Isolation By Pn Junction Only (437/74) Patents (Class 438/FOR234)

Foreign Patent Art Collections

By diffusion from upper surface only (437/75) (Class 438/FOR235)
By up-diffusion from substrate region and down diffusion into upper surface layer (437/76) (Class 438/FOR236)
By etching and refilling with semiconductor material having diverse conductivity (437/78) (Class 438/FOR238)
Using polycrystalline region (437/79) (Class 438/FOR239)

There are no patents to show for this class.