Table 1.

Conditions for separate the patents into the category

Technology categoryIPC/CPCAnd contains words
Engine and powertrainF16CVEHICL+ or CAR or CARS or AUTOMOBI+ or
AUTOMOTIVE or AUTOCAR or AUTOCARS or MOTORCAR or MOTORCARS or
TRANSMISSION or ENGINE+ or TIRE or
TIRES or WHEEL+ or
HUB(W)BEARING+
F01B, F01C, F01L, F01M, F01N, F01P, F02B, F02D, F02F, F02G, F02M, F02N, F02P, F16H, B60T, F16D, B62D, B60G 
TireB60C 
Interior accessoriesB60R, B60J, B60H 
Electric vehiclesB60K, B60L 
BatteryH01MVEHICL+ or CAR or CARS or AUTOMOBI+ or
AUTOMOTIVE or AUTOCAR or AUTOCARS
or MOTORCAR or MOTORCARS or AUTO or
AUTOS or VAN or VANS or TRUCK or TRUCKS or BUS or BUSES or WAGON or
WAGONS or TRANSPORTATION or
TRAILER+ or CAB or CABS
Position control systemG08G 
MotorcyclesB62H, B62J, B62K, B62L, B62M 
Source(s): Table by authors

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