Where does Central Iron AND Steel Research Institute rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Central Iron AND Steel Research Institute ranks #14,522 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 Central Iron AND Steel Research Institute hold?

Central Iron AND Steel Research Institute holds 20 US utility patents granted 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 (top 31% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #1,340 of 4,985 assignees active in that subclass. Grants appear in 28 CPC subclasses total.

Is Central Iron AND Steel Research Institute's patent grant rate increasing or decreasing?

Central Iron AND Steel Research Institute's recent grant velocity is +71% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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 an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Central Iron AND Steel Research Institute

Q: 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.

USPTO PatentsView assignee record - 20 granted patents across 28 technology areas, recorded in grant years 2015–2025. 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: Y02P (Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Central ranks #14,522 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 28 technology areas.

#14,522
of 49,997 US assignees by volume: Top 31%
by Innovation Score (42.3/100): 8.9
avg claims per patent: +71%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14522 · Foreign Corporation #14,522 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 20 grants
MID-PACK #14,522/49,997
PHOTO-FINISH Calcimedica
CPC-FOCUS Y02P · 28 areas
INNOV-PAR 42.3/100
CLAIMS-PAR 8.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +71% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Calcimedica, 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 Central’s 42.3 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 10.5 pts (25%) Velocity 7.8 pts (18%) Breadth 18.7 pts (44%) Claim depth 5.3 pts (13%)

Qualcomm Incorporated · highest

85
Central Iron AND… · this assignee

42
3D Lighting… · lowest

7

What this shows Central's Innovation Score is 42.3/100 (top 31% 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 Central?

Each dot is one of Central’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). Central’s own 8.9 claims/patent is at or below the 14.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Central's grants concentrate

Central Iron AND Steel Research Institute is a focused PatentsView assignee: 28 CPC subclasses with 25% of grants classified under Y02P (Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2019. By volume, Central sits between Calcimedica, Inc. and Chudy Group, LLC.

Central's three-year grant acceleration

Central Iron AND Steel Research Institute shows 7 grants in 2022–2024 against only 6 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

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, grant velocity, technology breadth, and claim depth (0–100)

42 Top 31% higher than 69% 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 · 2015–2025

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%
2025partial year	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

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

Central Iron AND Steel Research Institute's patent record in context - here's where to go next.

Central Iron AND Steel Research Institute's lead technology class is Y02P (Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods), 25% of its portfolio - see every assignee active in that class. Explore Y02P
Ranked #14,522 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Central Iron AND Steel Research Institute against Calcimedica, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 42.3/100 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.