How many patents does Pfu Ltd have in patentsdb?

Pfu Ltd is linked to 696 publications as assignee in our database.

What technology areas does Pfu Ltd patent most?

Top mapped technology areas by patent count: Electricity (369); Operations & Transport (292); Physics (245).

In our data, assignee counts were 93 in 2024 and 60 in 2025 (lower year over year).

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

Pfu Ltd holds 696 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 stable.

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	369
Operations & Transport	292
Physics	245
Mechanical Engineering	9
Cross-Sectional Technologies	7
Human Necessities	1

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

How many patents does Pfu Ltd have in patentsdb?: Pfu Ltd is linked to 696 publications as assignee in our database.
What technology areas does Pfu Ltd patent most?: Top mapped technology areas by patent count: Electricity (369); Operations & Transport (292); Physics (245).
Is Pfu Ltd's patent activity growing?: In our data, assignee counts were 93 in 2024 and 60 in 2025 (lower year over year).
What are recent patents assigned to Pfu Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.