Where does Poongsan Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Poongsan Corporation ranks #20,255 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 Poongsan Corporation hold?

Poongsan Corporation holds 14 US utility patents granted between 2015 and 2023, spanning 19 technology areas.

What is Poongsan Corporation's Innovation Score?

Poongsan Corporation has an Innovation Score of 37.7 out of 100 (top 43% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Poongsan Corporation focus on?

Poongsan Corporation's top technology area is C22F (Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys) with 8 patents, ranking #41 of 285 assignees active in that subclass. Grants appear in 19 CPC subclasses total.

Is Poongsan Corporation's patent grant rate increasing or decreasing?

Poongsan Corporation's recent grant velocity is +33% 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 Poongsan Corporation's patents?

Poongsan Corporation's patents average 7.6 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 Poongsan Corporation 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

Poongsan Corporation

USPTO PatentsView assignee record - 14 granted patents across 19 technology areas, recorded in grant years 2015–2023. 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: C22F (Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Poongsan ranks #20,255 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 19 technology areas.

#20,255
of 49,997 US assignees by volume: Top 43%
by Innovation Score (37.7/100): 7.6
avg claims per patent: +33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20255 · Foreign Corporation #20,255 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 14 grants
MID-PACK #20,255/49,997
PHOTO-FINISH Plow & Hearth
CPC-FOCUS C22F · 19 areas
INNOV-THIN 37.7/100
CLAIMS-SPARSE 7.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Plow & Hearth, LLC (±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 Poongsan’s 37.7 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 9.4 pts (25%) Velocity 8.3 pts (22%) Breadth 15.4 pts (41%) Claim depth 4.6 pts (12%)

Qualcomm Incorporated · highest

85
Poongsan · this assignee

38
3D Lighting… · lowest

7

What this shows Poongsan's Innovation Score is 37.7/100 (top 43% 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 Poongsan?

Each dot is one of Poongsan’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). Poongsan’s own 7.6 claims/patent is at or below the 17.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Poongsan's grants concentrate

Poongsan Corporation is a focused PatentsView assignee: 19 CPC subclasses with 57.1% of grants classified under C22F (Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys). Peak complete grant year is 2023 (4 grants) versus a trough of 1 in 2015. By volume, Poongsan sits between Plow & Hearth, LLC and Powin Energy Corporation.

Poongsan's three-year grant acceleration

Poongsan Corporation shows 5 grants in 2022–2024 against only 4 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.

Plow & Hearth

14
Pogotec

14
Polycorp

14
Polytechnic Insti…

14
Portero Holdings

14
Potrero Medical

14
Power Systems

14
Powin Energy

14
Poongsan ◀

14

What this shows Poongsan holds 14 patents at rank #20,263, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Poongsan

By rank, the assignees closest to #20,263 in granted patent volume.

Leaders in C22F (Changing THE Physical Structure OF Non-ferrous Metals AND…)

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

Poongsan's Innovation Score vs. every tracked assignee

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

38 Top 43% higher than 57% 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 · 2015–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Poongsan Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	7.1%
2016	1	7.1%
2017	3	21.4%
2019	1	7.1%
2021	3	21.4%
2022	1	7.1%
2023	4	28.6%

Which technologies does Poongsan Corporation patent most?

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 8

C22C - Alloys 8

B21B - Rolling OF Metal 5

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 3

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 3

F42B - Explosive Charges, e.g. FOR Blasting, Fireworks, Ammunition 2

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 1

H04N - Pictorial Communication, e.g. Television 1

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 1

C25F - Processes FOR THE Electrolytic Removal OF Materials From OBJECTS; Apparatus Therefor 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

Y02C - Capture, Storage, Sequestration OR Disposal OF Greenhouse Gases [GHG] 1

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Top 15 of 19 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

Poongsan Corporation's patent record in context - here's where to go next.

Poongsan Corporation's lead technology class is C22F (Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys), 57.1% of its portfolio - see every assignee active in that class. Explore C22F
Ranked #20,255 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Poongsan Corporation against Plow & Hearth, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 37.7/100 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.