Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Tosoh › Ding Chang
DC

Ding Chang — 3 Patents

TOTosoh: 1 patents #576 of 1,042Top 60%
Belmont, CA: #725 of 1,494 inventorsTop 50%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Ding Chang has been granted 3 US patents while listed as an inventor at Tosoh. The first was granted in 1985 and the most recent in August 1992. Ding Chang ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Ding Chang in Belmont, CA, US.

Patents per Year

Patents granted per year, 1985 to 1992Bar chart with a peak of 1 patents in 1985.peak 11985: 1 patents19851988: 1 patents19881992: 1 patents1992

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5135912 Natriuretic peptides from the pituitary prohormone proopiomelanocortin Eckhart Wiedemann 1992-08-04
4721704 Potent synthetic atrial peptide analogs Jaw-Kang Chang 1988-01-26
4562175 Synthetic peptides Akira Arimura, Michael DeWitt Culler, Jaw-Kang Chang 1985-12-31

Frequent Collaborators

Jaw-Kang Chang2 shared
Akira Arimura1 shared
Eckhart Wiedemann1 shared
Michael DeWitt Culler1 shared

Nearby-Ranked Inventors

Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3