Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JK

James Kulman

EDEnergy Conversion Devices: 3 patents #65 of 231Top 30%
SSSovonics Solar Systems: 2 patents #7 of 19Top 40%
Detroit, MI: #200 of 1,512 inventorsTop 15%
Michigan: #18,390 of 86,293 inventorsTop 25%
Overall (All Time): #1,064,237 of 4,157,543Top 30%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4698234 Vapor deposition of semiconductor material Stanford R. Ovshinsky, Subhendu Guha, Prem Nath, Chi C. Yang, Jeffrey P. Fournier 1987-10-06
4696758 Gas mixtures for the vapor deposition of semiconductor material Stanford R. Ovshinsky, Subhendu Guha, Prem Nath, Chi C. Yang, Jeffrey P. Fournier 1987-09-29
4637895 Gas mixtures for the vapor deposition of semiconductor material Stanford R. Ovshinsky, Subhendu Guha, Prem Nath, Chi C. Yang, Jeffrey P. Fournier 1987-01-20
4609771 Tandem junction solar cell devices incorporating improved microcrystalline p-doped semiconductor alloy material Subhendu Guha 1986-09-02
4600801 Fluorinated, p-doped microcrystalline silicon semiconductor alloy material Subhendu Guha 1986-07-15