How many patents does Yamada Ken Ichi have in patentsdb?

Yamada Ken Ichi is linked to 11 publications as assignee in our database.

What technology areas does Yamada Ken Ichi patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (9); Physics (9); Human Necessities (7).

In our data, assignee counts were 4 in 2023 and 1 in 2025 (lower year over year).

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

Yamada Ken Ichi holds 11 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.

Mapped technology topics for this assignee.

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

How many patents does Yamada Ken Ichi have in patentsdb?: Yamada Ken Ichi is linked to 11 publications as assignee in our database.
What technology areas does Yamada Ken Ichi patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (9); Physics (9); Human Necessities (7).
Is Yamada Ken Ichi's patent activity growing?: In our data, assignee counts were 4 in 2023 and 1 in 2025 (lower year over year).
What are recent patents assigned to Yamada Ken Ichi?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.