How many patents does Rio Tinto Alcan Int Ltd have in patentsdb?

Rio Tinto Alcan Int Ltd is linked to 83 publications as assignee in our database.

What technology areas does Rio Tinto Alcan Int Ltd patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (74); Operations & Transport (47); Mechanical Engineering (15).

In our data, assignee counts were 4 in 2024 and 3 in 2025 (lower year over year).

See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.

Rio Tinto Alcan Int Ltd holds 83 patents in our database, with recent filings and technology areas summarized below.

Year-over-year patent counts for this assignee.

Filing activity over the last five years is declining.

Latest publications where this party is an assignee.

Representative or frequently cited publications from precomputed assignee stats.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Chemistry & Metallurgy	74
Operations & Transport	47
Mechanical Engineering	15
Cross-Sectional Technologies	8
Human Necessities	3
Electricity	3

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Answers are generated from the same data shown on this page.

How many patents does Rio Tinto Alcan Int Ltd have in patentsdb?: Rio Tinto Alcan Int Ltd is linked to 83 publications as assignee in our database.
What technology areas does Rio Tinto Alcan Int Ltd patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (74); Operations & Transport (47); Mechanical Engineering (15).
Is Rio Tinto Alcan Int Ltd's patent activity growing?: In our data, assignee counts were 4 in 2024 and 3 in 2025 (lower year over year).
What are recent patents assigned to Rio Tinto Alcan Int Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.