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

According to USPTO PatentsView (2015–2025 granted utility patents), Maintech Co., Ltd. ranks #24,746 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 Maintech Co., Ltd. hold?

Maintech Co., Ltd. holds 11 US utility patents granted between 2015 and 2025, spanning 20 technology areas.

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

Maintech Co., Ltd. has an Innovation Score of 33.3 out of 100 (44th 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 Maintech Co., Ltd. focus on?

Maintech Co., Ltd.'s top technology area is D21F (Paper-making MACHINES; Methods OF Producing Paper Thereon) with 8 patents, ranking #22 of 93 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

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

Maintech Co., Ltd.'s recent grant velocity is +50% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Maintech Co., Ltd.'s patents average 6.5 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 Maintech 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

Maintech Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 20 technology areas, recorded in grant years 2015–2025. 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: D21F (Paper-making MACHINES; Methods OF Producing Paper Thereon).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Maintech ranks #24,746 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 20 technology areas.

#24,746
of 49,997 US assignees by volume: 44th percentile
by Innovation Score (33.3/100): 6.5
avg claims per patent: +50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24746 · Foreign Corporation #24,746 · 11 grants

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

GRANTS-MICRO 11 grants
MID-PACK #24,746/49,997
PHOTO-FINISH Magisto
CPC-FOCUS D21F · 20 areas
INNOV-THIN 33.3/100
CLAIMS-SPARSE 6.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Magisto Ltd. (±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 Maintech’s 33.3 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 8.6 pts (26%) Velocity 5.0 pts (15%) Breadth 15.8 pts (47%) Claim depth 3.9 pts (12%)

Qualcomm Incorporated · highest

85
Maintech · this assignee

33
3D Lighting… · lowest

7

What this shows Maintech's Innovation Score is 33.3/100 (44th 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 Maintech?

Each dot is one of Maintech’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). Maintech’s own 6.5 claims/patent is at or below the 14.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Maintech's grants concentrate

Maintech Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 72.7% of grants classified under D21F (Paper-making MACHINES; Methods OF Producing Paper Thereon). Peak complete grant year is 2020 (2 grants) versus a trough of 1 in 2015. By volume, Maintech sits between Magisto Ltd. and Masarykova Univerzita.

Maintech's three-year grant acceleration

Maintech Co., Ltd. shows 3 grants in 2022–2024 against only 4 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.

Magisto

11
Magswitch Technol…

11
Mahle Electric Dr…

11
Maia Pharmaceutic…

11
Manta Sleep

11
Markwest Energy P…

11
Maruzen

11
Masarykova Univer…

11
Maintech ◀

11

What this shows Maintech holds 11 patents at rank #24,728, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Maintech

By rank, the assignees closest to #24,728 in granted patent volume.

Leaders in D21F (Paper-making Machines)

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

Maintech's Innovation Score vs. every tracked assignee

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

33 44th percentile higher than 44% 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 · 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

Maintech Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	9.1%
2016	1	9.1%
2018	1	9.1%
2019	1	9.1%
2020	2	18.2%
2021	1	9.1%
2022	1	9.1%
2024	2	18.2%
2025partial year	1	9.1%

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

D21F - Paper-making MACHINES; Methods OF Producing Paper Thereon 8

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 6

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 6

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 4

C08L - Compositions OF Macromolecular Compounds 4

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 4

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 3

D21C - Production OF Cellulose BY Removing Non-cellulose Substances From Cellulose-containing MATERIALS; Regeneration OF Pulping LIQUORS; Apparatus Therefor 3

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 2

D06M - Treatment, NOT Provided FOR Elsewhere IN Class D06, OF Fibres, Threads, Yarns, Fabrics, Feathers OR Fibrous Goods Made From Such Materials 2

H04N - Pictorial Communication, e.g. Television 2

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 2

D06N - Wall, Floor, OR Like Covering Materials, e.g. Linoleum, Oilcloth, Artificial Leather, Roofing Felt, Consisting OF A Fibrous WEB Coated With A Layer OF Macromolecular MATERIAL; Flexible Sheet Material NOT Otherwise Provided FOR 1

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

Top 15 of 20 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

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

Maintech Co., Ltd.'s lead technology class is D21F (Paper-making MACHINES; Methods OF Producing Paper Thereon), 72.7% of its portfolio - see every assignee active in that class. Explore D21F
Ranked #24,746 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Maintech Co., Ltd. against Magisto Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.3/100 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.