USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Rio Tinto Alcan International Limited

USPTO PatentsView assignee record - 36 granted patents across 28 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C25C (PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

20.8

Avg claims per patent

-50%

5-year filing velocity

The verdict

Rio holds 36 US patents across 28 technology areas, rank #8,906 of 50,000 tracked assignees.

#8,906
of 50,000 US assignees by volume: Top 23%
by Innovation Score (45.4/100): 20.8
avg claims per patent: -50%
filing velocity, last 5 yrs

Portfolio overview

Rio Tinto Alcan International Limited has been granted 36 US utility patents between 2015 and 2025, placing Rio Tinto Alcan International Limited at rank #8,906 across all assignees tracked by PlainPatent. This portfolio spans 28 distinct Cooperative Patent Classification (CPC) subclasses, averaging 20.8 claims per patent with primary concentration in C25C (PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR). As a Foreign Corporation, Rio Tinto Alcan International Limited is one of the more focused assignees in the PatentsView dataset. By volume, Rio sits between Rayvio Corporation (36 patents, rank #8,902) and Rosalind Franklin University Of Medicine And Science (36 patents, rank #8,910) - the closest US assignees by grant volume. The composite Innovation Score of 45.4/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 12 grants, compared with 24 in the 2015–2019 window, a -50% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Rio Tinto Alcan International Limited's 20.8 average claims per patent reflects complex, broadly scoped inventions that are difficult for competitors to design around, while a multi-domain presence across 28 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Rio Tinto Alcan International Limited against peers pursuing similar technology classes.

Rayvio

36
Raynergy Tek Inco…

36
Renmatix

36
Revolution Medici…

36
Roadtec

36
Rockler Companies

36
Rockstar Consorti…

36
Rosalind Franklin…

36
Rio Tinto Alcan I… ◀

36

What this shows Rio holds 36 patents at rank #8,906, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Rio

By rank, the assignees closest to #8,906 in granted patent volume.

Leaders in C25C (Processes FOR THE Electrolytic Production)

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

Rio's Innovation Score vs. every tracked assignee

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

45 Top 23% higher than 77% of 50,000 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 · 2015–2025

Grants by year

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

View data table

Rio Tinto Alcan International Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	11.1%
2016	1	2.8%
2017	4	11.1%
2018	6	16.7%
2019	9	25.0%
2020	5	13.9%
2021	2	5.6%
2022	1	2.8%
2024	3	8.3%
2025	1	2.8%

Which technologies does Rio Tinto Alcan International Limited patent most?

C25C - PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR 13

C22C - ALLOYS 11

C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS 8

C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 6

B01D - SEPARATION 4

B22D - CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 3

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 3

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 2

B21C - MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL 2

B30B - PRESSES IN GENERAL 2

C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 2

C22B - PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS 2

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 1

H01H - ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 1

B66C - CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES 1

Top 15 of 28 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Complex

Velocity Declining

Where it ranks

Overall rank by patents

#8,906

Across all tracked assignees

Innovation Score

45.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Rio Tinto Alcan International Limited hold?

Rio Tinto Alcan International Limited holds 36 US granted patents filed between 2015 and 2025, spanning 28 technology areas.

What is Rio Tinto Alcan International Limited's Innovation Score?

Rio Tinto Alcan International Limited has an Innovation Score of 45.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Rio Tinto Alcan International Limited focus on?

Rio Tinto Alcan International Limited's top technology area is C25C (PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR) with 13 patents. The company has filed patents in 28 CPC subclasses total.

Is Rio Tinto Alcan International Limited's patent filing rate increasing or decreasing?

Rio Tinto Alcan International Limited's recent filing velocity is -50% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Rio Tinto Alcan International Limited's patents?

Rio Tinto Alcan International Limited's patents average 20.8 claims each. This indicates complex, broadly scoped patents that are harder for competitors to design around.

How is the Rio Tinto Alcan International Limited 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.

How to use this portfolio

Rio's 36 grants land it in the top 23% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Rio ranks #8,906 of 50,000. Top 50 holders
Most of this portfolio concentrates in C25C - see who else leads that technology area. C25C leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.