How many patents does Hitachi High Tech Corp have in patentsdb?

Hitachi High Tech Corp is linked to 4,884 publications as assignee in our database.

What technology areas does Hitachi High Tech Corp patent most?

Top mapped technology areas by patent count: Physics (3,124); Electricity (2,629); Operations & Transport (642).

In our data, assignee counts were 527 in 2024 and 518 in 2025 (lower year over year).

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

Hitachi High Tech Corp holds 4,884 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 growing.

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	3,124
Electricity	2,629
Operations & Transport	642
Chemistry & Metallurgy	403
Cross-Sectional Technologies	151
Mechanical Engineering	103
Human Necessities	72
Fixed Constructions	6

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

How many patents does Hitachi High Tech Corp have in patentsdb?: Hitachi High Tech Corp is linked to 4,884 publications as assignee in our database.
What technology areas does Hitachi High Tech Corp patent most?: Top mapped technology areas by patent count: Physics (3,124); Electricity (2,629); Operations & Transport (642).
Is Hitachi High Tech Corp's patent activity growing?: In our data, assignee counts were 527 in 2024 and 518 in 2025 (lower year over year).
What are recent patents assigned to Hitachi High Tech Corp?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.