How many patents does Sf Diamond Co Ltd have in patentsdb?

Sf Diamond Co Ltd is linked to 5 publications as assignee in our database.

What technology areas does Sf Diamond Co Ltd patent most?

Top mapped technology areas by patent count: Operations & Transport (5); Chemistry & Metallurgy (5); Cross-Sectional Technologies (5).

In our data, assignee counts were 2 in 2024 and 3 in 2025 (higher year over year).

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

Sf Diamond Co Ltd holds 5 patents in our database, with recent filings and technology areas summarized below.

Year-over-year patent counts for this assignee.

Filing activity appears to be growing based on the most recent years.

Patents filed per year
Year	Patents
2024	2
2025	3

Browse patents by year
Year	Patents
2024	2
2025	3

Latest publications where this party is an assignee.

Representative or frequently cited publications from precomputed assignee stats.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Operations & Transport	5
Chemistry & Metallurgy	5
Cross-Sectional Technologies	5

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

How many patents does Sf Diamond Co Ltd have in patentsdb?: Sf Diamond Co Ltd is linked to 5 publications as assignee in our database.
What technology areas does Sf Diamond Co Ltd patent most?: Top mapped technology areas by patent count: Operations & Transport (5); Chemistry & Metallurgy (5); Cross-Sectional Technologies (5).
Is Sf Diamond Co Ltd's patent activity growing?: In our data, assignee counts were 2 in 2024 and 3 in 2025 (higher year over year).
What are recent patents assigned to Sf Diamond Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.