How many patents does Littelfuse Inc have in patentsdb?

Littelfuse Inc is linked to 677 publications as assignee in our database.

What technology areas does Littelfuse Inc patent most?

Top mapped technology areas by patent count: Electricity (635); Physics (108); Cross-Sectional Technologies (105).

In our data, assignee counts were 54 in 2024 and 43 in 2025 (lower year over year).

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

Littelfuse Inc holds 677 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	635
Physics	108
Cross-Sectional Technologies	105
Operations & Transport	70
Chemistry & Metallurgy	45
Mechanical Engineering	8
Fixed Constructions	4
Human Necessities	2

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

How many patents does Littelfuse Inc have in patentsdb?: Littelfuse Inc is linked to 677 publications as assignee in our database.
What technology areas does Littelfuse Inc patent most?: Top mapped technology areas by patent count: Electricity (635); Physics (108); Cross-Sectional Technologies (105).
Is Littelfuse Inc's patent activity growing?: In our data, assignee counts were 54 in 2024 and 43 in 2025 (lower year over year).
What are recent patents assigned to Littelfuse Inc?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.