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

According to USPTO PatentsView (2015–2025 granted utility patents), Hankuk Carbon Co., Ltd. ranks #40,627 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 Hankuk Carbon Co., Ltd. hold?

Hankuk Carbon Co., Ltd. holds 6 US utility patents granted between 2018 and 2023, spanning 13 technology areas.

What is Hankuk Carbon Co., Ltd.'s Innovation Score?

Hankuk Carbon Co., Ltd. has an Innovation Score of 35.4 out of 100 (top 49% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hankuk Carbon Co., Ltd. focus on?

Hankuk Carbon Co., Ltd.'s top technology area is B64C (AEROPLANES; Helicopters) with 3 patents, ranking #286 of 592 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

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

Hankuk Carbon Co., Ltd.'s recent grant velocity is -80% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

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

Hankuk Carbon Co., Ltd.'s patents average 15.5 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 Hankuk Carbon 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

Hankuk Carbon Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 13 technology areas, recorded in grant years 2018–2023. 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: B64C (AEROPLANES; Helicopters).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hankuk ranks #40,627 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 13 technology areas.

#40,627
of 49,997 US assignees by volume: Top 49%
by Innovation Score (35.4/100): 15.5
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R40627 · Foreign Corporation #40,627 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #40,627/49,997
PHOTO-FINISH Handeholder Products
CPC-FOCUS B64C · 13 areas
INNOV-THIN 35.4/100
CLAIMS-RICH 15.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Handeholder Products, 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.

How Hankuk’s 35.4 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 6.7 pts (19%) Velocity 6.7 pts (19%) Breadth 12.7 pts (36%) Claim depth 9.3 pts (26%)

Qualcomm Incorporated · highest

85
Hankuk Carbon · this assignee

35
3D Lighting… · lowest

7

What this shows Hankuk's Innovation Score is 35.4/100 (top 49% 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 Hankuk?

Each dot is one of Hankuk’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). Hankuk’s own 15.5 claims/patent is ABOVE the 13.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Hankuk's grants concentrate

Hankuk Carbon Co., Ltd. is a focused PatentsView assignee: 13 CPC subclasses with 50% of grants classified under B64C (AEROPLANES; Helicopters). Peak complete grant year is 2018 (5 grants) versus a trough of 1 in 2023. By volume, Hankuk sits between Handeholder Products, Inc. and Harper Industries, Inc..

Hankuk's three-year grant acceleration

Hankuk Carbon Co., Ltd. shows 1 grants in 2022–2024 against only 0 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.

Handeholder Produ…

6
Handelskwekerijub…

6
Hangzhou Alicloud…

6
Hangzhou Baiyu Te…

6
Hanwang Technology

6
Harbor Cottage

6
Harbor Medtech

6
Harper Industries

6
Hankuk Carbon ◀

6

What this shows Hankuk holds 6 patents at rank #40,707, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hankuk

By rank, the assignees closest to #40,707 in granted patent volume.

Leaders in B64C (Aeroplanes)

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

Hankuk's Innovation Score vs. every tracked assignee

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

35 Top 49% higher than 51% 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 · 2018–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Hankuk Carbon Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	5	83.3%
2023	1	16.7%

Which technologies does Hankuk Carbon Co., Ltd. patent most?

B64C - AEROPLANES; Helicopters 3

B64D - Equipment FOR Fitting IN OR TO AIRCRAFT; Flight SUITS; PARACHUTES; Arrangement OR Mounting OF Power Plants OR Propulsion Transmissions IN Aircraft 3

Y02T - Climate Change Mitigation Technologies Related TO Transportation 3

B64U - Unmanned Aerial Vehicles [UAV]; Equipment Therefor 3

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

D03D - Woven FABRICS; Methods OF WEAVING; Looms 1

D10B - Indexing Scheme Associated With Sublasses OF Section D, Relating TO Textiles 1

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

C08L - Compositions OF Macromolecular Compounds 1

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 1

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 1

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 1

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

Top 13 of 13 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

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

Hankuk Carbon Co., Ltd.'s lead technology class is B64C (AEROPLANES; Helicopters), 50% of its portfolio - see every assignee active in that class. Explore B64C
Ranked #40,627 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hankuk Carbon Co., Ltd. against Handeholder Products, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.4/100 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.