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

According to USPTO PatentsView (2015–2025 granted utility patents), SK Lubricants Co., Ltd. ranks #13,690 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 SK Lubricants Co., Ltd. hold?

SK Lubricants Co., Ltd. holds 22 US utility patents granted between 2017 and 2022, spanning 17 technology areas.

What is SK Lubricants Co., Ltd.'s Innovation Score?

SK Lubricants Co., Ltd. has an Innovation Score of 38.2 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

SK Lubricants Co., Ltd.'s recent grant velocity is -43% 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 SK Lubricants Co., Ltd.'s patents?

SK Lubricants Co., Ltd.'s patents average 10.2 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 SK Lubricants 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

SK Lubricants Co., Ltd.

Q: What technology areas does SK Lubricants Co., Ltd. focus on?

SK Lubricants Co., Ltd.'s top technology area is C10M (Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition) with 14 patents, ranking #35 of 300 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

USPTO PatentsView assignee record - 22 granted patents across 17 technology areas, recorded in grant years 2017–2022. 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: C10M (Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, SK ranks #13,690 of 49,997 tracked US assignees by granted-patent volume, with 22 patents across 17 technology areas.

#13,690
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.2/100): 10.2
avg claims per patent: -43%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13690 · Foreign Corporation #13,690 · 22 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 22 grants
MID-PACK #13,690/49,997
PHOTO-FINISH Shaw & Sons
CPC-FOCUS C10M · 17 areas
INNOV-THIN 38.2/100
CLAIMS-PAR 10.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -43% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shaw & Sons, 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 SK’s 38.2 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 10.8 pts (28%) Velocity 6.7 pts (18%) Breadth 14.6 pts (38%) Claim depth 6.1 pts (16%)

Qualcomm Incorporated · highest

85
SK Lubricants · this assignee

38
3D Lighting… · lowest

7

What this shows SK's Innovation Score is 38.2/100 (top 41% 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 SK?

Each dot is one of SK’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). SK’s own 10.2 claims/patent is ABOVE the 9.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where SK's grants concentrate

SK Lubricants Co., Ltd. is a focused PatentsView assignee: 17 CPC subclasses with 63.6% of grants classified under C10M (Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition). Peak complete grant year is 2017 (9 grants) versus a trough of 1 in 2021. By volume, SK sits between Shaw & Sons, Inc. and SMS Meer GMBH.

SK's three-year grant acceleration

SK Lubricants Co., Ltd. shows 5 grants in 2022–2024 against only 5 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.

Shaw & Sons

22
Shunsin Technolog…

22
Siang Syuan FU En…

22
Signify North Ame…

22
Smart

22
Smartlabs

22
Smiths Heimann

22
SMS Meer

22
SK Lubricants ◀

22

What this shows SK holds 22 patents at rank #13,672, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SK

By rank, the assignees closest to #13,672 in granted patent volume.

Leaders in C10M (Lubricating Compositions)

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

SK's Innovation Score vs. every tracked assignee

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

38 Top 41% higher than 59% 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 · 2017–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

SK Lubricants Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	9	40.9%
2018	3	13.6%
2019	2	9.1%
2020	2	9.1%
2021	1	4.5%
2022	5	22.7%

Which technologies does SK Lubricants Co., Ltd. patent most?

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 14

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 14

C07C - Acyclic OR Carbocyclic Compounds 9

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 8

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 5

C11C - Fatty Acids From Fats, Oils OR WAXES; CANDLES; Fats, Oils OR Fatty Acids BY Chemical Modification OF Fats, Oils, OR Fatty Acids Obtained Therefrom 4

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 3

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 2

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

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

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

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 1

Top 15 of 17 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

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

SK Lubricants Co., Ltd.'s lead technology class is C10M (Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition), 63.6% of its portfolio - see every assignee active in that class. Explore C10M
Ranked #13,690 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare SK Lubricants Co., Ltd. against Shaw & Sons, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.2/100 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.