How many patents does Hitachi Systems Ltd have in patentsdb?

Hitachi Systems Ltd is linked to 84 publications as assignee in our database.

What technology areas does Hitachi Systems Ltd patent most?

Top mapped technology areas by patent count: Physics (67); Electricity (39); Operations & Transport (13).

In our data, assignee counts were 8 in 2024 and 1 in 2025 (lower year over year).

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

Hitachi Systems Ltd holds 84 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
Physics	67
Electricity	39
Operations & Transport	13
Cross-Sectional Technologies	13
Mechanical Engineering	6
Human Necessities	3
Fixed Constructions	2
Chemistry & Metallurgy	1

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

How many patents does Hitachi Systems Ltd have in patentsdb?: Hitachi Systems Ltd is linked to 84 publications as assignee in our database.
What technology areas does Hitachi Systems Ltd patent most?: Top mapped technology areas by patent count: Physics (67); Electricity (39); Operations & Transport (13).
Is Hitachi Systems Ltd's patent activity growing?: In our data, assignee counts were 8 in 2024 and 1 in 2025 (lower year over year).
What are recent patents assigned to Hitachi Systems Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.