DIFF Subgroup
G02B 1/14 Protective coatings, e.g. hard coatings
Introduced: January 2015
Full Title
Full titles differ between systems:
IPC:
Optical elements characterised by the material of which they are made; Optical coatings for optical elements > Optical coatings produced by application to, or surface treatment of, optical elements > Protective coatings, e.g. hard coatings
CPC:
Optical elements characterised by the material of which they are made; Optical coatings for optical elements > Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence) > Protective coatings, e.g. hard coatings
No child classifications to compare. This is a leaf node in both IPC and CPC.