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

According to USPTO PatentsView (2015–2025 granted utility patents), Asahi Shipping Co., Ltd. ranks #44,855 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 Asahi Shipping Co., Ltd. hold?

Asahi Shipping Co., Ltd. holds 5 US utility patents granted between 2017 and 2019, spanning 11 technology areas.

What is Asahi Shipping Co., Ltd.'s Innovation Score?

Asahi Shipping Co., Ltd. has an Innovation Score of 25.1 out of 100 (16th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Asahi Shipping Co., Ltd.'s recent grant velocity is -100% 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 Asahi Shipping Co., Ltd.'s patents?

Asahi Shipping Co., Ltd.'s patents average 12.0 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 Asahi Shipping 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

Asahi Shipping Co., Ltd.

Q: What technology areas does Asahi Shipping Co., Ltd. focus on?

Asahi Shipping Co., Ltd.'s top technology area is F01K (Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles) with 5 patents, ranking #49 of 225 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 11 technology areas, recorded in grant years 2017–2019. 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: F01K (Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Asahi ranks #44,855 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 11 technology areas.

#44,855
of 49,997 US assignees by volume: 16th percentile
by Innovation Score (25.1/100): 12.0
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R44855 · Foreign Corporation #44,855 · 5 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
LOWER-Q #44,855/49,997
PHOTO-FINISH Arysta Lifescience…
CPC-FOCUS F01K · 11 areas
INNOV-THIN 25.1/100
CLAIMS-RICH 12.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Arysta Lifescience Benelux Sprl (±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 Asahi’s 25.1 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 6.2 pts (25%) Velocity 0.0 pts (0%) Breadth 11.7 pts (47%) Claim depth 7.2 pts (29%)

Qualcomm Incorporated · highest

85
Asahi Shipping · this assignee

25
3D Lighting… · lowest

7

What this shows Asahi's Innovation Score is 25.1/100 (16th 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 Asahi?

Each dot is one of Asahi’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). Asahi’s own 12.0 claims/patent is ABOVE the 11.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Asahi's grants concentrate

Asahi Shipping Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 100% of grants classified under F01K (Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2017. By volume, Asahi sits between Arysta Lifescience Benelux Sprl and ASCon Systems Holding GmbH.

Arysta Lifescienc…

5
Arysta Lifescienc…

5
Asahi Fiber Glass

5
Asahi FR R&D

5
Asarina Pharma AB

5
Ascension Texas

5
Ascom (Sweden) AB

5
Ascon Systems Hol…

5
Asahi Shipping ◀

5

What this shows Asahi holds 5 patents at rank #44,624, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Asahi

By rank, the assignees closest to #44,624 in granted patent volume.

Leaders in F01K (Steam Engine Plants)

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

Asahi's Innovation Score vs. every tracked assignee

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

25 16th percentile higher than 16% 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 · 2017–2019

Grants by year

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

View data table

Asahi Shipping Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	20.0%
2018	2	40.0%
2019	2	40.0%

Which technologies does Asahi Shipping Co., Ltd. patent most?

F01K - Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles 5

F02G - HOT GAS OR Combustion-product Positive-displacement Engine Plants ; USE OF Waste Heat OF Combustion ENGINES; NOT Otherwise Provided FOR 3

Y02T - Climate Change Mitigation Technologies Related TO Transportation 3

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 2

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 1

F01P - Cooling OF Machines OR Engines IN GENERAL; Cooling OF Internal-combustion Engines 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

B63J - Auxiliaries ON Vessels 1

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 1

F22D - Preheating, OR Accumulating Preheated, Feed-water FOR Steam GENERATION; Feed-water Supply FOR Steam GENERATION; Controlling Water Level FOR Steam GENERATION; Auxiliary Devices FOR Promoting Water Circulation Within Steam Boilers 1

F22B - Methods OF Steam GENERATION; Steam Boilers 1

Top 11 of 11 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

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

Asahi Shipping Co., Ltd.'s lead technology class is F01K (Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles), 100% of its portfolio - see every assignee active in that class. Explore F01K
Ranked #44,855 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Asahi Shipping Co., Ltd. against Arysta Lifescience Benelux Sprl, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 25.1/100 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.