How many patents does Hitachi Zosen Corp have in patentsdb?

Hitachi Zosen Corp is linked to 74 publications as assignee in our database.

What technology areas does Hitachi Zosen Corp patent most?

Top mapped technology areas by patent count: Cross-Sectional Technologies (42); Operations & Transport (26); Electricity (26).

In our data, assignee counts were 13 in 2024 and 3 in 2025 (lower year over year).

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

Hitachi Zosen Corp holds 74 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.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Cross-Sectional Technologies	42
Operations & Transport	26
Electricity	26
Chemistry & Metallurgy	25
Physics	20
Mechanical Engineering	6
Fixed Constructions	3
Textiles & Paper	3

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

How many patents does Hitachi Zosen Corp have in patentsdb?: Hitachi Zosen Corp is linked to 74 publications as assignee in our database.
What technology areas does Hitachi Zosen Corp patent most?: Top mapped technology areas by patent count: Cross-Sectional Technologies (42); Operations & Transport (26); Electricity (26).
Is Hitachi Zosen Corp's patent activity growing?: In our data, assignee counts were 13 in 2024 and 3 in 2025 (lower year over year).
What are recent patents assigned to Hitachi Zosen Corp?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.