US 12,237,650 B2
Spark plug resistance element and spark plug
Hubertus Braun, Renningen (DE); Benedikt Reinsch, Riederich (DE); Carsten Kuenzel, Tamm (DE); Corinna Vonau, Stuttgart (DE); Helene Kasjanow, Stuttgart (DE); and Stefan Nufer, Stuttgart (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 17/298,427
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 26, 2019, PCT No. PCT/EP2019/082534
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/120121, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 102018221690.8 (DE), filed on Dec. 13, 2018.
Prior Publication US 2022/0029390 A1, Jan. 27, 2022
Int. Cl. H01T 13/41 (2006.01); C03C 3/04 (2006.01); C03C 4/00 (2006.01); C03C 14/00 (2006.01)
CPC H01T 13/41 (2013.01) [C03C 3/04 (2013.01); C03C 4/00 (2013.01); C03C 14/006 (2013.01); C03C 2204/00 (2013.01); C03C 2214/16 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A spark plug resistance element, comprising:
at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15;
wherein the spark plug resistance element include x mass % ZrO2, y mass % ZnO, and z mass % SnO2, where 0<x<0.99*c, 0<y<c and 0<z<c, where c=20 to 100 mass %, relative in each case to a total mass of the spark plug resistance element, and x+y+z=c.