-mitsui Polychemicals Co., Ltd. against Dmar Engineering, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 48.1/100 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.