US PATENT SUBCLASS 438 / 49
.~ Chemically responsive


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

48  DF  MAKING DEVICE OR CIRCUIT RESPONSIVE TO NONELECTRICAL SIGNAL {5}
49.~ Chemically responsive


DEFINITION

Classification: 438/49

Chemically responsive:

(under subclass 48) Process for making a semiconductor device responsive to a chemical reaction or the presence of a particular chemical or concentration thereof (e.g., pH level, etc.) in close proximity to the device.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

225, 253, and 414+ for an active solid-state device responsive to a nonelectrical signal.