Where does Plessey Semiconductors Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Plessey Semiconductors Ltd ranks #19,025 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 Plessey Semiconductors Ltd hold?

Plessey Semiconductors Ltd holds 15 US utility patents granted between 2019 and 2025, spanning 5 technology areas.

What is Plessey Semiconductors Ltd's Innovation Score?

Plessey Semiconductors Ltd has an Innovation Score of 44.6 out of 100 (top 25% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Plessey Semiconductors Ltd focus on?

Plessey Semiconductors Ltd's top technology area is H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers) with 15 patents, ranking #162 of 857 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is Plessey Semiconductors Ltd's patent grant rate increasing or decreasing?

Plessey Semiconductors Ltd's recent grant velocity is +500% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Plessey Semiconductors Ltd's patents?

Plessey Semiconductors Ltd's patents average 17.5 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 Plessey Semiconductors 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

Plessey Semiconductors Ltd

USPTO PatentsView assignee record - 15 granted patents across 5 technology areas, recorded in grant years 2019–2025. 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: H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Plessey ranks #19,025 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 5 technology areas.

#19,025
of 49,997 US assignees by volume: Top 25%
by Innovation Score (44.6/100): 17.5
avg claims per patent: +500%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19025 · Foreign Corporation #19,025 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #19,025/49,997
PHOTO-FINISH PerkinElmer…
CPC-NARROW H10H · 5 areas
INNOV-PAR 44.6/100
CLAIMS-RICH 17.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +500% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: PerkinElmer Singapore PTE 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 Plessey’s 44.6 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 9.6 pts (21%) Velocity 16.7 pts (37%) Breadth 7.9 pts (18%) Claim depth 10.5 pts (23%)

Qualcomm Incorporated · highest

85
Plessey Semiconductors · this assignee

45
3D Lighting… · lowest

7

What this shows Plessey's Innovation Score is 44.6/100 (top 25% 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 Plessey?

Each dot is one of Plessey’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). Plessey’s own 17.5 claims/patent is at or below the 17.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Plessey's grants concentrate

Plessey Semiconductors Ltd is a focused PatentsView assignee: 5 CPC subclasses with 100% of grants classified under H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers). Peak complete grant year is 2024 (4 grants) versus a trough of 1 in 2019. By volume, Plessey sits between PerkinElmer Singapore PTE Ltd. and Plus Meditech Co., Ltd..

Plessey's three-year grant acceleration

Plessey Semiconductors Ltd shows 5 grants in 2022–2024 against only 2 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.

Perkinelmer Singa…

15
Peterson Manufact…

15
Pfp Industries

15
Phillips Medical

15
Pliant Therapeuti…

15
Pliops

15
Plum Laboratories

15
Plus Meditech

15
Plessey Semicondu… ◀

15

What this shows Plessey holds 15 patents at rank #19,032, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Plessey

By rank, the assignees closest to #19,032 in granted patent volume.

Leaders in H10H (Inorganic Light-emitting Semiconductor Devices Having Pot…)

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

Plessey's Innovation Score vs. every tracked assignee

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

45 Top 25% higher than 75% 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 · 2019–2025

Grants by year

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

View data table

Plessey Semiconductors Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	6.7%
2020	1	6.7%
2023	1	6.7%
2024	4	26.7%
2025partial year	8	53.3%

Which technologies does Plessey Semiconductors Ltd patent most?

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 15

H01L - Semiconductor Devices NOT Covered BY Class H10 5

G03B - Apparatus OR Arrangements FOR Taking Photographs OR FOR Projecting OR Viewing THEM; Apparatus OR Arrangements Employing Analogous Techniques Using Waves Other Than Optical WAVES; Accessories Therefor 1

H04N - Pictorial Communication, e.g. Television 1

G02F - Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optical Logic ELEMENTS; Optical ANALOGUE/DIGITAL Converters 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

Plessey Semiconductors Ltd's patent record in context - here's where to go next.

Plessey Semiconductors Ltd's lead technology class is H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers), 100% of its portfolio - see every assignee active in that class. Explore H10H
Ranked #19,025 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Plessey Semiconductors Ltd against PerkinElmer Singapore PTE Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.6/100 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.