How many patents does Dong Yang Ink Co Ltd have in patentsdb?

Dong Yang Ink Co Ltd is linked to 13 publications as assignee in our database.

What technology areas does Dong Yang Ink Co Ltd patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (13); Physics (11); Operations & Transport (10).

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.

Dong Yang Ink Co Ltd holds 13 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 declining.

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 Dong Yang Ink Co Ltd have in patentsdb?: Dong Yang Ink Co Ltd is linked to 13 publications as assignee in our database.
What technology areas does Dong Yang Ink Co Ltd patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (13); Physics (11); Operations & Transport (10).
Is Dong Yang Ink Co Ltd'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 Dong Yang Ink Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.