Where does Tata Steel Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tata Steel Limited ranks #8,689 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 Tata Steel Limited hold?

Tata Steel Limited holds 37 US utility patents granted between 2015 and 2025, spanning 40 technology areas.

What is Tata Steel Limited's Innovation Score?

Tata Steel Limited has an Innovation Score of 50.5 out of 100 (top 13% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Tata Steel Limited's patent grant rate increasing or decreasing?

Tata Steel Limited's recent grant velocity is +40% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Tata Steel Limited's patents?

Tata Steel Limited's patents average 13.8 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 Tata Steel Limited 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

Tata Steel Limited

Q: What technology areas does Tata Steel Limited focus on?

Tata Steel Limited's top technology area is 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) with 13 patents. Grants appear in 40 CPC subclasses total.

USPTO PatentsView assignee record - 37 granted patents across 40 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: 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).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Tata ranks #8,689 of 49,997 tracked US assignees by granted-patent volume, with 37 patents across 40 technology areas.

#8,689
of 49,997 US assignees by volume: Top 13%
by Innovation Score (50.5/100): 13.8
avg claims per patent: +40%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8689 · Foreign Corporation #8,689 · 37 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-SMALL 37 grants
UPPER-Q #8,689/49,997
PHOTO-FINISH Telect
CPC-WIDE F27D · 40 areas
INNOV-PAR 50.5/100
CLAIMS-RICH 13.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +40% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Telect, 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.

Qualcomm Incorporated · highest

85
Diehl Aerospace · near

51
Face International… · near

51
Heptagon Micro… · near

51
INV Nylon Chemicals… · near

51
Tata Steel · this assignee

51
3D Lighting… · lowest

7

What this shows Tata's Innovation Score is 50.5/100 (top 13% 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.

Where Tata's grants concentrate

Tata Steel Limited is a focused PatentsView assignee: 40 CPC subclasses with 35.1% of grants classified under 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). Peak complete grant year is 2020 (5 grants) versus a trough of 1 in 2015. By volume, Tata sits between Tokai Kogyo Co., Ltd. and ThermoLife International, LLC.

Tata's three-year grant acceleration

Tata Steel Limited shows 12 grants in 2022–2024 against only 11 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.

Tokai Kogyo

37
Tokyo Rope MFG

37
Tornier SAS

37
Tris Pharma

37
Telect

37
The Steelstone Gr…

37
Thermo Scientific…

37
Thermolife Intern…

37
Tata Steel ◀

37

What this shows Tata holds 37 patents at rank #8,696, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tata

By rank, the assignees closest to #8,696 in granted patent volume.

Leaders in F27D (Details OR Accessories OF Furnaces)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Tata, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (51 here).

INV Nylon Chemicals Americas, LLC 51 Face International Corporaton 51 Diehl Aerospace GmbH 51 Heptagon Micro Optics Pte. Ltd. 51

Tata's Innovation Score vs. every tracked assignee

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

51 Top 13% higher than 87% 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

Tata Steel Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	2.7%
2016	4	10.8%
2017	4	10.8%
2018	4	10.8%
2019	2	5.4%
2020	5	13.5%
2021	4	10.8%
2022	5	13.5%
2023	3	8.1%
2024	4	10.8%
2025partial year	1	2.7%

Which technologies does Tata Steel Limited patent most?

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 13

C21B - Manufacture OF Iron OR Steel 13

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 12

C21C - Processing OF Pig-iron, e.g. Refining, Manufacture OF Wrought-iron OR STEEL; Treatment IN Molten State OF Ferrous Alloys 10

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 9

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 8

C22C - Alloys 7

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

C10L - Fuels NOT Otherwise Provided FOR; Natural GAS; Synthetic Natural GAS Obtained BY Processes NOT Covered BY Subclasses C10g OR C10K; Liquified Petroleum GAS; USE OF Additives TO Fuels OR FIRES; Fire-lighters 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 3

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 3

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 3

C10B - Destructive Distillation OF Carbonaceous Materials FOR Production OF GAS, Coke, TAR, OR Similar Materials 3

B21B - Rolling OF Metal 3

Top 15 of 40 technology areas

Where it ranks

Overall rank by patents

#8,689

of 49,997 tracked assignees

Innovation Score

50.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Tata Steel Limited's patent record in context - here's where to go next.

Tata Steel Limited's lead technology class is 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), 35.1% of its portfolio - see every assignee active in that class. Explore F27D
Ranked #8,689 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tata Steel Limited against Tokai Kogyo Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 50.5/100 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.