|
Class Definition for Class 438 - SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS (4241 words) |
 | The unit coating operations in Class 438 may be viewed as a specie of a Class 427 process which was removed intact from Class 427 and transferred to Class 438 for the convenience of the searcher. |
| The unit etching operations in Class 438 may be viewed as a specie of a Class 216 process which was removed intact from Class 216 and transferred to Class 438 for the convenience of the searcher. |
| Class 438 takes the mounting or packaging operation of semiconductor devices when glass melting, glass shaping, glass forming, or glass heat treating is combined with any coating, adhesive bonding, metal casting, metal working, or deforming, metal fusion bonding or other chemical manufacturing operation. |
Feeds |
Contact