CC

Chang Y. Cha

OS Occidental Oil Shale: 15 patents #2 of 37Top 6%
CH Cha: 6 patents #1 of 2Top 50%
WI Western Research Institute: 4 patents #1 of 23Top 5%
AM Amoco: 3 patents #256 of 1,251Top 25%
SI Science Applications International: 1 patents #220 of 431Top 55%
📍 Bakersfield, CA: #5 of 840 inventorsTop 1%
🗺 California: #7,415 of 386,348 inventorsTop 2%
Overall (All Time): #51,182 of 4,157,543Top 2%
52
Patents All Time

Issued Patents All Time

Showing 51–52 of 52 patents

Patent #TitleCo-InventorsDate
4192552 Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top — 1980-03-11
4191251 Process for recovering carbonaceous values from in situ oil shale retorting — 1980-03-04