How many patents does Nakai Hiroshi have in patentsdb?

Nakai Hiroshi is linked to 16 publications as assignee in our database.

What technology areas does Nakai Hiroshi patent most?

Top mapped technology areas by patent count: Physics (15); Cross-Sectional Technologies (2); Operations & Transport (1).

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

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

Nakai Hiroshi holds 16 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	15
Cross-Sectional Technologies	2
Operations & Transport	1
Chemistry & Metallurgy	1
Mechanical Engineering	1

Free tools are coming soon. Tell us what you want to track and we'll notify you.

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

How many patents does Nakai Hiroshi have in patentsdb?: Nakai Hiroshi is linked to 16 publications as assignee in our database.
What technology areas does Nakai Hiroshi patent most?: Top mapped technology areas by patent count: Physics (15); Cross-Sectional Technologies (2); Operations & Transport (1).
Is Nakai Hiroshi's patent activity growing?: In our data, assignee counts were 1 in 2024 and 1 in 2025 (similar year over year).
What are recent patents assigned to Nakai Hiroshi?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.