| ReturnTo Theme-Group-Choice | Onelevelup |
| 5G059 | SPARK PLUGS | |
| H01T7/00 -23/00 | ||
| H01T13/00-13/60;21/02;21/04 | AA | AA00 PURPOSES |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA10 | |
| . Improved ignition | . Improved resistance to contamination | . Improved resistance to heat | . Improved durability | . Improved resistance to overvoltage | . Improved noise prevention | . Improved safety | . Improved reduction in size and weight | . Others | ||||
| BB | BB00 PARTICULAR APPLICATIONS |
BB01 | BB02 | BB03 | BB10 | |||||||
| . Rotary | . Diesel | . Aircrafts | . Others | |||||||||
| CC | CC00 TYPES |
CC01 | CC02 | CC03 | CC04 | CC05 | CC07 | CC08 | CC09 | |||
| . Aerial discharge | . . Single-gap (drawing) | . . Multi-gap (drawing) | . . Serial-gap (drawing) | . . Composite-gap (drawing) | . Creeping discharge | . . Full-creeping discharge (drawing) | . . Semi-creeping discharge (drawing) | |||||
| CC11 | CC13 | CC15 | CC20 | |||||||||
| . Plasma discharge | . Discharge by ionization means | . Gap discharge within the insulator | . Others | |||||||||
| DD | DD00 CENTER ELECTRODES (DRAWING) |
DD01 | DD02 | DD03 | DD04 | DD05 | DD06 | DD08 | DD09 | DD10 | ||
| . Materials-limited electrodes* | . . Noble metals or alloys thereof * | . . Base metals or alloys thereof * | . . . Ni alloys | . . Nonmetals * | . . Coatings | . Electrode junction | . . Composite electrodes | . . Chip junction (drawing) | ||||
| DD11 | DD12 | DD13 | DD15 | DD16 | DD17 | DD19 | DD20 | |||||
| . . . Noble metal- or alloy- chips * | . . . Base metal- or alloy- chips * | . . . Nonmetal chips * | . Manufacturing methods of electrodes | . . Powder metallurgy | . . Integrated formation with insulators | . Dimension-limited electrodes | . . Diameter-limited electrodes | |||||
| DD21 | DD23 | DD24 | DD25 | DD27 | DD28 | DD29 | DD30 | |||||
| . . Length-limited electrodes | . Shape-limited electrodes | . . Edge surface processing (drawing) | . . Circumferential surface processing (drawing) | . With resistors | . . Resistor materials * | . . Shape-limited resistors | . . Dimension-limited resistors | |||||
| EE | EE00 GROUND ELECTRODES (DRAWING) |
EE01 | EE02 | EE03 | EE04 | EE05 | EE06 | EE08 | EE09 | EE10 | ||
| . Materials-limited electrodes * | . . Noble metals or alloys thereof * | . . Base metals or alloys thereof * | . . . Ni alloys | . . Nonmetals * | . . Coatings | . Electrode junction | . . Composite electrodes | . . Chip junction (drawing) | ||||
| EE11 | EE12 | EE13 | EE15 | EE16 | EE17 | EE19 | EE20 | |||||
| . . . Noble metal chips or noble metal alloy chips * | . . . Base metal chips or base metal alloy chips * | . . . Nonmetal chips * | . Manufacturing methods of electrodes | . . Powder metallurgy | . . Integrated formation with insulators | . Dimension-limited electrodes | . . Diameter-limited electrodes | |||||
| EE21 | EE23 | EE24 | EE25 | |||||||||
| . . Length-limited electrodes | . Shape-limited electrodes | . . Facing side processing (drawing) | . . Circumferential surface processing (drawing) | |||||||||
| FF | FF00 INSULATORS |
FF01 | FF02 | FF03 | FF04 | FF06 | FF08 | FF10 | ||||
| . Materials-limited insulators | . . Alumina (Al2O3) | . . Ferroelectrics * | . . Nonoxides * | . Shape-limited insulators | . Dimension-limited insulators | . Block construction of the insulator | ||||||
| FF12 | FF14 | FF16 | ||||||||||
| . Surface coating of the insulator | . Manufacturing methods of insulators | . With semiconductors | ||||||||||
| GG | GG00 PLUG BODIES |
GG01 | GG03 | GG05 | GG07 | GG09 | ||||||
| . Materials-limited plug bodies * | . Shape-limited plug bodies | . Dimension-limited plug bodies | . Manufacturing methods of plug bodies | . Corrosion-resistant processing of the plug | ||||||||
| JJ | JJ00 JUNCTION, CONNECTION, MOUNTING |
JJ01 | JJ02 | JJ03 | JJ04 | JJ05 | JJ06 | JJ07 | JJ09 | JJ10 | ||
| . Means of joining the center electrode to the insulator | . . Means of joining using heat-resistant materials | . . . Cement | . . . Powder | . . Means of joining by melted metal | . . Means of joining by glass sealing | . . Conductive sealing materials | . Means of joining the insulator to the plug body | . . Powder caulking | ||||
| JJ11 | JJ13 | JJ15 | JJ16 | JJ17 | JJ18 | JJ19 | JJ20 | |||||
| . . Heat caulking | . Means of joining the earth electrode to the plug body | . Means of connecting a plug to a coupler | . . Connection methods | . . . Right-angle type (drawing) | . . . Straight type (drawing) | . . Connecting members | . . . Sealing members (drawing) | |||||
| JJ21 | JJ22 | JJ23 | JJ25 | JJ26 | JJ27 | JJ28 | ||||||
| . . . Lip pieces (drawing) | . . . Clip springs (drawing) | . . . Ring-shaped protrusions (drawing) | . Means of mounting a plug body on a cylinder-head | . . By gaskets | . . By conical sheets | . . By direct fitting | ||||||
| KK | KK00 INTEGRATION OF OTHER MEMBERS |
KK01 | KK02 | KK03 | KK04 | KK06 | KK07 | KK08 | KK10 | |||
| . Pressure sensors | . . In contact with the insulator | . . Inside the plug body | . . Inside the electrode | . Optical sensors | . . In the plug body | . . Inside the electrode | . Oxygen sensors | |||||
| KK12 | KK14 | KK19 | ||||||||||
| . Temperature sensors | . Ignition coils | . With a heating means | ||||||||||
| KK21 | KK23 | KK30 | ||||||||||
| . Injection type | . With a chamber provided at the ignition part | . Others |