How many patents does Hangzhou Sanhua Res Inst Co Ltd have in patentsdb?

Hangzhou Sanhua Res Inst Co Ltd is linked to 209 publications as assignee in our database.

What technology areas does Hangzhou Sanhua Res Inst Co Ltd patent most?

Top mapped technology areas by patent count: Mechanical Engineering (171); Operations & Transport (78); Cross-Sectional Technologies (51).

In our data, assignee counts were 18 in 2024 and 15 in 2025 (lower year over year).

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

Hangzhou Sanhua Res Inst Co Ltd holds 209 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.

Most common classification codes in this portfolio.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Mechanical Engineering	171
Operations & Transport	78
Cross-Sectional Technologies	51
Electricity	46
Physics	20
Chemistry & Metallurgy	10
Textiles & Paper	4
Human Necessities	1

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

How many patents does Hangzhou Sanhua Res Inst Co Ltd have in patentsdb?: Hangzhou Sanhua Res Inst Co Ltd is linked to 209 publications as assignee in our database.
What technology areas does Hangzhou Sanhua Res Inst Co Ltd patent most?: Top mapped technology areas by patent count: Mechanical Engineering (171); Operations & Transport (78); Cross-Sectional Technologies (51).
Is Hangzhou Sanhua Res Inst Co Ltd's patent activity growing?: In our data, assignee counts were 18 in 2024 and 15 in 2025 (lower year over year).
What are recent patents assigned to Hangzhou Sanhua Res Inst Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.