How many patents does Roi Optoelectronics Tech Co Ltd have in patentsdb?

Roi Optoelectronics Tech Co Ltd is linked to 61 publications as assignee in our database.

What technology areas does Roi Optoelectronics Tech Co Ltd patent most?

Top mapped technology areas by patent count: Physics (27); Chemistry & Metallurgy (22); Electricity (21).

In our data, assignee counts were 13 in 2024 and 13 in 2025 (similar year over year).

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

Roi Optoelectronics Tech Co Ltd holds 61 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 growing.

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
Physics	27
Chemistry & Metallurgy	22
Electricity	21
Operations & Transport	17
Human Necessities	4
Cross-Sectional Technologies	3
Textiles & Paper	2
Mechanical Engineering	1

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

How many patents does Roi Optoelectronics Tech Co Ltd have in patentsdb?: Roi Optoelectronics Tech Co Ltd is linked to 61 publications as assignee in our database.
What technology areas does Roi Optoelectronics Tech Co Ltd patent most?: Top mapped technology areas by patent count: Physics (27); Chemistry & Metallurgy (22); Electricity (21).
Is Roi Optoelectronics Tech Co Ltd's patent activity growing?: In our data, assignee counts were 13 in 2024 and 13 in 2025 (similar year over year).
What are recent patents assigned to Roi Optoelectronics Tech Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.