USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sekisui Chemical Co., Ltd.

USPTO PatentsView assignee record - 565 granted patents across 154 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

565

Total patents granted

154

CPC technology areas

11.0

Avg claims per patent

+93%

5-year filing velocity

The verdict

Sekisui holds 565 US patents across 154 technology areas, rank #813 of 50,000 tracked assignees.

#813
of 50,000 US assignees by volume: Top 3%
by Innovation Score (60.2/100): 11.0
avg claims per patent: +93%
filing velocity, last 5 yrs

Portfolio overview

Sekisui Chemical Co., Ltd. has been granted 565 US utility patents between 2015 and 2025, placing Sekisui Chemical Co., Ltd. at rank #813 across all assignees tracked by PlainPatent. This portfolio spans 154 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.0 claims per patent with primary concentration in B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM). As a Foreign Corporation, Sekisui Chemical Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Sekisui sits between The Cleveland Clinic Foundation (570 patents, rank #809) and Gilead Sciences, Inc. (561 patents, rank #817) - the closest US assignees by grant volume. The composite Innovation Score of 60.2/100 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 372 grants, compared with 193 in the 2015–2019 window, a +93% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Sekisui Chemical Co., Ltd.'s 11.0 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 Sekisui Chemical Co., Ltd. against peers pursuing similar technology classes.

The Cleveland Cli…

570
Wonderland Switze…

570
Hill-rom Services

569
Tetra Laval Holdi…

568
Sekisui Chemical ◀

565
Polaris Industries

563
Under Armour

563
Arts

561
Gilead Sciences

561

What this shows Sekisui holds 565 patents at rank #813, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sekisui

By rank, the assignees closest to #813 in granted patent volume.

Leaders in B32B (Layered Products)

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

Sekisui's Innovation Score vs. every tracked assignee

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

60 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

Sekisui Chemical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	27	4.8%
2016	34	6.0%
2017	35	6.2%
2018	38	6.7%
2019	59	10.4%
2020	69	12.2%
2021	63	11.2%
2022	77	13.6%
2023	56	9.9%
2024	60	10.6%
2025	47	8.3%

Which technologies does Sekisui Chemical Co., Ltd. patent most?

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 231

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 151

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 124

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 116

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 86

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 73

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 62

B60J - WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES 50

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 50

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 49

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 49

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 47

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 46

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 39

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 36

Top 15 of 154 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#813

Across all tracked assignees

Innovation Score

60.2 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 Sekisui Chemical Co., Ltd. hold?

Sekisui Chemical Co., Ltd. holds 565 US granted patents filed between 2015 and 2025, spanning 154 technology areas.

What is Sekisui Chemical Co., Ltd.'s Innovation Score?

Sekisui Chemical Co., Ltd. has an Innovation Score of 60.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sekisui Chemical Co., Ltd. focus on?

Sekisui Chemical Co., Ltd.'s top technology area is B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM) with 231 patents. The company has filed patents in 154 CPC subclasses total.

Is Sekisui Chemical Co., Ltd.'s patent filing rate increasing or decreasing?

Sekisui Chemical Co., Ltd.'s recent filing velocity is +93% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Sekisui Chemical Co., Ltd.'s patents?

Sekisui Chemical Co., Ltd.'s patents average 11.0 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sekisui Chemical 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

Sekisui's 565 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 - Sekisui ranks #813 of 50,000. Top 50 holders
Most of this portfolio concentrates in B32B - see who else leads that technology area. B32B 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.