USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Corelex Shin-ei Co., Ltd.

USPTO PatentsView assignee record - 10 granted patents across 13 technology areas, active 2021–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B65H (HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

5.9

Avg claims per patent

5-year filing velocity

The verdict

Corelex holds 10 US patents across 13 technology areas, rank #25,994 of 50,000 tracked assignees.

#25,994
of 50,000 US assignees by volume: Top 25%
by Innovation Score (44.6/100): 5.9
avg claims per patent

Portfolio overview

Corelex Shin-ei Co., Ltd. has been granted 10 US utility patents between 2021 and 2025, placing Corelex Shin-ei Co., Ltd. at rank #25,994 across all assignees tracked by PlainPatent. This portfolio spans 13 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.9 claims per patent with primary concentration in B65H (HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES). As a Foreign Corporation, Corelex Shin-ei Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Corelex sits between Connectquest Llc (10 patents, rank #25,990) and Cosmecca Korea Co., Ltd. (10 patents, rank #25,998) - the closest US assignees by grant volume. The composite Innovation Score of 44.6/100 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 2021 through 2025, with 10 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. Corelex Shin-ei Co., Ltd.'s 5.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 13 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Corelex Shin-ei Co., Ltd. against peers pursuing similar technology classes.

Connectquest

10
Contentguard Hold…

10
Contipro A S

10
Contramed

10
Corners

10
Corning Gilbert

10
Cosentino Researc…

10
Cosmecca Korea

10
Corelex Shin-ei ◀

10

What this shows Corelex holds 10 patents at rank #25,994, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Corelex

By rank, the assignees closest to #25,994 in granted patent volume.

Leaders in B65H (Handling THIN OR Filamentary Material)

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

Corelex's Innovation Score vs. every tracked assignee

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

45 Top 25% higher than 75% 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 · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Corelex Shin-ei Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	2	20.0%
2022	4	40.0%
2023	1	10.0%
2024	1	10.0%
2025	2	20.0%

Which technologies does Corelex Shin-ei Co., Ltd. patent most?

B65H - HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES 5

A47K - SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR ; TOILET ACCESSORIES 4

D21H - PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR 3

B65B - MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING 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 3

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 2

B31F - MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER 2

B31C - MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER 1

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 1

B31D - MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C 1

D21F - PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON 1

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

B26D - CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING 1

Top 13 of 13 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Where it ranks

Overall rank by patents

#25,994

Across all tracked assignees

Innovation Score

44.6 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 Corelex Shin-ei Co., Ltd. hold?

Corelex Shin-ei Co., Ltd. holds 10 US granted patents filed between 2021 and 2025, spanning 13 technology areas.

What is Corelex Shin-ei Co., Ltd.'s Innovation Score?

Corelex Shin-ei Co., Ltd. has an Innovation Score of 44.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Corelex Shin-ei Co., Ltd. focus on?

Corelex Shin-ei Co., Ltd.'s top technology area is B65H (HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES) with 5 patents. The company has filed patents in 13 CPC subclasses total.

Is Corelex Shin-ei Co., Ltd.'s patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Corelex Shin-ei Co., Ltd..

What does claim depth mean for Corelex Shin-ei Co., Ltd.'s patents?

Corelex Shin-ei Co., Ltd.'s patents average 5.9 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Corelex Shin-ei 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

Corelex's 10 grants land it in the top 25% 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 - Corelex ranks #25,994 of 50,000. Top 50 holders
Most of this portfolio concentrates in B65H - see who else leads that technology area. B65H 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.