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US 10,744,222 B2Granted
Fragrance dispenser for air filter
Assignee3M Innovative Properties Company
InventorsKannan Seshadri, Neeraj Sharma, Le'Bron K. Patterson, Jeffrey M. Imsande, Nicolas A. Echeverri, Joon Chatterjee
Life of this patent
Estimating the term…
Abstract
A fragrance dispenser for emitting fragrance into an airstream impinging on an air filter, the dispenser having a receptacle with an open end that faces toward the air filter and that has a porous diffuser layer occlusively overlying the open end of the receptacle.
Claims20
A method for emitting fragrance into an airstream impinging on an air filter, the method comprising:
- positioning a fragrance dispenser in proximity to an upstream face of an air filter so that at least one receptacle of the fragrance dispenser is proximate an airstream-receiving area of the upstream face of the air filter with a major closed end of the receptacle facing at least generally upstream and with a major open end of the receptacle facing at least generally downstream toward the upstream face of the air filter,
- wherein the fragrance dispenser comprises:
- a base comprising the at least one receptacle with a major closed end and a major open end,
- a porous diffuser layer occlusively overlying the major open end of the at least one receptacle,
- and,
- a fragrance source provided within at least a portion of the receptacle and that comprises at least one volatilizable fragrance.
3 more elements
Dependencies are inferred from the claim text.