USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Dow-mitsui Polychemicals Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 15 technology areas, active 2022–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.6

Avg claims per patent

5-year filing velocity

The verdict

Dow-mitsui holds 11 US patents across 15 technology areas, rank #24,193 of 50,000 tracked assignees.

#24,193
of 50,000 US assignees by volume: Top 17%
by Innovation Score (48.1/100): 9.6
avg claims per patent

Portfolio overview

Dow-mitsui Polychemicals Co., Ltd. has been granted 11 US utility patents between 2022 and 2025, placing Dow-mitsui Polychemicals Co., Ltd. at rank #24,193 across all assignees tracked by PlainPatent. This portfolio spans 15 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.6 claims per patent with primary concentration in C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS). As a Foreign Corporation, Dow-mitsui Polychemicals Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Dow-mitsui sits between DMAR Engineering, Inc. (11 patents, rank #24,189) and Duncan Parking Technologies, Inc. (11 patents, rank #24,197) - the closest US assignees by grant volume. The composite Innovation Score of 48.1/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Historical data spans 2022 through 2025, with 11 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Dow-mitsui Polychemicals Co., Ltd.'s 9.6 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 15 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Dow-mitsui Polychemicals Co., Ltd. against peers pursuing similar technology classes.

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.

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

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

48 Top 17% higher than 83% of 50,000 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%
2025	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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Where it ranks

Overall rank by patents

#24,193

Across all tracked assignees

Innovation Score

48.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Dow-mitsui Polychemicals Co., Ltd. hold?

Dow-mitsui Polychemicals Co., Ltd. holds 11 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 15 CPC subclasses total.

Is Dow-mitsui Polychemicals Co., Ltd.'s patent filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Dow-mitsui's 11 grants land it in the top 17% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Dow-mitsui ranks #24,193 of 50,000. Top 50 holders
Most of this portfolio concentrates in C08L - see who else leads that technology area. C08L leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.