Where does Purex Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Purex Co., Ltd. ranks #20,283 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 Purex Co., Ltd. hold?

Purex Co., Ltd. holds 14 US utility patents granted between 2017 and 2025, spanning 9 technology areas.

What is Purex Co., Ltd.'s Innovation Score?

Purex Co., Ltd. has an Innovation Score of 31.5 out of 100 (38th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Purex Co., Ltd. focus on?

Purex Co., Ltd.'s top technology area is D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles) with 14 patents, ranking #29 of 220 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Purex Co., Ltd.'s patent grant rate increasing or decreasing?

Purex Co., Ltd.'s recent grant velocity is +450% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Purex Co., Ltd.'s patents average 10.0 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 Purex 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

Purex Co., Ltd.

USPTO PatentsView assignee record - 14 granted patents across 9 technology areas, recorded in grant years 2017–2025. 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: D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Purex ranks #20,283 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 9 technology areas.

#20,283
of 49,997 US assignees by volume: 38th percentile
by Innovation Score (31.5/100): 10.0
avg claims per patent: +450%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20283 · Foreign Corporation #20,283 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 14 grants
MID-PACK #20,283/49,997
PHOTO-FINISH PacTec
CPC-NARROW D06F · 9 areas
INNOV-THIN 31.5/100
CLAIMS-PAR 10.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +450% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: PacTec, 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 Purex’s 31.5 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 9.4 pts (30%) Velocity 5.6 pts (18%) Breadth 10.6 pts (34%) Claim depth 6.0 pts (19%)

Qualcomm Incorporated · highest

85
Purex · this assignee

32
3D Lighting… · lowest

7

What this shows Purex's Innovation Score is 31.5/100 (38th percentile 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 Purex?

Each dot is one of Purex’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). Purex’s own 10.0 claims/patent is at or below the 15.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Purex's grants concentrate

Purex Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 100% of grants classified under D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles). Peak complete grant year is 2022 (4 grants) versus a trough of 1 in 2024. By volume, Purex sits between Primus Power Corporation and PathAI, Inc..

Purex's three-year grant acceleration

Purex Co., Ltd. shows 5 grants in 2022–2024 against only 6 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.

Primus Power

14
Prolynx

14
Prytime Medical D…

14
PTM Packaging Too…

14
Pxise Energy Solu…

14
Pactec

14
Panosense

14
Pathai

14
Purex ◀

14

What this shows Purex holds 14 patents at rank #20,243, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Purex

By rank, the assignees closest to #20,243 in granted patent volume.

Leaders in D06F (Laundering)

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

Purex's Innovation Score vs. every tracked assignee

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

32 38th percentile higher than 38% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Purex Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	2	14.3%
2020	3	21.4%
2021	3	21.4%
2022	4	28.6%
2024	1	7.1%
2025partial year	1	7.1%

Which technologies does Purex Co., Ltd. patent most?

D06F - Laundering, Drying, Ironing, Pressing OR Folding Textile Articles 14

D06C - Finishing, Dressing, Tentering OR Stretching Textile Fabrics 8

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 3

D06H - Marking, Inspecting, Seaming OR Severing Textile Materials 2

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 2

G06T - Image Data Processing OR Generation, IN General 1

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 1

G06V - Image OR Video Recognition OR Understanding 1

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 1

Top 9 of 9 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

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

Purex Co., Ltd.'s lead technology class is D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles), 100% of its portfolio - see every assignee active in that class. Explore D06F
Ranked #20,283 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Purex Co., Ltd. against Primus Power Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.5/100 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.