How many patents does Chang William H L have in patentsdb?

Chang William H L is linked to 5 publications as assignee in our database.

What technology areas does Chang William H L patent most?

Top mapped technology areas by patent count: Human Necessities (5); Physics (5); Operations & Transport (1).

In our data, assignee counts were 2 in 2017 and 2 in 2018 (similar year over year).

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

Chang William H L 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 stable based on the most recent years.

Latest publications where this party is an assignee.

Representative or frequently cited publications from precomputed assignee stats.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Human Necessities	5
Physics	5
Operations & Transport	1
Cross-Sectional Technologies	1

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

How many patents does Chang William H L have in patentsdb?: Chang William H L is linked to 5 publications as assignee in our database.
What technology areas does Chang William H L patent most?: Top mapped technology areas by patent count: Human Necessities (5); Physics (5); Operations & Transport (1).
Is Chang William H L's patent activity growing?: In our data, assignee counts were 2 in 2017 and 2 in 2018 (similar year over year).
What are recent patents assigned to Chang William H L?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.