Where does Mitsubishi Hitachi Tool Engineering, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Mitsubishi Hitachi Tool Engineering, Ltd. ranks #8,441 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 Mitsubishi Hitachi Tool Engineering, Ltd. hold?

Mitsubishi Hitachi Tool Engineering, Ltd. holds 38 US utility patents granted between 2016 and 2021, spanning 9 technology areas.

What is Mitsubishi Hitachi Tool Engineering, Ltd.'s Innovation Score?

Mitsubishi Hitachi Tool Engineering, Ltd. has an Innovation Score of 28.7 out of 100 (28th 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 Mitsubishi Hitachi Tool Engineering, Ltd. focus on?

Mitsubishi Hitachi Tool Engineering, Ltd.'s top technology area is B23C (Milling) with 19 patents, ranking #15 of 227 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Mitsubishi Hitachi Tool Engineering, Ltd.'s patent grant rate increasing or decreasing?

Mitsubishi Hitachi Tool Engineering, Ltd.'s recent grant velocity is -59% 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 Mitsubishi Hitachi Tool Engineering, Ltd.'s patents?

Mitsubishi Hitachi Tool Engineering, Ltd.'s patents average 9.1 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 Mitsubishi Hitachi Tool Engineering, 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

Mitsubishi Hitachi Tool Engineering, Ltd.

USPTO PatentsView assignee record - 38 granted patents across 9 technology areas, recorded in grant years 2016–2021. 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: B23C (Milling).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Mitsubishi ranks #8,441 of 49,997 tracked US assignees by granted-patent volume, with 38 patents across 9 technology areas.

#8,441
of 49,997 US assignees by volume: 28th percentile
by Innovation Score (28.7/100): 9.1
avg claims per patent: -59%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8441 · Foreign Corporation #8,441 · 38 grants

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

GRANTS-SMALL 38 grants
UPPER-Q #8,441/49,997
PHOTO-FINISH Lentigen Technology
CPC-NARROW B23C · 9 areas
INNOV-THIN 28.7/100
CLAIMS-PAR 9.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -59% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Lentigen Technology, 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 Mitsubishi’s 28.7 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 12.7 pts (44%) Velocity 0.0 pts (0%) Breadth 10.6 pts (37%) Claim depth 5.4 pts (19%)

Qualcomm Incorporated · highest

85
J-oil Mills · near

29
JOY Global Longview… · near

29
Silver Creek… · near

29
Daca Design · near

29
Mitsubishi Hitachi… · this assignee

29
3D Lighting… · lowest

7

What this shows Mitsubishi's Innovation Score is 28.7/100 (28th 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 Mitsubishi?

Each dot is one of Mitsubishi’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). Mitsubishi’s own 9.1 claims/patent is at or below the 11.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Mitsubishi's grants concentrate

Mitsubishi Hitachi Tool Engineering, Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 50% of grants classified under B23C (Milling). Peak complete grant year is 2019 (13 grants) versus a trough of 2 in 2016. By volume, Mitsubishi sits between Lentigen Technology, Inc. and MacDermid Enthone Inc..

Lentigen Technolo…

38
Louisiana-pacific

38
Medit

38
Miraial

38
Mloptic

38
Momentive Perform…

38
Mpow Technology

38
Macdermid Enthone

38
Mitsubishi Hitach… ◀

38

What this shows Mitsubishi holds 38 patents at rank #8,431, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsubishi

By rank, the assignees closest to #8,431 in granted patent volume.

Leaders in B23C (Milling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Mitsubishi, neither rank-band nor same-CPC leaders (those blocks stay above). In B23C (Milling), Mitsubishi ranks #15 of 227 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (29 here).

Daca Design LLC 29 J-oil Mills, Inc. 29 Silver Creek Pharmaceuticals, Inc. 29 JOY Global Longview Operations LLC 29

Mitsubishi's Innovation Score vs. every tracked assignee

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

29 28th percentile higher than 28% 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 · 2016–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Mitsubishi Hitachi Tool Engineering, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	5.3%
2017	2	5.3%
2018	10	26.3%
2019	13	34.2%
2020	7	18.4%
2021	4	10.5%

Which technologies does Mitsubishi Hitachi Tool Engineering, Ltd. patent most?

B23C - Milling 19

Y10T - Technical Subjects Covered BY Former US Classification 6

B23B - TURNING; Boring 5

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 4

B23Q - Details, Components, OR Accessories FOR Machine Tools, e.g. Arrangements FOR Copying OR Controlling ; Machine Tools IN General Characterised BY THE Construction OF Particular Details OR COMPONENTS; Combinations OR Associations OF Metal-working Machines, NOT Directed TO A Particular Result 1

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

C22C - Alloys 1

B23G - Thread CUTTING; Working OF Screws, Bolt Heads, OR Nuts, IN Conjunction Therewith 1

Top 9 of 9 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

Mitsubishi Hitachi Tool Engineering, Ltd.'s patent record in context - here's where to go next.

Mitsubishi Hitachi Tool Engineering, Ltd.'s lead technology class is B23C (Milling), 50% of its portfolio - see every assignee active in that class. Explore B23C
Ranked #8,441 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mitsubishi Hitachi Tool Engineering, Ltd. against Lentigen Technology, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.7/100 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.