How many patents does Rinnai Kk have in patentsdb?

Rinnai Kk is linked to 283 publications as assignee in our database.

What technology areas does Rinnai Kk patent most?

Top mapped technology areas by patent count: Mechanical Engineering (270); Cross-Sectional Technologies (62); Operations & Transport (22).

In our data, assignee counts were 21 in 2024 and 16 in 2025 (lower year over year).

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

Rinnai Kk holds 283 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	270
Cross-Sectional Technologies	62
Operations & Transport	22
Physics	19
Chemistry & Metallurgy	5
Human Necessities	5
Electricity	4
Fixed Constructions	3

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

How many patents does Rinnai Kk have in patentsdb?: Rinnai Kk is linked to 283 publications as assignee in our database.
What technology areas does Rinnai Kk patent most?: Top mapped technology areas by patent count: Mechanical Engineering (270); Cross-Sectional Technologies (62); Operations & Transport (22).
Is Rinnai Kk's patent activity growing?: In our data, assignee counts were 21 in 2024 and 16 in 2025 (lower year over year).
What are recent patents assigned to Rinnai Kk?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.