How many patents does Keller Stefan have in patentsdb?

Keller Stefan is linked to 13 publications as assignee in our database.

What technology areas does Keller Stefan patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (7); Cross-Sectional Technologies (7); Electricity (6).

In our data, assignee counts were 1 in 2019 and 1 in 2020 (similar year over year).

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

Keller Stefan holds 13 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
Chemistry & Metallurgy	7
Cross-Sectional Technologies	7
Electricity	6
Operations & Transport	4
Physics	2
Mechanical Engineering	1

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

How many patents does Keller Stefan have in patentsdb?: Keller Stefan is linked to 13 publications as assignee in our database.
What technology areas does Keller Stefan patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (7); Cross-Sectional Technologies (7); Electricity (6).
Is Keller Stefan's patent activity growing?: In our data, assignee counts were 1 in 2019 and 1 in 2020 (similar year over year).
What are recent patents assigned to Keller Stefan?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.