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

According to USPTO PatentsView (2015–2025 granted utility patents), Kantatsu Co., Ltd ranks #1,604 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 Kantatsu Co., Ltd hold?

Kantatsu Co., Ltd holds 258 US utility patents granted between 2015 and 2021, spanning 10 technology areas.

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

Kantatsu Co., Ltd has an Innovation Score of 39.7 out of 100 (top 38% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Kantatsu Co., Ltd's top technology area is G02B (Optical Elements, Systems OR Apparatus) with 232 patents, ranking #66 of 4,891 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

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

Kantatsu Co., Ltd's recent grant velocity is -39% 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 Kantatsu Co., Ltd's patents?

Kantatsu 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 Kantatsu 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

Kantatsu Co., Ltd

USPTO PatentsView assignee record - 258 granted patents across 10 technology areas, recorded in grant years 2015–2021. 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: G02B (Optical Elements, Systems OR Apparatus).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kantatsu ranks #1,604 of 49,997 tracked US assignees by granted-patent volume, with 258 patents across 10 technology areas.

#1,604
of 49,997 US assignees by volume: Top 38%
by Innovation Score (39.7/100): 15.5
avg claims per patent: -39%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1604 · Foreign Corporation #1,604 · 258 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MID 258 grants
TOP-DECILE #1,604/49,997
PHOTO-FINISH Box
CPC-FOCUS G02B · 10 areas
INNOV-THIN 39.7/100
CLAIMS-RICH 15.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -39% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Box, 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 Kantatsu’s 39.7 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 19.2 pts (48%) Velocity 0.0 pts (0%) Breadth 11.2 pts (28%) Claim depth 9.3 pts (23%)

Qualcomm Incorporated · highest

85
Hunter's Manufacturing · near

40
Kantatsu · this assignee

40
Lumosa Therapeutics · near

40
Optis Cellular… · near

40
Smart Denture… · near

40
3D Lighting… · lowest

7

What this shows Kantatsu's Innovation Score is 39.7/100 (top 38% 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 Kantatsu?

Each dot is one of Kantatsu’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). Kantatsu’s own 15.5 claims/patent is at or below the 16.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Kantatsu's grants concentrate

Kantatsu Co., Ltd is a focused PatentsView assignee: 10 CPC subclasses with 89.9% of grants classified under G02B (Optical Elements, Systems OR Apparatus). Peak complete grant year is 2020 (68 grants) versus a trough of 21 in 2018. By volume, Kantatsu sits between Box, Inc. and Horiba, Ltd..

Box

258
CSC Holdings

258
GE Healthcare Bio…

258
H Lundbeck A/S

258
Turner Broadcasti…

258
Kantatsu ◀

258
AAC Acoustic (She…

257
Flir Systems

257
Horiba

257

What this shows Kantatsu holds 258 patents at rank #1,604, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kantatsu

By rank, the assignees closest to #1,604 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kantatsu, neither rank-band nor same-CPC leaders (those blocks stay above). In G02B (Optical Elements), Kantatsu ranks #66 of 4,891 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (40 here).

Hunter's Manufacturing Company, Inc. 40 Optis Cellular Technology, LLC 40 Lumosa Therapeutics Co., Ltd 40 Smart Denture Conversions, LLC 40

Similar claim depth

Nearest assignees by average claims per patent (15.5 here).

HeartWare, Inc. 15.5 avg Bell Textron Inc. 15.5 avg Silicon Storage Technology, Inc. 15.5 avg THE Chemours Company FC, LLC 15.5 avg

Kantatsu's Innovation Score vs. every tracked assignee

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

40 Top 38% higher than 62% 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 · 2015–2021

Grants by year

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

View data table

Kantatsu Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	25	9.7%
2016	31	12.0%
2017	44	17.1%
2018	21	8.1%
2019	39	15.1%
2020	68	26.4%
2021	30	11.6%

Which technologies does Kantatsu Co., Ltd patent most?

G02B - Optical Elements, Systems OR Apparatus 232

H04N - Pictorial Communication, e.g. Television 7

G09G - Arrangements OR Circuits FOR Control OF Indicating Devices Using Static Means TO Present Variable Information 5

G06T - Image Data Processing OR Generation, IN General 5

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 3

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 3

B29D - Producing Particular Articles From Plastics OR From Substances IN A Plastic State 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

B33Y - Additive Manufacturing, i.e. Manufacturing OF Three-dimensional [3-D] Objects BY Additive Deposition, Additive Agglomeration OR Additive Layering, e.g. BY 3-D Printing, Stereolithography OR Selective Laser Sintering 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 10 of 10 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

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

Kantatsu Co., Ltd's lead technology class is G02B (Optical Elements, Systems OR Apparatus), 89.9% of its portfolio - see every assignee active in that class. Explore G02B
Ranked #1,604 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kantatsu Co., Ltd against Box, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.7/100 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.