How many patents does Qingdao Haier Drum Washing Machine Co Ltd have in patentsdb?

Qingdao Haier Drum Washing Machine Co Ltd is linked to 223 publications as assignee in our database.

What technology areas does Qingdao Haier Drum Washing Machine Co Ltd patent most?

Top mapped technology areas by patent count: Textiles & Paper (218); Mechanical Engineering (27); Cross-Sectional Technologies (24).

In our data, assignee counts were 15 in 2024 and 7 in 2025 (lower year over year).

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

Qingdao Haier Drum Washing Machine Co Ltd holds 223 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 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
Textiles & Paper	218
Mechanical Engineering	27
Cross-Sectional Technologies	24
Electricity	14
Fixed Constructions	12
Physics	12
Operations & Transport	11
Human Necessities	11
Chemistry & Metallurgy	1

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

How many patents does Qingdao Haier Drum Washing Machine Co Ltd have in patentsdb?: Qingdao Haier Drum Washing Machine Co Ltd is linked to 223 publications as assignee in our database.
What technology areas does Qingdao Haier Drum Washing Machine Co Ltd patent most?: Top mapped technology areas by patent count: Textiles & Paper (218); Mechanical Engineering (27); Cross-Sectional Technologies (24).
Is Qingdao Haier Drum Washing Machine Co Ltd's patent activity growing?: In our data, assignee counts were 15 in 2024 and 7 in 2025 (lower year over year).
What are recent patents assigned to Qingdao Haier Drum Washing Machine Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.