Patent ID: 11874245
Assignee: KOA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  C  H | IPC C  G

Claim 2:
3. The method of manufacturing a sulfidation detection sensor according to claim 1, further comprising:
a resistor forming step of forming a pair of resistors on the main surface of the large-sized substrate so as to be connected to both end portions of the sulfidation detection conductor, respectively;
an internal electrode forming step of forming a pair of internal electrodes that is connected to the pair of resistors, respectively; and
a trimming step of forming trimming grooves on the pair of resistors to adjust resistance values,
wherein each of the first protective films has an undercoat layer and an overcoat layer which cover corresponding one of the pair of resistors, and
the pair of external electrodes is formed so as to cover the pair of internal electrodes, respectively.