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Patent landscapes › Home & cleaning

Is a essential oil diffuser patented?

Short answer: specific designs of a essential oil diffuser have been patented many times, but "a essential oil diffuser" as a general idea is not what is protected. What matters is the exact combination of features in your version.

What our index shows
  • 223 US and WO patent publications since 2000 have a title matching “oilaromascentfragrance diffuser” or a close variant (our index of 9.7 million patent families; one publication per family).
  • Among the 176 best keyword matches we examined, 119 were published in 2020 or later, and the earliest was published in 2000.
  • Most frequent assignees in those matches: DONGGUAN YIH TEH ELECTRIC PRODUCTS CO LTD (11), PUZHEN LIFE CO LTD (9), HSIAO MING JEN (5), SHENZHEN LANHE TECH CO LTD (4).
  • Most common patent classes (CPC subclasses): A61L (162), B05B (26), A61M (18), B60H (18).

Counts come from keyword matching on titles and abstracts, so they are indicative, not a legal count. Some matches are different products that share a word.

14 real patent publications related to a essential oil diffuser

  1. Modular aromatherapy essential oil diffuser US-12533437-B2 2026 · MAJESTIC M&A INT CO LTD
    A modular aromatherapy essential oil diffuser mainly includes a universal spray module having a first end having a universal connector for docking with a commercially available aromatherapy container, a second end having a nozzle,…
    View on Google Patents
  2. Oil-leakage prevention atomizer and essential oil diffuser US-2026027253-A1 2026 · SHENZHEN PARLEX HOUSEHOLD IND CO LTD
    Provided are a leak-proof atomizer and an aroma diffuser. The leak-proof atomizer includes a liquid storage bottle, an end base, and a guide head. The end base is connected with the liquid storage bottle, and is provided with an a…
    View on Google Patents
  3. Essential oil diffuser US-2025249139-A1 2025 · SCENTSANEE DIFFUSING INC
    An essential oil diffuser comprising a top housing and a bottom housing is disclosed. The bottom housing includes two or more vial receiving areas configured for receiving two or more vials. The two or more vials store essential o…
    View on Google Patents
  4. Aromatic or essential oil diffuser and aroma container WO-2024035267-A1 2024 · MAZUR WOJCIECH
    An aromatic or essential oil diffuser, from which the aroma is gradually released into the surroundings and which is intended for aromatising open space - air in close surroundings, for aromatising products in which it is placed o…
    View on Google Patents
  5. Completely oil-tight cartomizer, and aroma diffuser WO-2024229929-A1 2024 · SHENZHEN BOREN TECH CO LTD
    A completely oil-tight cartomizer and an aroma diffuser. The completely oil-tight cartomizer comprises: a central tube (2) for realizing intake, output or isolation of essential oil; an oil compartment (5) for storing the essentia…
    View on Google Patents
  6. Essential oil diffuser US-11203033-B2 2021 · BIO CREATIVE ENTPR
    Methods and devices for atomizing a fragrant liquid are disclosed. A reservoir receives a volume of a base liquid. One or more drops of a substance are added to the base liquid to form a volume of an aromatic liquid. A vaporizer a…
    View on Google Patents
  7. Combination salt lamp and oil diffuser US-10905787-B2 2021 · BEAR DOWN BRANDS LLC
    A combination salt lamp and aroma/essential oil diffuser includes: a housing with an outlet for mist exiting the housing and an open space, a water tank inside the housing for storing liquid having a passageway that connects to th…
    View on Google Patents
  8. Wall mountable essential oil diffuser US-10709805-B2 2020 · ALEXANDER MATTHEW AARON
    A wall mountable essential oil diffuser. The wall mountable essential oil diffuser includes a housing and a wall dock. The wall dock is configured to attach to a surface and releasably receive at least a portion of the housing. Th…
    View on Google Patents
  9. Aroma diffuser and oil supply method US-10842903-B2 2020 · SHENZHEN NEARBYEXPRESS TECH DEVELOPMENT COMPANY LIMITED
    Provided are an aroma diffusing apparatus and an oil supply method. The aroma diffusing apparatus includes a main body and an oil storage tube. The main body is provided with a liquid storage chamber which is configured to store a…
    View on Google Patents
  10. Bottle essential oil diffuser with a breathing film incorporated cap US-2019022266-A1 2019 · DONGGUAN YIH TEH ELECTRIC PRODUCTS CO LTD
    A bottle essential oil diffuser includes a bottle having a bottle mouth, an essential oil substance contained in the bottle, a cap capped on the bottle mouth of the bottle and defining therein a top opening and a breathing film co…
    View on Google Patents
  11. Essential oil diffuser US-9623137-B2 2017 · CHAO HSUAN-YU
    An essential oil diffuser comprises a main body and a power plug. The main body includes a shell, an electric circuit board, a connector shell, and an ultrasonic vibration module. Wherein, a receiving room is formed in the shell, …
    View on Google Patents
  12. Aroma diffuser with adjustable essential oil gas proportion and aroma diffusing method US-9421295-B1 2016 · PUZHEN LIFE CO LTD
    The present invention relates to an aroma diffuser with an adjustable essential oil gas proportion and an aroma diffusing method. The aroma diffuser includes a housing, an electric control element, at least two essential oil bottl…
    View on Google Patents
  13. Aroma diffuser with direct diffusion of essential oil and diffusing method thereof US-9511166-B1 2016 · PUZHEN LIFE CO LTD
    The present invention relates to an aroma diffuser with direct diffusion of essential oil, and an aroma diffusing method. The aroma diffuser comprises a base, a housing mounted on the base and an electric control element disposed …
    View on Google Patents
  14. Aroma oil diffuser WO-2011021980-A1 2011 · OXION PTE LTD
    An aroma oil diffuser adapted to distribute aroma into the surroundings in which a nozzle body comprising an upper channel and a lower channel directs the airflow from the surroundings to the aroma oil diffuser. The pressurized ai…
    View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a essential oil diffuser been patented?” but “has my combination of features been described before?” Household products tend to differ in the mechanism (how something attaches, folds, dispenses or cleans) rather than the basic idea.

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First-look landscape. Not exhaustive. Not legal advice. This page lists keyword-matched publications from a limited database; it does not say whether any product is or isn't covered by a patent, whether a patent is still in force, or whether your idea is patentable. Consult a registered patent attorney or agent.