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

According to USPTO PatentsView (2015–2025 granted utility patents), Nantoh. Co., Ltd ranks #32,586 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 Nantoh. Co., Ltd hold?

Nantoh. Co., Ltd holds 8 US utility patents granted between 2015 and 2023, spanning 5 technology areas.

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

Nantoh. Co., Ltd has an Innovation Score of 23.0 out of 100 (11th 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 Nantoh. Co., Ltd focus on?

Nantoh. Co., Ltd's top technology area is A61C (DENTISTRY; Apparatus OR Methods FOR Oral OR Dental Hygiene) with 5 patents, ranking #181 of 546 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

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

Nantoh. Co., Ltd's recent grant velocity is -40% 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 Nantoh. Co., Ltd's patents?

Nantoh. Co., Ltd's patents average 8.8 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 Nantoh. 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

Nantoh. Co., Ltd

USPTO PatentsView assignee record - 8 granted patents across 5 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: A61C (DENTISTRY; Apparatus OR Methods FOR Oral OR Dental Hygiene).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nantoh. ranks #32,586 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 5 technology areas.

#32,586
of 49,997 US assignees by volume: 11th percentile
by Innovation Score (23.0/100): 8.8
avg claims per patent: -40%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R32586 · Foreign Corporation #32,586 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #32,586/49,997
PHOTO-FINISH Nanjing Semidrive…
CPC-NARROW A61C · 5 areas
INNOV-THIN 23.0/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -40% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nanjing Semidrive Technology Ltd. (±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 Nantoh.’s 23.0 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 7.6 pts (33%) Velocity 2.2 pts (10%) Breadth 7.9 pts (34%) Claim depth 5.3 pts (23%)

Qualcomm Incorporated · highest

85
Nantoh · this assignee

23
3D Lighting… · lowest

7

What this shows Nantoh.'s Innovation Score is 23.0/100 (11th 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 Nantoh.?

Each dot is one of Nantoh.’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). Nantoh.’s own 8.8 claims/patent is at or below the 11.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nantoh.'s grants concentrate

Nantoh. Co., Ltd is a focused PatentsView assignee: 5 CPC subclasses with 62.5% of grants classified under A61C (DENTISTRY; Apparatus OR Methods FOR Oral OR Dental Hygiene). Peak complete grant year is 2016 (2 grants) versus a trough of 1 in 2015. By volume, Nantoh. sits between Nanjing Semidrive Technology Ltd. and National Railroad Passenger Corporation.

Nantoh.'s three-year grant acceleration

Nantoh. Co., Ltd shows 1 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.

Nanjing Semidrive…

8
Nanjing Universit…

8
Nanobio

8
Nanoentek

8
Nari Technology

8
National Cheng Ku…

8
National Deep SEA…

8
National Railroad…

8
Nantoh ◀

8

What this shows Nantoh. holds 8 patents at rank #32,565, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nantoh

By rank, the assignees closest to #32,565 in granted patent volume.

Leaders in A61C (Dentistry)

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

Nantoh.'s Innovation Score vs. every tracked assignee

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

23 11th percentile higher than 11% 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

Nantoh. Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	12.5%
2016	2	25.0%
2017	1	12.5%
2019	1	12.5%
2020	1	12.5%
2021	1	12.5%
2023	1	12.5%

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

A61C - DENTISTRY; Apparatus OR Methods FOR Oral OR Dental Hygiene 5

A61F - Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive DEVICES; FOMENTATION; Treatment OR Protection OF Eyes OR EARS; Bandages, Dressings OR Absorbent PADS; Firs 4

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 2

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 2

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

Top 5 of 5 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

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

Nantoh. Co., Ltd's lead technology class is A61C (DENTISTRY; Apparatus OR Methods FOR Oral OR Dental Hygiene), 62.5% of its portfolio - see every assignee active in that class. Explore A61C
Ranked #32,586 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nantoh. Co., Ltd against Nanjing Semidrive Technology Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 23.0/100 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.