How many patents does Hitachi Construction Mach Co have in patentsdb?

Hitachi Construction Mach Co is linked to 1,392 publications as assignee in our database.

What technology areas does Hitachi Construction Mach Co patent most?

Top mapped technology areas by patent count: Fixed Constructions (1,108); Operations & Transport (652); Mechanical Engineering (627).

In our data, assignee counts were 154 in 2024 and 137 in 2025 (lower year over year).

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

Hitachi Construction Mach Co holds 1,392 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 stable.

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
Fixed Constructions	1,108
Operations & Transport	652
Mechanical Engineering	627
Physics	408
Cross-Sectional Technologies	221
Electricity	171
Chemistry & Metallurgy	7
Human Necessities	4

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

How many patents does Hitachi Construction Mach Co have in patentsdb?: Hitachi Construction Mach Co is linked to 1,392 publications as assignee in our database.
What technology areas does Hitachi Construction Mach Co patent most?: Top mapped technology areas by patent count: Fixed Constructions (1,108); Operations & Transport (652); Mechanical Engineering (627).
Is Hitachi Construction Mach Co's patent activity growing?: In our data, assignee counts were 154 in 2024 and 137 in 2025 (lower year over year).
What are recent patents assigned to Hitachi Construction Mach Co?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.