USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Mitsui Chemicals, Inc.

USPTO PatentsView assignee record - 649 granted patents across 154 technology areas, active 2015–2025. 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 · May 15, 2026

Explore the portfolio See the ranking

649

Total patents granted

154

CPC technology areas

11.8

Avg claims per patent

-14%

5-year filing velocity

The verdict

Mitsui holds 649 US patents across 154 technology areas, rank #699 of 50,000 tracked assignees.

#699
of 50,000 US assignees by volume: Top 3%
by Innovation Score (61.0/100): 11.8
avg claims per patent: -14%
filing velocity, last 5 yrs

Portfolio overview

Mitsui Chemicals, Inc. has been granted 649 US utility patents between 2015 and 2025, placing Mitsui Chemicals, Inc. at rank #699 across all assignees tracked by PlainPatent. This portfolio spans 154 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.8 claims per patent with primary concentration in C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS). As a Foreign Corporation, Mitsui Chemicals, Inc. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Mitsui sits between British Telecommunications Public Limited Company (651 patents, rank #695) and Palo Alto Networks, Inc. (646 patents, rank #703) - the closest US assignees by grant volume. The composite Innovation Score of 61.0/100 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. Between 2020 and 2025 the company received 301 grants, compared with 348 in the 2015–2019 window, a -14% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Mitsui Chemicals, Inc.'s 11.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Mitsui Chemicals, Inc. against peers pursuing similar technology classes.

British Telecommu…

651
BYD

651
TIME Warner Cable…

651
Huawei Device

649
Mitsui Chemicals ◀

649
Continental Autom…

648
CITY University O…

646
Goertek

646
Palo Alto Networks

646

What this shows Mitsui holds 649 patents at rank #699, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsui

By rank, the assignees closest to #699 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

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

Mitsui's Innovation Score vs. every tracked assignee

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

61 Top 3% higher than 97% 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 · 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

Mitsui Chemicals, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	87	13.4%
2016	57	8.8%
2017	65	10.0%
2018	73	11.2%
2019	66	10.2%
2020	52	8.0%
2021	47	7.2%
2022	63	9.7%
2023	49	7.6%
2024	51	7.9%
2025	39	6.0%

Which technologies does Mitsui Chemicals, Inc. patent most?

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 180

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 178

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 148

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 121

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 97

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 88

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 83

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 78

G02C - SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES 78

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 77

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 61

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 54

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 54

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 48

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 43

Top 15 of 154 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#699

Across all tracked assignees

Innovation Score

61.0 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 Mitsui Chemicals, Inc. hold?

Mitsui Chemicals, Inc. holds 649 US granted patents filed between 2015 and 2025, spanning 154 technology areas.

What is Mitsui Chemicals, Inc.'s Innovation Score?

Mitsui Chemicals, Inc. has an Innovation Score of 61.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mitsui Chemicals, Inc. focus on?

Mitsui Chemicals, Inc.'s top technology area is C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS) with 180 patents. The company has filed patents in 154 CPC subclasses total.

Is Mitsui Chemicals, Inc.'s patent filing rate increasing or decreasing?

Mitsui Chemicals, Inc.'s recent filing velocity is -14% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Mitsui Chemicals, Inc.'s patents?

Mitsui Chemicals, Inc.'s patents average 11.8 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Mitsui Chemicals, Inc. 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

Mitsui's 649 grants land it in the top 3% 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 - Mitsui ranks #699 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 · 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.