Fishing – trapping – and vermin destroying
Patent
1994-06-06
1997-01-14
Wilczewski, Mary
Fishing, trapping, and vermin destroying
437132, 437133, 437170, 437974, H01L 2120, H01L 2114, H01L 21306, H01L 21465
Patent
active
055939171
ABSTRACT:
The method is characterized by the steps consisting in: a) producing a semi-insulating or n-type substrate; b) forming a separating layer of a p.sup.+ -type doped material on the surface of said substrate; c) forming an active layer on said separating layer, the active layer including at least a bottom layer with n-type doping; d) making a set of semiconductor components by etching and metalizing said active layer; g) fixing a common support plate on the assembly made in this way, thereby holding the components together mechanically; and h) dissolving the material of the separating layer anodically and without illumination while leaving the other materials intact, thereby separating the substrate from said components without dissolving the substrate.
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Dutton Brian K.
Picogiga Societe Anonyme
Wilczewski Mary
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