Where does Posco Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Posco Co., Ltd ranks #645 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 Posco Co., Ltd hold?

Posco Co., Ltd holds 691 US utility patents granted between 2015 and 2025, spanning 137 technology areas.

What is Posco Co., Ltd's Innovation Score?

Posco Co., Ltd has an Innovation Score of 63.7 out of 100 (top 2% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Posco Co., Ltd focus on?

Posco Co., Ltd's top technology area is C22C (Alloys) with 464 patents, ranking #3 of 948 assignees active in that subclass. Grants appear in 137 CPC subclasses total.

Is Posco Co., Ltd's patent grant rate increasing or decreasing?

Posco Co., Ltd's recent grant velocity is +108% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Posco Co., Ltd's patents?

Posco Co., Ltd'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.

How is the Posco 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Posco Co., Ltd

USPTO PatentsView assignee record - 691 granted patents across 137 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: C22C (Alloys).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Posco ranks #645 of 49,997 tracked US assignees by granted-patent volume, with 691 patents across 137 technology areas.

#645
of 49,997 US assignees by volume: Top 2%
by Innovation Score (63.7/100): 8.9
avg claims per patent: +108%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R645 · Foreign Corporation #645 · 691 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 691 grants
TOP-DECILE #645/49,997
PHOTO-FINISH Schneider Electric…
CPC-WIDE C22C · 137 areas
INNOV-STRONG 63.7/100
CLAIMS-PAR 8.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +108% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Schneider Electric Industries SAS (±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 Posco’s 63.7 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 22.6 pts (35%) Velocity 10.8 pts (17%) Breadth 25.0 pts (39%) Claim depth 5.4 pts (8%)

Qualcomm Incorporated · highest

85
Eastman Chemical · near

64
Posco · this assignee

64
WHP Workflow Solutions · near

64
Hubbell Incorporated · near

64
Topgolf Callaway… · near

64
3D Lighting… · lowest

7

What this shows Posco's Innovation Score is 63.7/100 (top 2% 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 Posco?

Each dot is one of Posco’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). Posco’s own 8.9 claims/patent is at or below the 18.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Posco's grant cadence moved

Between 2020–2024, Posco Co., Ltd received 402 grants versus 193 in 2015–2019 (+108% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2023 at 100 grants and bottomed in 2015 at 24. Lead class C22C accounts for 67.1% of the portfolio across 137 subclasses. Volume neighbours: CenturyLink Intellectual Property LLC (#641) and Rivian IP Holdings, LLC (#649).

Posco's three-year grant acceleration

From 2019–2021 to 2022–2024, Posco Co., Ltd moved from 170 to 275 grants (1.62x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #368. See the growth leaderboard.

Centurylink Intel…

695
Cerner Innovation

695
Callaway Golf

694
Cameron Internati…

692
Schneider Electri…

691
University of Was…

691
Posco ◀

691
Immatics Biotechn…

690
Rivian IP Holdings

690

What this shows Posco holds 691 patents at rank #645, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Posco

By rank, the assignees closest to #645 in granted patent volume.

Leaders in C22C (Alloys)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Posco, neither rank-band nor same-CPC leaders (those blocks stay above). In C22C (Alloys), Posco ranks #3 of 948 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (64 here).

Eastman Chemical Company 64 WHP Workflow Solutions, Inc. 64 Hubbell Incorporated 64 Topgolf Callaway Brands Corp. 64

Similar claim depth

Nearest assignees by average claims per patent (8.9 here).

Zuiko Corporation 8.9 avg Nidec Copal Corporation 8.9 avg Shanghai Jiao Tong University 8.9 avg AptarGroup, Inc. 8.9 avg

Posco's Innovation Score vs. every tracked assignee

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

64 Top 2% higher than 98% 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

Posco Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	24	3.5%
2016	35	5.1%
2017	40	5.8%
2018	51	7.4%
2019	43	6.2%
2020	54	7.8%
2021	73	10.6%
2022	86	12.4%
2023	100	14.5%
2024	89	12.9%
2025partial year	96	13.9%

Which technologies does Posco Co., Ltd patent most?

C22C - Alloys 464

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 400

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 263

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 164

Y10T - Technical Subjects Covered BY Former US Classification 122

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 59

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 57

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 53

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 45

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 42

B21B - Rolling OF Metal 41

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 33

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 31

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 31

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 29

Top 15 of 137 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

Posco Co., Ltd's patent record in context - here's where to go next.

Posco Co., Ltd's lead technology class is C22C (Alloys), 67.1% of its portfolio - see every assignee active in that class. Explore C22C
Ranked #645 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Posco Co., Ltd against CenturyLink Intellectual Property LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 63.7/100 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.