USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Mitsubishi Diamond Industrial Co., Ltd.

USPTO PatentsView assignee record - 10 granted patents across 11 technology areas, active 2015–2021. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: Y10T (TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

11.7

Avg claims per patent

-89%

5-year filing velocity

The verdict

Mitsubishi holds 10 US patents across 11 technology areas, rank #26,824 of 50,000 tracked assignees.

#26,824
of 50,000 US assignees by volume: Top 78%
by Innovation Score (27.0/100): 11.7
avg claims per patent: -89%
filing velocity, last 5 yrs

Portfolio overview

Mitsubishi Diamond Industrial Co., Ltd. has been granted 10 US utility patents between 2015 and 2021, placing Mitsubishi Diamond Industrial Co., Ltd. at rank #26,824 across all assignees tracked by PlainPatent. This portfolio spans 11 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.7 claims per patent with primary concentration in Y10T (TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION). As a Foreign Corporation, Mitsubishi Diamond Industrial Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Mitsubishi sits between Mirama Service Inc. (10 patents, rank #26,820) and MJC, Inc. (10 patents, rank #26,828) - the closest US assignees by grant volume. The composite Innovation Score of 27.0/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 1 grants, compared with 9 in the 2015–2019 window, a -89% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Mitsubishi Diamond Industrial Co., Ltd.'s 11.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 11 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Mitsubishi Diamond Industrial Co., Ltd. against peers pursuing similar technology classes.

Mirama Service

10
Mirle Automation

10
Misaine Trade

10
Mitac Digital Tec…

10
Mitsubishi Heavy…

10
Mitsubishi Hitach…

10
MIW Associates

10
MJC

10
Mitsubishi Diamon… ◀

10

What this shows Mitsubishi holds 10 patents at rank #26,824, 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 #26,824 in granted patent volume.

Leaders in Y10T (Technical Subjects Covered BY Former US Classification)

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

Mitsubishi's Innovation Score vs. every tracked assignee

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

27 Top 78% higher than 22% of 50,000 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

Mitsubishi Diamond Industrial Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	20.0%
2016	2	20.0%
2017	2	20.0%
2018	2	20.0%
2019	1	10.0%
2021	1	10.0%

Which technologies does Mitsubishi Diamond Industrial Co., Ltd. patent most?

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 5

B28D - WORKING STONE OR STONE-LIKE MATERIALS 5

C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES 4

B26D - CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING 3

H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL 3

B24B - MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING ; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS 2

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 1

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 1

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 1

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1

H10F - INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION 1

Top 11 of 11 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#26,824

Across all tracked assignees

Innovation Score

27.0 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Mitsubishi Diamond Industrial Co., Ltd. hold?

Mitsubishi Diamond Industrial Co., Ltd. holds 10 US granted patents filed between 2015 and 2021, spanning 11 technology areas.

What is Mitsubishi Diamond Industrial Co., Ltd.'s Innovation Score?

Mitsubishi Diamond Industrial Co., Ltd. has an Innovation Score of 27.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mitsubishi Diamond Industrial Co., Ltd. focus on?

Mitsubishi Diamond Industrial Co., Ltd.'s top technology area is Y10T (TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION) with 5 patents. The company has filed patents in 11 CPC subclasses total.

Is Mitsubishi Diamond Industrial Co., Ltd.'s patent filing rate increasing or decreasing?

Mitsubishi Diamond Industrial Co., Ltd.'s recent filing velocity is -89% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Mitsubishi Diamond Industrial Co., Ltd.'s patents?

Mitsubishi Diamond Industrial Co., Ltd.'s patents average 11.7 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Mitsubishi Diamond Industrial 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.

How to use this portfolio

Mitsubishi's 10 grants land it in the top 78% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Mitsubishi ranks #26,824 of 50,000. Top 50 holders
Most of this portfolio concentrates in Y10T - see who else leads that technology area. Y10T leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.