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On 18 April 2019, a patent filed by Philip Morris Products SA was published entitled ‘Shisha device for heating a substrate without combustion’.1 The patent describes a waterpipe apparatus that contains a complex electric heating element with a cartridge containing an ‘aerosol-generating substrate’.1 The design appears to interchangeably accommodate solid or liquid substrates that may or may not contain tobacco, non-tobacco plant material or nicotine salts. Two weeks later, the same group had another patent published entitled ‘Shisha consumable article’, which went into more …
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Contributors MJ wrote the fast draft. RN and AS provided comments and approved the final draft.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.