How many patents does Fed Signal Corp have in patentsdb?

Fed Signal Corp is linked to 129 publications as assignee in our database.

What technology areas does Fed Signal Corp patent most?

Top mapped technology areas by patent count: Operations & Transport (78); Mechanical Engineering (54); Physics (50).

In our data, assignee counts were 4 in 2024 and 8 in 2025 (higher year over year).

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

Fed Signal Corp holds 129 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
Operations & Transport	78
Mechanical Engineering	54
Physics	50
Fixed Constructions	41
Electricity	37
Cross-Sectional Technologies	18
Human Necessities	6

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

How many patents does Fed Signal Corp have in patentsdb?: Fed Signal Corp is linked to 129 publications as assignee in our database.
What technology areas does Fed Signal Corp patent most?: Top mapped technology areas by patent count: Operations & Transport (78); Mechanical Engineering (54); Physics (50).
Is Fed Signal Corp's patent activity growing?: In our data, assignee counts were 4 in 2024 and 8 in 2025 (higher year over year).
What are recent patents assigned to Fed Signal Corp?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.