Where does Perpetuum Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Perpetuum Ltd ranks #29,764 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 Perpetuum Ltd hold?

Perpetuum Ltd holds 9 US utility patents granted between 2015 and 2021, spanning 10 technology areas.

What is Perpetuum Ltd's Innovation Score?

Perpetuum Ltd has an Innovation Score of 29.5 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 Perpetuum Ltd focus on?

Perpetuum Ltd's top technology area is H02K (Dynamo-electric Machines) with 7 patents, ranking #358 of 1,724 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

Is Perpetuum Ltd's patent grant rate increasing or decreasing?

Perpetuum Ltd's recent grant velocity is -71% 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 Perpetuum Ltd's patents?

Perpetuum Ltd's patents average 17.3 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 Perpetuum 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

Perpetuum Ltd

USPTO PatentsView assignee record - 9 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: H02K (Dynamo-electric Machines).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Perpetuum ranks #29,764 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 10 technology areas.

#29,764
of 49,997 US assignees by volume: 31st percentile
by Innovation Score (29.5/100): 17.3
avg claims per patent: -71%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R29764 · Foreign Corporation #29,764 · 9 grants

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

GRANTS-MICRO 9 grants
MID-PACK #29,764/49,997
PHOTO-FINISH Peak Theory
CPC-FOCUS H02K · 10 areas
INNOV-THIN 29.5/100
CLAIMS-RICH 17.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -71% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Peak Theory, 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 Perpetuum’s 29.5 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 8.0 pts (27%) Velocity 0.0 pts (0%) Breadth 11.2 pts (38%) Claim depth 10.4 pts (35%)

Qualcomm Incorporated · highest

85
LF Centennial · near

30
Turbine Powered… · near

30
Perpetuum · this assignee

30
Spritz · near

30
Topivert Pharma · near

30
3D Lighting… · lowest

7

What this shows Perpetuum's Innovation Score is 29.5/100 (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 Perpetuum?

Each dot is one of Perpetuum’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). Perpetuum’s own 17.3 claims/patent is ABOVE the 14.7 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Perpetuum's grants concentrate

Perpetuum Ltd is a focused PatentsView assignee: 10 CPC subclasses with 77.8% of grants classified under H02K (Dynamo-electric Machines). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2015. By volume, Perpetuum sits between Peak Theory, Inc. and Photo electron Soul Inc..

Peak Theory

9
Peernova

9
Perfec Cigar Solu…

9
Perfetti Van Mell…

9
Perriquest Defens…

9
Petainer Large Co…

9
Philips Lumileds…

9
Photo electron So…

9
Perpetuum ◀

9

What this shows Perpetuum holds 9 patents at rank #29,787, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Perpetuum

By rank, the assignees closest to #29,787 in granted patent volume.

Leaders in H02K (Dynamo-electric Machines)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Perpetuum, neither rank-band nor same-CPC leaders (those blocks stay above). In H02K (Dynamo-electric Machines), Perpetuum ranks #358 of 1,724 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (30 here).

Spritz, Inc. 30 Topivert Pharma Limited 30 Turbine Powered Technology, LLC 30 LF Centennial Ltd. 30

Perpetuum'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 · 2015–2021

Grants by year

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

View data table

Perpetuum Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	11.1%
2016	1	11.1%
2018	1	11.1%
2019	4	44.4%
2021	2	22.2%

Which technologies does Perpetuum Ltd patent most?

H02K - Dynamo-electric Machines 7

H02N - Electric Machines NOT Otherwise Provided FOR 4

F16F - SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration 3

B06B - Methods OR Apparatus FOR Generating OR Transmitting Mechanical Vibrations OF Infrasonic, Sonic, OR Ultrasonic Frequency, ; e.g.; FOR Performing Mechanical Work IN General 1

B61L - Guiding Railway TRAFFIC; Ensuring THE Safety OF Railway Traffic 1

Y02D - Climate Change Mitigation Technologies IN Information AND Communication Technologies [ICT], I.E. Information AND Communication Technologies Aiming AT THE Reduction OF Their OWN Energy USE 1

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

H04W - Wireless Communication Networks 1

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 1

B61D - Body Details OR Kinds OF Railway Vehicles 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

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

Perpetuum Ltd's lead technology class is H02K (Dynamo-electric Machines), 77.8% of its portfolio - see every assignee active in that class. Explore H02K
Ranked #29,764 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Perpetuum Ltd against Peak Theory, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.5/100 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.