How many patents does Liu Liyan have in patentsdb?

Liu Liyan is linked to 32 publications as assignee in our database.

What technology areas does Liu Liyan patent most?

Top mapped technology areas by patent count: Physics (30); Electricity (18).

In our data, assignee counts were 4 in 2024 and 1 in 2025 (lower year over year).

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

Liu Liyan holds 32 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
Physics	30
Electricity	18

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

How many patents does Liu Liyan have in patentsdb?: Liu Liyan is linked to 32 publications as assignee in our database.
What technology areas does Liu Liyan patent most?: Top mapped technology areas by patent count: Physics (30); Electricity (18).
Is Liu Liyan's patent activity growing?: In our data, assignee counts were 4 in 2024 and 1 in 2025 (lower year over year).
What are recent patents assigned to Liu Liyan?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.