How many patents does Armstrong Charles David have in patentsdb?

Armstrong Charles David is linked to 5 publications as assignee in our database.

What technology areas does Armstrong Charles David patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (5); Fixed Constructions (3); Cross-Sectional Technologies (2).

In our data, assignee counts were 3 in 2017 and 1 in 2018 (lower year over year).

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

Armstrong Charles David holds 5 patents in our database, with recent filings and technology areas summarized below.

Year-over-year patent counts for this assignee.

Filing activity appears to be declining based on the most recent years.

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	5
Fixed Constructions	3
Cross-Sectional Technologies	2

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

How many patents does Armstrong Charles David have in patentsdb?: Armstrong Charles David is linked to 5 publications as assignee in our database.
What technology areas does Armstrong Charles David patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (5); Fixed Constructions (3); Cross-Sectional Technologies (2).
Is Armstrong Charles David's patent activity growing?: In our data, assignee counts were 3 in 2017 and 1 in 2018 (lower year over year).
What are recent patents assigned to Armstrong Charles David?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.