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

According to USPTO PatentsView (2015–2025 granted utility patents), Napra Co., Ltd. ranks #11,743 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 Napra Co., Ltd. hold?

Napra Co., Ltd. holds 26 US utility patents granted between 2015 and 2024, spanning 17 technology areas.

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

Napra Co., Ltd. has an Innovation Score of 34.3 out of 100 (47th 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 Napra Co., Ltd. focus on?

Napra Co., Ltd.'s top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 20 patents, ranking #608 of 3,373 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

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

Napra Co., Ltd.'s recent grant velocity is -70% 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 Napra Co., Ltd.'s patents?

Napra Co., Ltd.'s patents average 5.1 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 Napra 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

Napra Co., Ltd.

USPTO PatentsView assignee record - 26 granted patents across 17 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Napra ranks #11,743 of 49,997 tracked US assignees by granted-patent volume, with 26 patents across 17 technology areas.

#11,743
of 49,997 US assignees by volume: 47th percentile
by Innovation Score (34.3/100): 5.1
avg claims per patent: -70%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11743 · Foreign Corporation #11,743 · 26 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 26 grants
UPPER-Q #11,743/49,997
PHOTO-FINISH Nanocomp
CPC-FOCUS H01L · 17 areas
INNOV-THIN 34.3/100
CLAIMS-SPARSE 5.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -70% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nanocomp Technologies 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 Napra’s 34.3 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 11.4 pts (33%) Velocity 5.3 pts (15%) Breadth 14.6 pts (43%) Claim depth 3.0 pts (9%)

Qualcomm Incorporated · highest

85
Otsuka · near

34
Revotek · near

34
Napra · this assignee

34
Shima Seiki MFG · near

34
Rovio Entertainment · near

34
3D Lighting… · lowest

7

What this shows Napra's Innovation Score is 34.3/100 (47th 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 Napra?

Each dot is one of Napra’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). Napra’s own 5.1 claims/patent is at or below the 14.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Napra's grants concentrate

Napra Co., Ltd. is a focused PatentsView assignee: 17 CPC subclasses with 76.9% of grants classified under H01L (Semiconductor Devices NOT Covered BY Class H10). Peak complete grant year is 2016 (6 grants) versus a trough of 1 in 2020. By volume, Napra sits between NS Solutions Corporation and Northern Digital Inc..

Napra's three-year grant acceleration

Napra Co., Ltd. shows 4 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.

NS Solutions

26
Michel VAN DE Wie…

26
Nypro

26
Nanocomp

26
Nation Wide Produ…

26
New Pig

26
Norgren Automatio…

26
Northern Digital

26
Napra ◀

26

What this shows Napra holds 26 patents at rank #11,750, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Napra

By rank, the assignees closest to #11,750 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Napra, neither rank-band nor same-CPC leaders (those blocks stay above). In H01L (Semiconductor Devices NOT Covered BY Class H10), Napra ranks #608 of 3,373 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (34 here).

Shima Seiki MFG., Ltd. 34 Rovio Entertainment Ltd 34 Revotek Co., Ltd 34 Otsuka Electronics Co., Ltd. 34

Napra's Innovation Score vs. every tracked assignee

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

34 47th percentile higher than 47% 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

Napra Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	7.7%
2016	6	23.1%
2017	5	19.2%
2018	4	15.4%
2019	3	11.5%
2020	1	3.8%
2021	1	3.8%
2022	3	11.5%
2024	1	3.8%

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

H01L - Semiconductor Devices NOT Covered BY Class H10 20

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 10

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 8

C22C - Alloys 8

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 7

Y10T - Technical Subjects Covered BY Former US Classification 3

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

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

H10D - Inorganic Electric Semiconductor Devices 2

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 1

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

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 1

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 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

B81C - Processes OR Apparatus Specially Adapted FOR THE Manufacture OR Treatment OF Microstructural Devices OR Systems 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

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

Napra Co., Ltd.'s lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 76.9% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #11,743 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Napra Co., Ltd. against NS Solutions Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.3/100 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.