Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
EC

Edward Chang — 3 Patents

ATAT&T: 1 patents #10,636 of 18,772Top 60%
Hackettstown, NJ: #286 of 793 inventorsTop 40%
New Jersey: #23,671 of 69,400 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Edward Chang has been granted 3 US patents while listed as an inventor at AT&T. The first was granted in 1995 and the most recent in July 2021. Edward Chang ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Edward Chang in Hackettstown, NJ, US.

Patents per Year

Patents granted per year, 1995 to 2021Bar chart with a peak of 1 patents in 1995.peak 11995: 1 patents19952013: 1 patents20132021: 1 patents2021

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D925165 Protective sleeve 2021-07-20
8408242 Overflow shutoff valve 2013-04-02
5392336 Data message storage and pick up service Nadine K. Grasty, Alok Gupta, Bruce McNair, Alan Ira Schwartz 1995-02-21