Where does Rio Tinto Alcan International Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Rio Tinto Alcan International Limited ranks #8,905 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 Rio Tinto Alcan International Limited hold?

Rio Tinto Alcan International Limited holds 36 US utility patents granted 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 (top 23% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Rio Tinto Alcan International Limited's recent grant velocity is -54% 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 Rio Tinto Alcan International Limited's patents?

Rio Tinto Alcan International Limited's patents average 20.8 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Rio Tinto Alcan International Limited

Q: 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. Grants appear in 28 CPC subclasses total.

USPTO PatentsView assignee record - 36 granted patents across 28 technology areas, recorded in grant years 2015–2025. 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: C25C (Processes FOR THE Electrolytic Production, Recovery OR Refining OF METALS; Apparatus Therefor).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Rio ranks #8,905 of 49,997 tracked US assignees by granted-patent volume, with 36 patents across 28 technology areas.

#8,905
of 49,997 US assignees by volume: Top 23%
by Innovation Score (45.4/100): 20.8
avg claims per patent: -54%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8905 · Foreign Corporation #8,905 · 36 grants

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

GRANTS-SMALL 36 grants
UPPER-Q #8,905/49,997
PHOTO-FINISH Raynergy Tek…
CPC-FOCUS C25C · 28 areas
INNOV-PAR 45.4/100
CLAIMS-DENSE 20.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -54% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Raynergy Tek Incorporation (±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.

Qualcomm Incorporated · highest

85
Haul Hub · near

45
Rio Tinto Alcan… · this assignee

45
Roehm · near

45
Wittenstein SE · near

45
Shenzhen TargetRx · near

45
3D Lighting… · lowest

7

What this shows Rio's Innovation Score is 45.4/100 (top 23% 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.

Where Rio's grants concentrate

Rio Tinto Alcan International Limited is a focused PatentsView assignee: 28 CPC subclasses with 36.1% of grants classified under C25C (Processes FOR THE Electrolytic Production, Recovery OR Refining OF METALS; Apparatus Therefor). Peak complete grant year is 2019 (9 grants) versus a trough of 1 in 2016. By volume, Rio sits between RayVio Corporation and Rosalind Franklin University of Medicine and Science.

Rio's three-year grant acceleration

Rio Tinto Alcan International Limited shows 4 grants in 2022–2024 against only 16 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.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Rio, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (45 here).

Roehm GmbH 45 Wittenstein SE 45 Haul Hub Inc. 45 Shenzhen TargetRx, Inc. 45

Rio's Innovation Score vs. every tracked assignee

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

45 Top 23% higher than 77% 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 · 2015–2025

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%
2025partial year	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

Where it ranks

Overall rank by patents

#8,905

of 49,997 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?

What to do with this data

Rio Tinto Alcan International Limited's patent record in context - here's where to go next.

Rio Tinto Alcan International Limited's lead technology class is C25C (Processes FOR THE Electrolytic Production, Recovery OR Refining OF METALS; Apparatus Therefor), 36.1% of its portfolio - see every assignee active in that class. Explore C25C
Ranked #8,905 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Rio Tinto Alcan International Limited against RayVio Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 45.4/100 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.