JC

Joon Ho Chang

EC Ehwa Diamond Industrial Co.: 5 patents #5 of 49Top 15%
EC Ehwa Diamond Ind. Co.: 3 patents #3 of 23Top 15%
GT General Tool: 2 patents #5 of 9Top 60%
Samsung: 2 patents #37,631 of 75,807Top 50%
📍 Seongsan-myeon, KR: #2 of 12 inventorsTop 20%
Overall (All Time): #519,174 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
7954483 Cutting segment for cutting tool and cutting tools Soo-Kwang Kim, Hee-Dong Park, Jong Ho Kim 2011-06-07
7854039 Handle assembly rotatable in all directions and cleaner having the same Hyun Ju Lee, Hwa-gyu Song, Jea Won Lee, Jeoung Kyo Jeoung, Hee-cheon You +2 more 2010-12-21
7661419 Cutting segment for diamond tool and diamond tool having the segment Soo-Kwang Kim, Hee-Dong Park, Jong Ho Kim 2010-02-16
6728414 De-blocking method and apparatus Jeong Kwon Kim, Choong-woong Lee 2004-04-27
D477207 Grinding cup See Hyung Kim 2003-07-15
6588310 Saw blade shank Chang-Hyun Lee 2003-07-08
D474954 Grinding cup See Hyung Kim 2003-05-27
6527634 Grinding wheel with segments for preventing one-sided wear Chang-Hyun Lee 2003-03-04
D466139 Core drill See Hyung Kim 2002-11-26
D463965 Grinding wheel Chang-Hyun Lee 2002-10-08