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

According to USPTO PatentsView (2015–2025 granted utility patents), Sanko Co., Ltd. ranks #21,722 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 Sanko Co., Ltd. hold?

Sanko Co., Ltd. holds 13 US utility patents granted between 2015 and 2024, spanning 12 technology areas.

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

Sanko Co., Ltd. has an Innovation Score of 29.6 out of 100 (31st percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Sanko Co., Ltd.'s top technology area is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients) with 4 patents, ranking #641 of 1,963 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

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

Sanko Co., Ltd.'s recent grant velocity is -56% 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 Sanko Co., Ltd.'s patents?

Sanko Co., Ltd.'s patents average 6.2 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 Sanko 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

Sanko Co., Ltd.

USPTO PatentsView assignee record - 13 granted patents across 12 technology areas, recorded in grant years 2015–2024. 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: C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sanko ranks #21,722 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 12 technology areas.

#21,722
of 49,997 US assignees by volume: 31st percentile
by Innovation Score (29.6/100): 6.2
avg claims per patent: -56%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21722 · Foreign Corporation #21,722 · 13 grants

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

GRANTS-MICRO 13 grants
MID-PACK #21,722/49,997
PHOTO-FINISH RowBot Systems
CPC-FOCUS C08K · 12 areas
INNOV-THIN 29.6/100
CLAIMS-SPARSE 6.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -56% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: RowBot Systems 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 Sanko’s 29.6 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 9.1 pts (31%) Velocity 4.4 pts (15%) Breadth 12.2 pts (41%) Claim depth 3.7 pts (13%)

Qualcomm Incorporated · highest

85
Dedicated2Imaging · near

30
Sanko · this assignee

30
LF Centennial · near

30
Turbine Powered… · near

30
Perpetuum · near

30
3D Lighting… · lowest

7

What this shows Sanko's Innovation Score is 29.6/100 (31st percentile 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 Sanko?

Each dot is one of Sanko’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). Sanko’s own 6.2 claims/patent is at or below the 15.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sanko's grants concentrate

Sanko Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 30.8% of grants classified under C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients). Peak complete grant year is 2016 (4 grants) versus a trough of 1 in 2017. By volume, Sanko sits between RowBot Systems LLC and SEI Corporation.

Sanko's three-year grant acceleration

Sanko Co., Ltd. shows 2 grants in 2022–2024 against only 3 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.

Rowbot Systems

13
S Bravo Systems

13
Sabic SK Nexlene…

13
Saltworks

13
Screenovate

13
Sedonasys Systems

13
Segmint

13
SEI

13
Sanko ◀

13

What this shows Sanko holds 13 patents at rank #21,712, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sanko

By rank, the assignees closest to #21,712 in granted patent volume.

Leaders in C08K (Use of inorganic or non-macromolecular organic substances…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sanko, neither rank-band nor same-CPC leaders (those blocks stay above). In C08K (Use of inorganic or non-macromolecular organic substances…), Sanko ranks #641 of 1,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (30 here).

Dedicated2Imaging, LLC 30 LF Centennial Ltd. 30 Turbine Powered Technology, LLC 30 Perpetuum Ltd 30

Sanko's Innovation Score vs. every tracked assignee

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

30 31st percentile higher than 31% 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 · 2015–2024

Grants by year

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

View data table

Sanko Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	15.4%
2016	4	30.8%
2017	1	7.7%
2018	1	7.7%
2019	1	7.7%
2021	2	15.4%
2023	1	7.7%
2024	1	7.7%

Which technologies does Sanko Co., Ltd. patent most?

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 4

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 4

D01F - Chemical Features IN THE Manufacture OF Artificial Filaments, Threads, Fibres, Bristles OR RIBBONS; Apparatus Specially Adapted FOR THE Manufacture OF Carbon Filaments 3

D10B - Indexing Scheme Associated With Sublasses OF Section D, Relating TO Textiles 3

C08L - Compositions OF Macromolecular Compounds 3

B41M - Printing, Duplicating, Marking, OR Copying PROCESSES; Colour Printing, 3

D01D - Mechanical Methods OR Apparatus IN THE Manufacture OF Artificial Filaments, Threads, Fibres, Bristles OR Ribbons 2

C07C - Acyclic OR Carbocyclic Compounds 2

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 2

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 2

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

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

Top 12 of 12 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

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

Sanko Co., Ltd.'s lead technology class is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients), 30.8% of its portfolio - see every assignee active in that class. Explore C08K
Ranked #21,722 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sanko Co., Ltd. against RowBot Systems LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.6/100 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.