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

According to USPTO PatentsView (2015–2025 granted utility patents), Korea Zinc Co., Ltd. ranks #24,667 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 Korea Zinc Co., Ltd. hold?

Korea Zinc Co., Ltd. holds 11 US utility patents granted between 2020 and 2025, spanning 20 technology areas.

What is Korea Zinc Co., Ltd.'s Innovation Score?

Korea Zinc Co., Ltd. has an Innovation Score of 50.4 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%).

What technology areas does Korea Zinc Co., Ltd. focus on?

Korea Zinc Co., Ltd.'s top technology area is C22B (Production AND Refining OF Metals ; Pretreatment OF RAW Materials) with 9 patents, ranking #36 of 335 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

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

Insufficient historical data is available to calculate a velocity trend for Korea Zinc Co., Ltd..

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

Korea Zinc Co., Ltd.'s patents average 15.6 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 Korea Zinc 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

Korea Zinc Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 20 technology areas, recorded in grant years 2020–2025. 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: C22B (Production AND Refining OF Metals ; Pretreatment OF RAW Materials).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Korea ranks #24,667 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 20 technology areas.

#24,667
of 49,997 US assignees by volume: Top 13%
by Innovation Score (50.4/100): 15.6
avg claims per patent

USPTO PatentsView assignee plate

Corpus R24667 · Foreign Corporation #24,667 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 11 grants
MID-PACK #24,667/49,997
PHOTO-FINISH Koni B V
CPC-FOCUS C22B · 20 areas
INNOV-PAR 50.4/100
CLAIMS-RICH 15.6 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Koni B.V. (±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 Korea’s 50.4 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 8.6 pts (17%) Velocity 16.7 pts (33%) Breadth 15.8 pts (31%) Claim depth 9.3 pts (18%)

Qualcomm Incorporated · highest

85
Korea Zinc · this assignee

50
3D Lighting… · lowest

7

What this shows Korea's Innovation Score is 50.4/100 (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.

Does more volume mean deeper claims for Korea?

Each dot is one of Korea’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). Korea’s own 15.6 claims/patent is ABOVE the 10.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Korea's grants concentrate

Korea Zinc Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 81.8% of grants classified under C22B (Production AND Refining OF Metals ; Pretreatment OF RAW Materials). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2020. By volume, Korea sits between Koni B.V. and Kriwan Industrie-elektronik GMBH.

Korea's three-year grant acceleration

Korea Zinc Co., Ltd. shows 5 grants in 2022–2024 against only 2 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.

Koni B V

11
Kore Essentials

11
Korea Fuel-tech

11
Korea Resources

11
Korean Broadcasti…

11
Koyo Machine Indu…

11
KP Medcure

11
Kriwan Industrie-…

11
Korea Zinc ◀

11

What this shows Korea holds 11 patents at rank #24,640, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Korea

By rank, the assignees closest to #24,640 in granted patent volume.

Leaders in C22B (Production AND Refining OF Metals)

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

Korea's Innovation Score vs. every tracked assignee

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

50 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 · 2020–2025

Grants by year

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

View data table

Korea Zinc Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	1	9.1%
2021	1	9.1%
2024	5	45.5%
2025partial year	4	36.4%

Which technologies does Korea Zinc Co., Ltd. patent most?

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 9

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 9

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 8

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 7

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 3

B09B - Disposal OF Solid Waste NOT Otherwise Provided FOR 3

B01D - Separation 2

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 2

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 1

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

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

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 1

C25C - Processes FOR THE Electrolytic Production, Recovery OR Refining OF METALS; Apparatus Therefor 1

C01D - Compounds OF Alkali Metals, i.e. Lithium, Sodium, Potassium, Rubidium, Caesium, OR Francium 1

B03B - Separating Solid Materials Using Liquids OR Using Pneumatic Tables OR Jigs 1

Top 15 of 20 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

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

Korea Zinc Co., Ltd.'s lead technology class is C22B (Production AND Refining OF Metals ; Pretreatment OF RAW Materials), 81.8% of its portfolio - see every assignee active in that class. Explore C22B
Ranked #24,667 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Korea Zinc Co., Ltd. against Koni B.V., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 50.4/100 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.