How many patents does Li Yan have in patentsdb?

Li Yan is linked to 64 publications as assignee in our database.

What technology areas does Li Yan patent most?

Top mapped technology areas by patent count: Electricity (26); Physics (16); Chemistry & Metallurgy (10).

In our data, assignee counts were 2 in 2024 and 2 in 2025 (similar year over year).

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

Li Yan holds 64 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.

Most common classification codes in this portfolio.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Electricity	26
Physics	16
Chemistry & Metallurgy	10
Human Necessities	7
Fixed Constructions	3
Mechanical Engineering	2
Textiles & Paper	2
Cross-Sectional Technologies	2
Operations & Transport	1

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

How many patents does Li Yan have in patentsdb?: Li Yan is linked to 64 publications as assignee in our database.
What technology areas does Li Yan patent most?: Top mapped technology areas by patent count: Electricity (26); Physics (16); Chemistry & Metallurgy (10).
Is Li Yan's patent activity growing?: In our data, assignee counts were 2 in 2024 and 2 in 2025 (similar year over year).
What are recent patents assigned to Li Yan?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.