Where does Maruzen Company Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Maruzen Company Limited ranks #24,756 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 Maruzen Company Limited hold?

Maruzen Company Limited holds 11 US utility patents granted between 2015 and 2021, spanning 3 technology areas.

What is Maruzen Company Limited's Innovation Score?

Maruzen Company Limited has an Innovation Score of 19.7 out of 100 (6th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Maruzen Company Limited's patent grant rate increasing or decreasing?

Maruzen Company Limited's recent grant velocity is -62% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Maruzen Company Limited's patents?

Maruzen Company Limited's patents average 8.3 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 Maruzen Company Limited 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

Maruzen Company Limited

Q: What technology areas does Maruzen Company Limited focus on?

Maruzen Company Limited's top technology area is F41B (Weapons FOR Projecting Missiles Without USE OF Explosive OR Combustible Propellant CHARGE; Weapons NOT Otherwise Provided FOR) with 11 patents, ranking #20 of 154 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

USPTO PatentsView assignee record - 11 granted patents across 3 technology areas, recorded in grant years 2015–2021. 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: F41B (Weapons FOR Projecting Missiles Without USE OF Explosive OR Combustible Propellant CHARGE; Weapons NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Maruzen ranks #24,756 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 3 technology areas.

#24,756
of 49,997 US assignees by volume: 6th percentile
by Innovation Score (19.7/100): 8.3
avg claims per patent: -62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24756 · Foreign Corporation #24,756 · 11 grants

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

GRANTS-MICRO 11 grants
MID-PACK #24,756/49,997
PHOTO-FINISH Maia Pharmaceuticals
CPC-NARROW F41B · 3 areas
INNOV-LOW 19.7/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Maia Pharmaceuticals, 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 Maruzen’s 19.7 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 (44%) Velocity 0.0 pts (0%) Breadth 6.1 pts (31%) Claim depth 5.0 pts (25%)

Qualcomm Incorporated · highest

85
Maruzen · this assignee

20
3D Lighting… · lowest

7

What this shows Maruzen's Innovation Score is 19.7/100 (6th 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 Maruzen?

Each dot is one of Maruzen’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). Maruzen’s own 8.3 claims/patent is ABOVE the 7.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Maruzen's grants concentrate

Maruzen Company Limited is a focused PatentsView assignee: 3 CPC subclasses with 100% of grants classified under F41B (Weapons FOR Projecting Missiles Without USE OF Explosive OR Combustible Propellant CHARGE; Weapons NOT Otherwise Provided FOR). Peak complete grant year is 2017 (4 grants) versus a trough of 1 in 2016. By volume, Maruzen sits between Maia Pharmaceuticals, Inc. and Maxine M. Thompson Trust.

Maia Pharmaceutic…

11
Maintech

11
Manta Sleep

11
Markwest Energy P…

11
Masarykova Univer…

11
Massachusetts Gen…

11
Mattur Holdings

11
Maxine M Thompson…

11
Maruzen ◀

11

What this shows Maruzen holds 11 patents at rank #24,731, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Maruzen

By rank, the assignees closest to #24,731 in granted patent volume.

Leaders in F41B (Weapons FOR Projecting Missiles Without USE OF Explosive…)

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

Maruzen's Innovation Score vs. every tracked assignee

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

20 6th percentile higher than 6% 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 · 2015–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Maruzen Company Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	18.2%
2016	1	9.1%
2017	4	36.4%
2019	1	9.1%
2020	2	18.2%
2021	1	9.1%

Which technologies does Maruzen Company Limited patent most?

F41B - Weapons FOR Projecting Missiles Without USE OF Explosive OR Combustible Propellant CHARGE; Weapons NOT Otherwise Provided FOR 11

F41A - Functional Features OR Details Common TO Both Smallarms AND Ordnance, e.g. CANNONS; Mountings FOR Smallarms OR Ordnance 7

F42B - Explosive Charges, e.g. FOR Blasting, Fireworks, Ammunition 1

Top 3 of 3 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

Maruzen Company Limited's patent record in context - here's where to go next.

Maruzen Company Limited's lead technology class is F41B (Weapons FOR Projecting Missiles Without USE OF Explosive OR Combustible Propellant CHARGE; Weapons NOT Otherwise Provided FOR), 100% of its portfolio - see every assignee active in that class. Explore F41B
Ranked #24,756 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Maruzen Company Limited against Maia Pharmaceuticals, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 19.7/100 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.