USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Baoshan IRON & Steel Co., Ltd.

USPTO PatentsView assignee record - 193 granted patents across 78 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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).

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

Explore the portfolio See the ranking

193

Total patents granted

CPC technology areas

10.4

Avg claims per patent

+97%

5-year filing velocity

The verdict

Baoshan holds 193 US patents across 78 technology areas, rank #2,053 of 50,000 tracked assignees.

#2,053
of 50,000 US assignees by volume: Top 5%
by Innovation Score (57.0/100): 10.4
avg claims per patent: +97%
filing velocity, last 5 yrs

Portfolio overview

Baoshan IRON & Steel Co., Ltd. has been granted 193 US utility patents between 2015 and 2025, placing Baoshan IRON & Steel Co., Ltd. at rank #2,053 across all assignees tracked by PlainPatent. This portfolio spans 78 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.4 claims per patent with primary concentration in 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). As a Foreign Corporation, Baoshan IRON & Steel Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Baoshan sits between Tongji University (194 patents, rank #2,049) and Solventum Intellectual Properties Company (193 patents, rank #2,057) - the closest US assignees by grant volume. The composite Innovation Score of 57.0/100 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 128 grants, compared with 65 in the 2015–2019 window, a +97% 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. Baoshan IRON & Steel Co., Ltd.'s 10.4 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 78 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Baoshan IRON & Steel Co., Ltd. against peers pursuing similar technology classes.

Tongji University

194
Tivo

194
Trimble Navigation

194
Afton Chemical

193
Hiwin

193
MCP IP

193
Pivotal Software

193
Solventum Intelle…

193
Baoshan IRON & St… ◀

193

What this shows Baoshan holds 193 patents at rank #2,053, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Baoshan

By rank, the assignees closest to #2,053 in granted patent volume.

Leaders in C21D (Modifying THE Physical Structure OF Ferrous Metals)

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

Baoshan's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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

Baoshan IRON & Steel Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	1.6%
2016	6	3.1%
2017	27	14.0%
2018	13	6.7%
2019	16	8.3%
2020	20	10.4%
2021	26	13.5%
2022	37	19.2%
2023	19	9.8%
2024	15	7.8%
2025	11	5.7%

Which technologies does Baoshan IRON & Steel Co., Ltd. patent most?

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 116

C22C - ALLOYS 108

B21B - ROLLING OF METAL 42

B22D - CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 31

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 24

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 23

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 22

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 21

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 10

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 8

C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS 6

E21B - EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS 6

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 5

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 5

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 5

Top 15 of 78 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#2,053

Across all tracked assignees

Innovation Score

57.0 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 Baoshan IRON & Steel Co., Ltd. hold?

Baoshan IRON & Steel Co., Ltd. holds 193 US granted patents filed between 2015 and 2025, spanning 78 technology areas.

What is Baoshan IRON & Steel Co., Ltd.'s Innovation Score?

Baoshan IRON & Steel Co., Ltd. has an Innovation Score of 57.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Baoshan IRON & Steel Co., Ltd. focus on?

Baoshan IRON & Steel Co., Ltd.'s top technology area is 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) with 116 patents. The company has filed patents in 78 CPC subclasses total.

Is Baoshan IRON & Steel Co., Ltd.'s patent filing rate increasing or decreasing?

Baoshan IRON & Steel Co., Ltd.'s recent filing velocity is +97% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Baoshan IRON & Steel Co., Ltd.'s patents?

Baoshan IRON & Steel Co., Ltd.'s patents average 10.4 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Baoshan IRON & Steel 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

Baoshan's 193 grants land it in the top 5% 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 - Baoshan ranks #2,053 of 50,000. Top 50 holders
Most of this portfolio concentrates in C21D - see who else leads that technology area. C21D 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.