How many patents does Keiwa Inc have in patentsdb?

Keiwa Inc is linked to 132 publications as assignee in our database.

What technology areas does Keiwa Inc patent most?

Top mapped technology areas by patent count: Physics (120); Mechanical Engineering (46); Operations & Transport (35).

In our data, assignee counts were 28 in 2024 and 17 in 2025 (lower year over year).

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

Keiwa Inc holds 132 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 growing.

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
Physics	120
Mechanical Engineering	46
Operations & Transport	35
Chemistry & Metallurgy	13
Fixed Constructions	9
Cross-Sectional Technologies	4
Electricity	4
Human Necessities	1
Textiles & Paper	1

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

How many patents does Keiwa Inc have in patentsdb?: Keiwa Inc is linked to 132 publications as assignee in our database.
What technology areas does Keiwa Inc patent most?: Top mapped technology areas by patent count: Physics (120); Mechanical Engineering (46); Operations & Transport (35).
Is Keiwa Inc's patent activity growing?: In our data, assignee counts were 28 in 2024 and 17 in 2025 (lower year over year).
What are recent patents assigned to Keiwa Inc?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.