Where does Acal Energy, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Acal Energy, Ltd. ranks #34,052 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 Acal Energy, Ltd. hold?

Acal Energy, Ltd. holds 7 US utility patents granted between 2015 and 2016, spanning 6 technology areas.

What is Acal Energy, Ltd.'s Innovation Score?

Acal Energy, Ltd. has an Innovation Score of 30.8 out of 100 (36th 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 Acal Energy, Ltd. focus on?

Acal Energy, Ltd.'s top technology area is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy) with 7 patents, ranking #684 of 2,332 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

Is Acal Energy, Ltd.'s patent grant rate increasing or decreasing?

Acal Energy, Ltd.'s recent grant velocity is -100% 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 Acal Energy, Ltd.'s patents?

Acal Energy, Ltd.'s patents average 31.3 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 Acal Energy, 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

Acal Energy, Ltd.

USPTO PatentsView assignee record - 7 granted patents across 6 technology areas, recorded in grant years 2015–2016. 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: H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Acal ranks #34,052 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 6 technology areas.

#34,052
of 49,997 US assignees by volume: 36th percentile
by Innovation Score (30.8/100): 31.3
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34052 · Foreign Corporation #34,052 · 7 grants

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

GRANTS-MICRO 7 grants
MID-PACK #34,052/49,997
PHOTO-FINISH ABC Group
CPC-NARROW H01M · 6 areas
INNOV-THIN 30.8/100
CLAIMS-DENSE 31.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: ABC Group 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 Acal’s 30.8 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 7.2 pts (23%) Velocity 0.0 pts (0%) Breadth 8.7 pts (28%) Claim depth 15.0 pts (49%)

Qualcomm Incorporated · highest

85
Acal Energy · this assignee

31
3D Lighting… · lowest

7

What this shows Acal's Innovation Score is 30.8/100 (36th 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 Acal?

Each dot is one of Acal’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). Acal’s own 31.3 claims/patent is ABOVE the 17.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Acal's grants concentrate

Acal Energy, Ltd. is a focused PatentsView assignee: 6 CPC subclasses with 100% of grants classified under H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy). Peak complete grant year is 2015 (5 grants) versus a trough of 2 in 2016. By volume, Acal sits between ABC Group Inc. and Accurpress America Inc..

ABC Group

7
Abiogen Pharma SPA

7
ABL Research Group

7
Abon Pharmaceutic…

7
Accelovant

7
Accor Technology

7
Accumedical Beiji…

7
Accurpress America

7
Acal Energy ◀

7

What this shows Acal holds 7 patents at rank #34,049, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Acal

By rank, the assignees closest to #34,049 in granted patent volume.

Leaders in H01M (Processes OR Means)

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

Acal's Innovation Score vs. every tracked assignee

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

31 36th percentile higher than 36% 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 · 2015–2016

Grants by year

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

View data table

Acal Energy, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	71.4%
2016	2	28.6%

Which technologies does Acal Energy, Ltd. patent most?

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 7

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 7

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 1

Y10T - Technical Subjects Covered BY Former US Classification 1

C07D - Heterocyclic Compounds 1

Top 6 of 6 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

Acal Energy, Ltd.'s patent record in context - here's where to go next.

Acal Energy, Ltd.'s lead technology class is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy), 100% of its portfolio - see every assignee active in that class. Explore H01M
Ranked #34,052 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Acal Energy, Ltd. against ABC Group Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.8/100 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.