# US 12,004,629 B2 · Diffuser of volatile liquid substances equipped with a vapor permeable membrane, activated at the time of use

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- Number: US 12,004,629 B2
- Document ID: US12004629B2
- Status: Granted
- Kind: B2
- Application number: 18/256,582
- Filed: 2021-12-13
- Published: 2023-12-07
- Granted: 2024-06-11
- Earliest claimed: 2020-12-15
- Assignees: Zobele Holding SPA
- Applicants: ZOBELE HOLDING S.p.A.
- Inventors: Stefano Deflorian; Walter Sordo
- Web page: https://patentgrep.com/patent/US12004629B2

## CPC

- A45D 37/00: Sachet pads specially adapted for liquid toiletry or cosmetic substances
- A01M 1/2055: {Holders or dispensers for solid, gelified or impregnated insecticide, e.g. volatile blocks or impregnated pads}
- A61L 9/012: characterised by being in a special form, e.g. gels, emulsions {(A61L9/048 takes precedence)}
- A61L 9/12: Apparatus, e.g. holders, therefor
- A45D 2200/1045: with one or more internal reservoirs, e.g. rupturable microcapsules
- A61L 2209/131: Semi-permeable membranes
- A61L 2209/134: Distributing means, e.g. baffles, valves, manifolds, nozzles
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A01M: CATCHING, TRAPPING OR SCARING OF ANIMALS (appliances for catching swarms or drone-catching A01K57/00; fishing A01K69/00 - {A01K99/00}; biocides, pest repellants or attractants A01N); APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)

## Abstract

Disclosed is a diffuser of a volatile liquid substance of the type including a container of the volatile liquid substance, closed by at least one membrane permeable to the vapours of the volatile liquid substance, wherein the container is at least partly flexible and contains a plurality of capsules filled with the volatile liquid substance and made of a pressure-breakable plastic material impermeable to liquid and vapour. The permeable membrane is in direct contact with the external environment.

## Claims

### Claim 1

A diffuser of a volatile liquid substance comprising a container of the volatile liquid substance, closed by at least one permeable membrane which is permeable to the vapors of said volatile liquid substance and in direct contact with the external environment, wherein said container is at least partly flexible and contains a plurality of capsules filled with said volatile liquid substance and made of a pressure-breakable plastic material impermeable to liquids and vapors, wherein said container includes an annular edge portion and a cup-shaped central portion containing said plurality of capsules, wherein the angle formed between said annular edge portion and said cup-shaped central portion of the container is between 30° and 45°, the diffuser further comprising a flat ring stably fixed to said annular edge portion of the container.

### Claim 2 (depends on 1)

The diffuser of a volatile liquid substance of claim 1, wherein said at least one permeable membrane is flat and bonded to said annular edge portion of the container on the opposite side of said flat ring.

### Claim 3 (depends on 1)

The diffuser of a volatile liquid substance of claim 1, wherein said container is made by a thermoforming process, starting from a sheet of plastic material having a thickness of between 100 and 500 μm.

### Claim 4 (depends on 1)

The diffuser of a volatile liquid substance of claim 1, wherein capsules of said plurality of capsules are spherical in shape and have a diameter between 1 and 5 mm.

### Claim 5 (depends on 1)

The diffuser of a volatile liquid substance of claim 1, wherein the overall volume of said plurality of capsules is between 20% and 80% of the internal volume of the container where said plurality of capsules are housed.

### Claim 6 (depends on 2)

The diffuser of a volatile liquid substance of claim 2, wherein said at least one permeable membrane is monolithic or microporous.

### Claim 7 (depends on 2)

The diffuser of a volatile liquid substance of claim 2, wherein the thickness of said flat ring is perceivable in a tactile manner by a user finger.

### Claim 8 (depends on 2)

The diffuser of a volatile liquid substance of claim 2, wherein said flat ring is rigid and has a self-adhesive external side, covered with a removable non-adhesive sheet, for fixing said diffuser on a support surface.