How many patents does Hitachi Int Electric Inc have in patentsdb?

Hitachi Int Electric Inc is linked to 1,344 publications as assignee in our database.

What technology areas does Hitachi Int Electric Inc patent most?

Top mapped technology areas by patent count: Electricity (1,194); Chemistry & Metallurgy (737); Physics (218).

In our data, assignee counts were 20 in 2024 and 8 in 2025 (lower year over year).

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

Hitachi Int Electric Inc holds 1,344 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 rapidly 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	1,194
Chemistry & Metallurgy	737
Physics	218
Operations & Transport	71
Cross-Sectional Technologies	57
Mechanical Engineering	18
Human Necessities	2

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

How many patents does Hitachi Int Electric Inc have in patentsdb?: Hitachi Int Electric Inc is linked to 1,344 publications as assignee in our database.
What technology areas does Hitachi Int Electric Inc patent most?: Top mapped technology areas by patent count: Electricity (1,194); Chemistry & Metallurgy (737); Physics (218).
Is Hitachi Int Electric Inc's patent activity growing?: In our data, assignee counts were 20 in 2024 and 8 in 2025 (lower year over year).
What are recent patents assigned to Hitachi Int Electric Inc?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.