Where does Mitsui Engineering & Shipbuilding Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Mitsui Engineering & Shipbuilding Co., Ltd. ranks #8,873 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 Mitsui Engineering & Shipbuilding Co., Ltd. hold?

Mitsui Engineering & Shipbuilding Co., Ltd. holds 36 US utility patents granted between 2015 and 2019, spanning 47 technology areas.

What is Mitsui Engineering & Shipbuilding Co., Ltd.'s Innovation Score?

Mitsui Engineering & Shipbuilding Co., Ltd. has an Innovation Score of 41.5 out of 100 (top 33% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mitsui Engineering & Shipbuilding Co., Ltd. focus on?

Mitsui Engineering & Shipbuilding Co., Ltd.'s top technology area is B66C (CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles) with 7 patents, ranking #58 of 428 assignees active in that subclass. Grants appear in 47 CPC subclasses total.

Is Mitsui Engineering & Shipbuilding Co., Ltd.'s patent grant rate increasing or decreasing?

Mitsui Engineering & Shipbuilding 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 Mitsui Engineering & Shipbuilding Co., Ltd.'s patents?

Mitsui Engineering & Shipbuilding Co., Ltd.'s patents average 8.1 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 Mitsui Engineering & Shipbuilding 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

Mitsui Engineering & Shipbuilding Co., Ltd.

USPTO PatentsView assignee record - 36 granted patents across 47 technology areas, recorded in grant years 2015–2019. 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: B66C (CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Mitsui ranks #8,873 of 49,997 tracked US assignees by granted-patent volume, with 36 patents across 47 technology areas.

#8,873
of 49,997 US assignees by volume: Top 33%
by Innovation Score (41.5/100): 8.1
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8873 · Foreign Corporation #8,873 · 36 grants

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

GRANTS-SMALL 36 grants
UPPER-Q #8,873/49,997
PHOTO-FINISH Matsuura Machinery
CPC-WIDE B66C · 47 areas
INNOV-PAR 41.5/100
CLAIMS-PAR 8.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Matsuura Machinery Corporation (±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 Mitsui’s 41.5 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 12.5 pts (30%) Velocity 0.0 pts (0%) Breadth 24.2 pts (58%) Claim depth 4.8 pts (12%)

Qualcomm Incorporated · highest

85
Asahi Kasei Fibers · near

42
BAE Systems Land &… · near

42
Evertz Microsystems · near

42
Mitsui Engineering… · this assignee

42
Relativity ODA · near

42
3D Lighting… · lowest

7

What this shows Mitsui's Innovation Score is 41.5/100 (top 33% 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 Mitsui?

Each dot is one of Mitsui’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). Mitsui’s own 8.1 claims/patent is at or below the 11.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Mitsui's grants concentrate

Mitsui Engineering & Shipbuilding Co., Ltd. is a focused PatentsView assignee: 47 CPC subclasses with 19.4% of grants classified under B66C (CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles). Peak complete grant year is 2015 (11 grants) versus a trough of 1 in 2019. By volume, Mitsui sits between Matsuura Machinery Corporation and Nexter Systems.

Matsuura Machinery

36
May Mobility

36
Membrane Technolo…

36
Metso Outotec Fin…

36
Mortarless

36
Multimatic

36
Nagaki Seiki

36
Nexter Systems

36
Mitsui Engineerin… ◀

36

What this shows Mitsui holds 36 patents at rank #8,876, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsui

By rank, the assignees closest to #8,876 in granted patent volume.

Leaders in B66C (Cranes)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Mitsui, neither rank-band nor same-CPC leaders (those blocks stay above). In B66C (Cranes), Mitsui ranks #58 of 428 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (42 here).

Relativity ODA LLC 42 Asahi Kasei Fibers Corporation 42 BAE Systems Land & Armaments L.P. 42 Evertz Microsystems Ltd. 42

Mitsui's Innovation Score vs. every tracked assignee

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

42 Top 33% higher than 67% 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 · 2015–2019

Grants by year

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

View data table

Mitsui Engineering & Shipbuilding Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	11	30.6%
2016	9	25.0%
2017	9	25.0%
2018	6	16.7%
2019	1	2.8%

Which technologies does Mitsui Engineering & Shipbuilding Co., Ltd. patent most?

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 7

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 6

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 5

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 4

Y02T - Climate Change Mitigation Technologies Related TO Transportation 4

H01L - Semiconductor Devices NOT Covered BY Class H10 3

C10L - Fuels NOT Otherwise Provided FOR; Natural GAS; Synthetic Natural GAS Obtained BY Processes NOT Covered BY Subclasses C10g OR C10K; Liquified Petroleum GAS; USE OF Additives TO Fuels OR FIRES; Fire-lighters 3

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

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 3

F03B - Machines OR Engines FOR Liquids 3

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 3

C12P - Fermentation OR Enzyme-using Processes TO Synthesise A Desired Chemical Compound OR Composition OR TO Separate Optical Isomers From A Racemic Mixture 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

F05B - Indexing Scheme Relating TO Wind, Spring, Weight, Inertia OR Like Motors, TO Machines OR Engines FOR Liquids Covered BY Subclasses F03b, F03d AND F03g 2

Top 15 of 47 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

Mitsui Engineering & Shipbuilding Co., Ltd.'s patent record in context - here's where to go next.

Mitsui Engineering & Shipbuilding Co., Ltd.'s lead technology class is B66C (CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles), 19.4% of its portfolio - see every assignee active in that class. Explore B66C
Ranked #8,873 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mitsui Engineering & Shipbuilding Co., Ltd. against Matsuura Machinery Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.5/100 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.