Where does Zama Japan Kabushiki Kaisha rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zama Japan Kabushiki Kaisha ranks #9,170 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 Zama Japan Kabushiki Kaisha hold?

Zama Japan Kabushiki Kaisha holds 35 US utility patents granted between 2015 and 2023, spanning 7 technology areas.

What is Zama Japan Kabushiki Kaisha's Innovation Score?

Zama Japan Kabushiki Kaisha has an Innovation Score of 29.7 out of 100 (32nd 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 Zama Japan Kabushiki Kaisha focus on?

Zama Japan Kabushiki Kaisha's top technology area is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof) with 29 patents, ranking #58 of 574 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Zama Japan Kabushiki Kaisha's patent grant rate increasing or decreasing?

Zama Japan Kabushiki Kaisha's recent grant velocity is -70% 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 Zama Japan Kabushiki Kaisha's patents?

Zama Japan Kabushiki Kaisha's patents average 10.5 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 Zama Japan Kabushiki Kaisha 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

Zama Japan Kabushiki Kaisha

USPTO PatentsView assignee record - 35 granted patents across 7 technology areas, recorded in grant years 2015–2023. 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: F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zama ranks #9,170 of 49,997 tracked US assignees by granted-patent volume, with 35 patents across 7 technology areas.

#9,170
of 49,997 US assignees by volume: 32nd percentile
by Innovation Score (29.7/100): 10.5
avg claims per patent: -70%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9170 · Foreign Corporation #9,170 · 35 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 35 grants
UPPER-Q #9,170/49,997
PHOTO-FINISH enVerid Systems
CPC-NARROW F02M · 7 areas
INNOV-THIN 29.7/100
CLAIMS-PAR 10.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -70% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: enVerid Systems, 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 Zama’s 29.7 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 12.4 pts (42%) Velocity 1.7 pts (6%) Breadth 9.4 pts (32%) Claim depth 6.3 pts (21%)

Qualcomm Incorporated · highest

85
Betterguards… · near

30
Marina Biotech · near

30
CB Innovations · near

30
Zama Japan · this assignee

30
CrunchLabs · near

30
3D Lighting… · lowest

7

What this shows Zama's Innovation Score is 29.7/100 (32nd 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 Zama?

Each dot is one of Zama’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). Zama’s own 10.5 claims/patent is at or below the 16.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Zama's grants concentrate

Zama Japan Kabushiki Kaisha is a focused PatentsView assignee: 7 CPC subclasses with 82.9% of grants classified under F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof). Peak complete grant year is 2019 (7 grants) versus a trough of 1 in 2021. By volume, Zama sits between WWW.TRUSTSCIENCE.COM Inc. and xAd, Inc..

Zama's three-year grant acceleration

Zama Japan Kabushiki Kaisha shows 3 grants in 2022–2024 against only 12 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.

WWW Trustscience…

35
Wenger Manufactur…

35
Whitestar Communi…

35
Wipotec

35
Zenithen USA

35
enverid Systems

35
fischerwerke & KG

35
xad

35
Zama Japan ◀

35

What this shows Zama holds 35 patents at rank #9,167, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zama

By rank, the assignees closest to #9,167 in granted patent volume.

Leaders in F02M (Supplying Combustion Engines IN General With Combustible…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Zama, neither rank-band nor same-CPC leaders (those blocks stay above). In F02M (Supplying Combustion Engines IN General With Combustible…), Zama ranks #58 of 574 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (30 here).

CB Innovations, LLC 30 Marina Biotech, Inc. 30 Betterguards Technology GmbH 30 CrunchLabs LLC 30

Zama's Innovation Score vs. every tracked assignee

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

30 32nd percentile higher than 32% 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 · 2015–2023

Grants by year

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

View data table

Zama Japan Kabushiki Kaisha patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	14.3%
2016	5	14.3%
2017	5	14.3%
2018	5	14.3%
2019	7	20.0%
2020	4	11.4%
2021	1	2.9%
2022	2	5.7%
2023	1	2.9%

Which technologies does Zama Japan Kabushiki Kaisha patent most?

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 29

F02D - Controlling Combustion Engines 7

Y02T - Climate Change Mitigation Technologies Related TO Transportation 5

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 4

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 4

F02P - Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines 2

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 1

Top 7 of 7 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

Zama Japan Kabushiki Kaisha's patent record in context - here's where to go next.

Zama Japan Kabushiki Kaisha's lead technology class is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof), 82.9% of its portfolio - see every assignee active in that class. Explore F02M
Ranked #9,170 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zama Japan Kabushiki Kaisha against WWW.TRUSTSCIENCE.COM Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.7/100 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.