USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Central IRON AND Steel Research Institute

USPTO PatentsView assignee record - 20 granted patents across 28 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: Y02P (CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

8.9

Avg claims per patent

+86%

5-year filing velocity

The verdict

Central holds 20 US patents across 28 technology areas, rank #14,513 of 50,000 tracked assignees.

#14,513
of 50,000 US assignees by volume: Top 31%
by Innovation Score (42.3/100): 8.9
avg claims per patent: +86%
filing velocity, last 5 yrs

Portfolio overview

Central IRON AND Steel Research Institute has been granted 20 US utility patents between 2015 and 2025, placing Central IRON AND Steel Research Institute at rank #14,513 across all assignees tracked by PlainPatent. This portfolio spans 28 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.9 claims per patent with primary concentration in Y02P (CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS). As a Foreign Corporation, Central IRON AND Steel Research Institute is one of the more focused assignees in the PatentsView dataset. By volume, Central sits between Calcimedica, Inc. (20 patents, rank #14,509) and Chudy Group, Llc (20 patents, rank #14,517) - the closest US assignees by grant volume. The composite Innovation Score of 42.3/100 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 13 grants, compared with 7 in the 2015–2019 window, a +86% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Central IRON AND Steel Research Institute's 8.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 28 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Central IRON AND Steel Research Institute against peers pursuing similar technology classes.

Calcimedica

20
California Innova…

20
Capsa Solutions

20
CCL Secure Pty

20
Central Research…

20
Changzhou JWEI In…

20
China Technology…

20
Chudy Group

20
Central IRON AND… ◀

20

What this shows Central holds 20 patents at rank #14,513, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Central

By rank, the assignees closest to #14,513 in granted patent volume.

Leaders in Y02P (Climate Change Mitigation Technologies IN THE Production…)

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

Central's Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% 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

Central IRON AND Steel Research Institute patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	10.0%
2017	2	10.0%
2018	2	10.0%
2019	1	5.0%
2020	1	5.0%
2021	4	20.0%
2022	1	5.0%
2023	1	5.0%
2024	5	25.0%
2025	1	5.0%

Which technologies does Central IRON AND Steel Research Institute patent most?

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 5

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 4

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 4

C22C - ALLOYS 4

B22D - CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 3

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 3

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 2

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 2

B21C - MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL 2

C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS 2

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 2

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 2

C21B - MANUFACTURE OF IRON OR STEEL 2

B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING 1

B21D - WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL 1

Top 15 of 28 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#14,513

Across all tracked assignees

Innovation Score

42.3 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 Central IRON AND Steel Research Institute hold?

Central IRON AND Steel Research Institute holds 20 US granted patents filed between 2015 and 2025, spanning 28 technology areas.

What is Central IRON AND Steel Research Institute's Innovation Score?

Central IRON AND Steel Research Institute has an Innovation Score of 42.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Central IRON AND Steel Research Institute focus on?

Central IRON AND Steel Research Institute's top technology area is Y02P (CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS) with 5 patents. The company has filed patents in 28 CPC subclasses total.

Is Central IRON AND Steel Research Institute's patent filing rate increasing or decreasing?

Central IRON AND Steel Research Institute's recent filing velocity is +86% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Central IRON AND Steel Research Institute's patents?

Central IRON AND Steel Research Institute's patents average 8.9 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Central IRON AND Steel Research Institute 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

Central's 20 grants land it in the top 31% 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 - Central ranks #14,513 of 50,000. Top 50 holders
Most of this portfolio concentrates in Y02P - see who else leads that technology area. Y02P 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.