How many patents does Yamaguchi Yoshiki have in patentsdb?

Yamaguchi Yoshiki is linked to 93 publications as assignee in our database.

What technology areas does Yamaguchi Yoshiki patent most?

Top mapped technology areas by patent count: Physics (92); Operations & Transport (3); Chemistry & Metallurgy (1).

In our data, assignee counts were 6 in 2024 and 4 in 2025 (lower year over year).

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

Yamaguchi Yoshiki holds 93 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
Physics	92
Operations & Transport	3
Chemistry & Metallurgy	1
Mechanical Engineering	1
Cross-Sectional Technologies	1

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

How many patents does Yamaguchi Yoshiki have in patentsdb?: Yamaguchi Yoshiki is linked to 93 publications as assignee in our database.
What technology areas does Yamaguchi Yoshiki patent most?: Top mapped technology areas by patent count: Physics (92); Operations & Transport (3); Chemistry & Metallurgy (1).
Is Yamaguchi Yoshiki's patent activity growing?: In our data, assignee counts were 6 in 2024 and 4 in 2025 (lower year over year).
What are recent patents assigned to Yamaguchi Yoshiki?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.