Patent ID: 11937640
Assignee: PHILIP MORRIS USA INC.
Field: Other consumer goods (Other fields)
Classification: CPC A | IPC A

Claim 18:
19. An electrically heated smoking system comprising:
a housing;
an aerosol forming substrate; and
a heater configured to heat the aerosol forming substrate and form an aerosol, the heater including,
a first heating element, and
a second heating element upstream of the first heating element, the first heating element arranged at a downstream end of the aerosol forming substrate and extending a first distance only partially along a length of the aerosol forming substrate, the length of the aerosol forming substrate extending from the downstream end of the aerosol forming substrate to an upstream end of the aerosol forming substrate, wherein the first heating element and the second heating element are inserted into the aerosol forming substrate.