USPTO 2015–2025 USPTO PatentsView US Corporation

Midrex Technologies, Inc.

USPTO PatentsView assignee record - 32 granted patents across 23 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C21B (MANUFACTURE OF IRON OR STEEL).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

14.8

Avg claims per patent

-12%

5-year filing velocity

The verdict

Midrex holds 32 US patents across 23 technology areas, rank #9,824 of 50,000 tracked assignees.

#9,824
of 50,000 US assignees by volume: Top 19%
by Innovation Score (47.4/100): 14.8
avg claims per patent: -12%
filing velocity, last 5 yrs

Portfolio overview

Midrex Technologies, Inc. has been granted 32 US utility patents between 2015 and 2025, placing Midrex Technologies, Inc. at rank #9,824 across all assignees tracked by PlainPatent. This portfolio spans 23 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.8 claims per patent with primary concentration in C21B (MANUFACTURE OF IRON OR STEEL). As a US Corporation, Midrex Technologies, Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Midrex sits between Maricap Oy (32 patents, rank #9,820) and Nihon Medi-physics Co., Ltd. (32 patents, rank #9,828) - the closest US assignees by grant volume. The composite Innovation Score of 47.4/100 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 15 grants, compared with 17 in the 2015–2019 window, a -12% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US 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. Midrex Technologies, Inc.'s 14.8 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 23 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Midrex Technologies, Inc. against peers pursuing similar technology classes.

Maricap Oy

32
Mati Therapeutics

32
Mccue

32
Meta

32
Minipumps

32
Nagano Keiki

32
NEX Team

32
Nihon Medi-physics

32
Midrex ◀

32

What this shows Midrex holds 32 patents at rank #9,824, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Midrex

By rank, the assignees closest to #9,824 in granted patent volume.

Leaders in C21B (Manufacture OF IRON OR Steel)

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

Midrex's Innovation Score vs. every tracked assignee

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

47 Top 19% higher than 81% 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 · 2015–2025

Grants by year

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

View data table

Midrex Technologies, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	15.6%
2017	3	9.4%
2018	6	18.8%
2019	3	9.4%
2020	1	3.1%
2021	3	9.4%
2022	1	3.1%
2023	3	9.4%
2024	6	18.8%
2025	1	3.1%

Which technologies does Midrex Technologies, Inc. patent most?

C21B - MANUFACTURE OF IRON OR STEEL 30

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 28

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 14

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 8

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 8

C22B - PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS 5

C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS 5

C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE 2

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2

C23F - NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D 2

C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 2

C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES ; CARBURETTING AIR OR OTHER GASES 1

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

F23D - BURNERS 1

C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR 1

Top 15 of 23 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#9,824

Across all tracked assignees

Innovation Score

47.4 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 Midrex Technologies, Inc. hold?

Midrex Technologies, Inc. holds 32 US granted patents filed between 2015 and 2025, spanning 23 technology areas.

What is Midrex Technologies, Inc.'s Innovation Score?

Midrex Technologies, Inc. has an Innovation Score of 47.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Midrex Technologies, Inc. focus on?

Midrex Technologies, Inc.'s top technology area is C21B (MANUFACTURE OF IRON OR STEEL) with 30 patents. The company has filed patents in 23 CPC subclasses total.

Is Midrex Technologies, Inc.'s patent filing rate increasing or decreasing?

Midrex Technologies, Inc.'s recent filing velocity is -12% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Midrex Technologies, Inc.'s patents?

Midrex Technologies, Inc.'s patents average 14.8 claims each. This falls within the standard range, providing solid legal coverage.

How is the Midrex Technologies, Inc. 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

Midrex's 32 grants land it in the top 19% 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 - Midrex ranks #9,824 of 50,000. Top 50 holders
Most of this portfolio concentrates in C21B - see who else leads that technology area. C21B 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 · 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.