How many patents does Hitachi Koki Kk have in patentsdb?

Hitachi Koki Kk is linked to 378 publications as assignee in our database.

What technology areas does Hitachi Koki Kk patent most?

Top mapped technology areas by patent count: Operations & Transport (263); Electricity (138); Cross-Sectional Technologies (62).

In our data, assignee counts were 8 in 2021 and 1 in 2022 (lower year over year).

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

Hitachi Koki Kk holds 378 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
Operations & Transport	263
Electricity	138
Cross-Sectional Technologies	62
Mechanical Engineering	51
Human Necessities	33
Physics	11
Fixed Constructions	1
Chemistry & Metallurgy	1

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

How many patents does Hitachi Koki Kk have in patentsdb?: Hitachi Koki Kk is linked to 378 publications as assignee in our database.
What technology areas does Hitachi Koki Kk patent most?: Top mapped technology areas by patent count: Operations & Transport (263); Electricity (138); Cross-Sectional Technologies (62).
Is Hitachi Koki Kk's patent activity growing?: In our data, assignee counts were 8 in 2021 and 1 in 2022 (lower year over year).
What are recent patents assigned to Hitachi Koki Kk?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.