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Class Information
Number: 438/703
Name: Semiconductor device manufacturing: process > Chemical etching > Combined with coating step > Plural coating steps
Description: Processes having multiple material deposition steps.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
4098638 Methods for making a sloped insulator for solid state devices Jul. 4, 1978
4050979 Process for thinning silicon with special application to producing silicon on insulator Sep. 27, 1977
4039359 Method of manufacturing a flattened semiconductor device Aug. 2, 1977
4026741 Technique for preparation of stoichiometric III-V compound semiconductor surfaces May. 31, 1977
4009057 Method of manufacturing a semiconductor device Feb. 22, 1977
3971860 Method for making device for high resolution electron beam fabrication Jul. 27, 1976
3958040 Semiconductor device manufacture May. 18, 1976

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