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

Ho Chang — 3 Patents

IGIps Group: 1 patents #41 of 66Top 65%
Samsung: 1 patents #50,112 of 75,807Top 70%
Buk-myeon, KR: #158 of 586 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Ho Chang has been granted 3 US patents while listed as an inventor at Ips Group. The first was granted in 1998 and the most recent in November 2010. Ho Chang ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Ho Chang in Buk-myeon, KR.

Patents per Year

Patents granted per year, 1998 to 2010Bar chart with a peak of 1 patents in 1998.peak 11998: 1 patents19982005: 1 patents20052010: 1 patents2010

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7842606 Method of depositing thin film and method of manufacturing semiconductor using the same Ki Hoon Lee, Young-Hoon Park, Sahng Kyoo Lee, Tae-Wook Seo 2010-11-30
6884297 Thin film deposition reactor Young-Hoon Park, Choon Kum BAIK, Hong Lim 2005-04-26
5715851 Wafer cassette and cleaning system adopting the same Jae-Hyung Jung, Young-hwan Yun 1998-02-10